INCOSE IW09 Feb 2, 2009  San Francisco

INCOSE IW09 Feb 2, 2009  San Francisco
Model-Based Systems Engineering (MBSE) Challenge Modeling & Simulation Interoperability (MSI) Team Status Update [with Mechatronics Applications] Updates beyond IS08 - Phase 1 results (8/2008) - Phase 2 progress (as of 1/2009) Presenter Russell Peak - Georgia Tech Other Team Leaders Roger Burkhart, Sandy Friedenthal, Chris Paredis, Leon McGinnis v1.1 Portions are Copyright © 2009 by Georgia Tech Research Corporation, Atlanta, Georgia USA. All Rights Reserved. Permission to reproduce and distribute without changes for non-commercial purposes (including internal corporate usage) is hereby granted provided this notice and a proper citation are included.

INCOSE Model-Based Systems Engineering (MBSE) Challenge: Modeling & Simulation Interoperability (MSI) Team Status Update [with Mechatronics Applications] Abstract This presentation highlights Phase 1 results from an excavator testbed that interconnects simulation models with associated diverse system models, design models, and manufacturing models. It then focuses on work-in-process status for Phase 2, including overview of a mobile robotics testbed and a SysML-driven demonstration The overall goal is to enable advanced model-based systems engineering (MBSE) in particular and model-based X (MBX) [1] in general. Our method employs SysML as the primary technology to achieve multi-level multi-fidelity interoperability, while at the same time leveraging conventional modeling & simulation tools including mechanical CAD, factory CAD, spreadsheets, math solvers, finite element analysis (FEA), discrete event solvers, and optimization tools This work is sponsored by several organizations including Deere and Lockheed and is part of the Modeling & Simulation Interoperability Team [2] in the INCOSE MBSE Challenge (with applications to mechatronics as an example domain). [1] The X in MBX includes engineering (MBE), manufacturing (MBM), and potentially other scopes and contexts such as model-based enterprises (MBE). [2] Citation Peak RS et al. ( ) INCOSE Model-Based Systems Engineering (MBSE) Challenge: Modeling & Simulation Interoperability (MSI) Team Status Update [with Mechatronics Applications]. INCOSE Intl Workshop, San Francisco. Contact gatech.edu, Georgia Institute of Technology, Atlanta,

Collaboration Approach Primary Current Team
Deere & Co. Roger Burkhart Georgia Institute of Technology (GIT) Russell Peak, Chris Paredis, Leon McGinnis, & co. Leveraging collaborations in PSLM Center SysML Focus Area (see next slide) Lockheed Martin Sandy Friedenthal Vendor collaboration Page 3

Contents Phase 1 Overview and Results Phase 2 Progress
From August 2007 to August 2008 Phase 2 Progress From August 2008 to August 2009

Dec 2008: Final Phase 1 Overview Presentation
Simulation & Analysis Using SysML Experiences Applying SysML in an Excavator Testbed and More Abstract This talk overviews Phase 1 experiences and lessons learned from an excavator testbed that interconnects simulation models with associated diverse system models, design models, and manufacturing models. The goal is to enable advanced model-based systems engineering (MBSE) in particular and model-based X (MBX) [1] in general. Our method employs SysML as the primary technology to achieve multi-level multi-fidelity interoperability, while at the same time leveraging conventional modeling & simulation tools including mechanical CAD, factory CAD, spreadsheets, math solvers, finite element analysis (FEA), discrete event solvers, and optimization tools. This work is sponsored by several organizations including Deere and Lockheed and is part of the Modeling & Simulation Interoperability Team [2] in the INCOSE MBSE Challenge (with applications to mechatronics as an example domain). [1] The X in MBX includes engineering (MBE), manufacturing (MBM), and potentially other scopes and contexts such as model-based enterprises (MBE). [2] Citation RS Peak, CJJ Paredis, LF McGinnis, DA Zwemer ( ) Simulation & Analysis Using SysML—Experiences Applying SysML in an Excavator Testbed and More. OMG SysML Information Days, Burlingame CA. Contact Georgia Institute of Technology, Atlanta,

MBSE Challenge Team Objectives Phase 1: 2007-2008
Overall Objectives Define & demonstrate capabilities to achieve modeling & simulation interoperability (MSI) Phase 1 Scope Domain: Mechatronics Capabilities: Methodologies, tools, requirements, and practical applications MSI subset: Connecting system specification & design models with multiple engineering analysis & dynamic simulation models Test & demonstrate how SysML facilitates effective MSI Note: The MSI Team objectives to date are primarily based on projects in the GIT PSLM Center sponsored by industry and government—see backup slides. Page 6

Specific Objectives Define modeling & simulation interoperability (MSI) method Define SysML and tool requirements to support MSI Provide feedback to vendors and OMG SysML 1.1 revision task force Demonstrate MSI method with 3+ engineering analysis and dynamic simulation model types Include representative building block library: fluid power Include hybrid discrete/continuous systems described by differential algebraic equations (DAEs) Develop roadmap beyond Phase 1 Page 7

Interoperability Method Objectives

Excavator Modeling & Simulation Testbed Tool Categories View

Excavator Modeling & Simulation Testbed Interoperability Patterns View (MSI Panorama per MIM 0.1)

Contents Problem Description Technical Approach
Characteristics of Mechatronic Systems Challenge Team Objectives Technical Approach Techniques and Testbeds Deliverables & Outcomes Collaboration Approach Page 11

Deliverables & Outcomes Phase 1 (Aug 2008)
Solution and supporting models Excavator test case models, test suites, … MBSE practices used Modeling & simulation interoperability (MSI) method, … Model interchange capabilities Tests between SysML tools, CAD/CAE tools, … MBSE metrics/value See “Benefits” slide with candidate metrics MBSE findings, issues, & recommendations Issue submissions to OMG and vendors, publications, … Training material Examples, tutorials, … Plan forward (Phase 2 and beyond) Page 12

Primary Public Reporting Venues
Call for IS’07 Jun 26, 2007 in San Diego Phase 1 Status IW’08 MBSE Workshop #2 Jan 25, 2008 in Albuquerque Phase 1 Status Frontiers Workshop May 14, 2008 in Atlanta Phase 1 Status IS’08 Jun 15-19, 2008 in Utrecht Phase 1 Final Report & Archive of Models Aug 2008 [proprietary deliverable] Feb 2009 (estimate) via website [public version] Phase 2 Status IW’09, etc. Misc. various venues OMG meetings, society & vendor conferences, ... Page 13

Phase 1 Report Proprietary Deliverable: Aug 31, 2008 (v1.0)
127 pages; 137 figures; 5 tables Sanitized public version: expected ~Feb Page 14

Contents Phase 1 Overview and Results Phase 2 Progress
From August 2007 to August 2008 Phase 2 Progress From August 2008 to August 2009

Overall Objectives Refine & extend beyond Phase 1 capabilities for modeling & simulation interoperability (MSI) Phase 2 Scope [new aspects] Domains: Primary: Mechatronics (expanded excavator testbed) Secondary: Others to demo reusability Capabilities: Methodologies, tools, requirements, and practical applications (MIM v2, ...) MSI subset: Connecting system specification & design models with multiple engineering analysis Deployment: Productionizing techniques & tools to enable ubiquitous practice Advance & demo how SysML facilitates effective MSI Page 16

Specific Objectives Extend modeling & simulation interoperability method: MIM 2.0 Generalizations: graph transformations, variable topology, reusability, parametrics 2.x, trade study support, inconsistency mgt., E/MBOM extensions, method workflow, ... Specializations: software, closed-loop control, electronics, ... Interfaces to new tools: Matlab/Simulink, ECAD, Arena, ... Refine SysML and tool requirements to support MIM 2.0 Provide feedback to vendors and OMG SysML 1.2/2.x task forces Demonstrate extensions in updated testbed Define deployment plan and initiate execution Refine roadmap beyond Phase 2 Page 17

Phase 2 Work-In-Process [selected topics]
SysML parametrics and solvers SysML-Modelica interoperability Mobile robots demonstration platform

Excel interface extensions (WIP) Mathematica extensions
SysML-XaiTools Interfaces for Parametrics Solving Status Update R Peak, M Wilson, A Scott, et al Aggregate extensions Excel interface extensions (WIP) Mathematica extensions Constraint blocks with arbitrary m code Results plotting Parametric modeling with diverse submodels/solvers Matlab/Simulink support (WIP) Variable topology support M Bajaj dissertation; extending CPM Parametrics graph visualization

Enabling Executable SysML Parametrics Commercialization by InterCAX LLC in Georgia Tech VentureLab incubator program Advanced technology for graph management and solver access via web services. SysML Authoring Tools COB Solving & Browsing Plugins Prototyped by GIT (to SysML vendor tools) 1) Artisan Studio [2/06] 2) EmbeddedPlus [3/07] 3) NoMagic [12/07] Next- Generation Spreadsheet Parametrics plugin COB API XaiTools SysML Toolkit™ Execution via API messages or exchange files COB Services (constraint graph manager, including COTS solver access via web services) Composable Objects (COBs) ... XaiTools FrameWork™ Native Tools Models COTS = commercial-off-the-shelf (typically readily available) ... Ansys (FEA Solver) ... Mathematica (Math Solver) Traditional COTS or in-house solvers

Product by InterCAX LLC
Productionizing/Deploying GIT XaiTools™ Technology for Executing SysML Parametrics Vendor SysML Tool Prototype by GIT Product by InterCAX LLC Artisan Studio Yes <tbd> EmbeddedPlus E+ SysML / RSA No Magic MagicDraw ParaMagic™ (Jul 21, 2008 release) Telelogic/IBM Rhapsody/Tau Sparx Systems Enterprise Arch. n/a XMI import/export Others <tbd> [1] Full disclosure: InterCAX LLC is a spin-off company originally created to commercialize technology from RS Peak’s GIT group. GIT has licensed technology to InterCAX and has an equity stake in the company. RS Peak is one of several business partners in InterCAX. Commercialization of the SysML/composable object aspects has been fostered by the GIT VentureLab incubator program ( via an InterCAX VentureLab project initiated October 2007.

Broadly Applicable Technology Examples of Executable SysML Parametrics
Road scanning system using unmanned aerial vehicle (UAVs) Space systems orbit planning Environmentally-conscious energy systems ... Mechanical part design and analysis (FEA) Insurance claims processing and website capacity model Financial model for small businesses Banking service levels model

Satellite Tutorial Highlights: SimpleSat

Solver Access via XaiTools Web Services (XWS) S1: General Multi-Solver Setup (prototype)
Client Machines Server Machines XaiTools Web Services Rich Client Servlet Container XaiTools Client (e.g. ParaMagic) Apache Tomcat SOAP HTTP/XML Wrapped Data SOAP Servers Internet XaiTools Ansys Solver Server SysML-based COB models XaiTools Ansys Solver Server XaiTools Math. Solver Server XaiTools Solver Wrappers Web Server Web Server FEA Solvers Ansys, Patran, Abaqus, ... Internet/Intranet ... Math Solvers Engineering Service Bureau Mathematica

Solver Access via XaiTools Web Services (XWS) S2: ParaMagic-Mathematica Setup (current product = XWS 2.2) Client Machines (End Users 1...n) Server Company X XaiTools Web Services Rich Client Servlet Container ParaMagic Apache Tomcat SOAP HTTP/XML Wrapped Data Internet SOAP Server SysML-based COB models XaiTools Solver Wrappers Web Server MagicDraw SysML Tool Math Solver Mathematica Network Server Internet/Intranet network increment(s) ...

Parametric modeling with diverse submodels/solvers
Approach: Wrapping as block/constraint block Examples to date [prototype]: Matlab Ansys Arbitrary Mathematica Arbitrary Java Similar for ~any arbitrary external solver Algorithm handles same model having several diverse submodels

PhD Dissertation Defense
G.W.Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta, GA, USA Nov 3, 2008 * MRDC 4211 Knowledge Composition Methodology for Effective Analysis Problem Formulation in Simulation-based Design Manas Bajaj Georgia Tech Engineering Information Systems Lab Systems Realization Lab Addressing challenges of variable topology and analysis intent ... Copyright © by Georgia Tech Research Corporation, Atlanta, Georgia USA. All Rights Reserved.

Abstract http://smartech.gatech.edu/handle/1853/26639
In simulation-based design, a key challenge is to formulate and solve analysis problems efficiently to evaluate a large variety of design alternatives. The solution of analysis problems has benefited from advancements in commercial off-the-shelf math solvers and computational capabilities. However, the formulation of analysis problems is often a costly and laborious process. Traditional simulation templates used for representing analysis problems are typically brittle with respect to variations in artifact topology and the idealization decisions taken by analysts. These templates often require manual updates and “re-wiring” of the analysis knowledge embodied in them. This makes the use of traditional simulation templates ineffective for multi-disciplinary design and optimization problems. Based on these issues, this dissertation defines a special class of problems known as variable topology multi-body (VTMB) problems that characterizes the types of variations seen in design-analysis interoperability. This research thus primarily answers the following question: How can we improve the effectiveness of the analysis problem formulation process for VTMB problems? The knowledge composition methodology (KCM) presented in this dissertation answers this question by addressing the following research gaps: (1) the lack of formalization of the knowledge used by analysts in formulating simulation templates, and (2) the inability to leverage this knowledge to define model composition methods for formulating simulation templates. KCM overcomes these gaps by providing: (1) formal representation of analysis knowledge as modular, reusable, analyst-intelligible building blocks, (2) graph transformation-based methods to automatically compose simulation templates from these building blocks based on analyst idealization decisions, and (3) meta-models for representing advanced simulation templates—VTMB design models, analysis models, and the idealization relationships between them. Applications of the KCM to thermo-mechanical analysis of multi-stratum printed wiring boards and multi-component chip packages demonstrate its effectiveness—handling VTMB and idealization variations, and enhanced computational efficiency (from several hours in existing methods to few minutes). In addition to enhancing the effectiveness of analysis problem formulation, the KCM is envisioned to provide a foundational approach to model formulation for generalized variable topology problems.

KCM Functional Overview Simulation Template Formulation
KCM = Knowledge Composition Methodology General Purpose Graph Transformation Architecture Czarnecki and Helsen (2006); Andries, Engels et al. (1999); Varro et al. (2007) KCM – Simulation Template Formulation Architecture VTMB = variable topology multi-body ABB = analysis building block Design Models

KCM Functional Overview Simulation Template Execution
KCM – Simulation Template Solution Architecture Design Models Simulation Models

Electronics Test Case Level 1: Substrates (PCBs / Panels / Chip Package substrates) 1d. Meshed FEA Model (~10k Elements) 1e. Solved FEA Model 1b. Idealized PCB design (APM) and simulation template (CBAM) 1c. ABB system model (~100+ layered shell analysis bodies) 1a. Substrate Level 3: PCAs PCA top view 3d. Meshed FEA Model 3e. Solved FEA Model 3c. ABB system model (~4000+ bodies; interactions) 3a. PCA 3b. Idealized PCA design (APM) and simulation template (CBAM) Wireframe view top and bottom components Level 2: Chip Packages / PCA components exploded view 2d. Meshed FEA Model (~10k Elements) assembled view 2a. Chip Packages 2b. Idealized chip package design (APM) and simulation template (CBAM) 2c. ABB system model (~ analysis bodies) 2e. Solved FEA model 33

Research Contributions (Bajaj, 2008) Effective Formulation of Complex Simulation Templates
Primary Capabilities Variations in design topology Variations in idealization intent Efficiency 90%+ faster Reusable analysis building blocks (ABBs) Automated composition from building blocks Formal approach based on graph transformations Meta-models for design and behavior model abstractions Libraries of ABBs, transformation patterns, and rules Extensible….

Flattened Graph Visualization [in collaboration with InterCAX—A
Flattened Graph Visualization [in collaboration with InterCAX—A. Scott Fall 2008 internship] Flattened graph [aka COB constraint graph] Flattened graph  graph among value types Block encapsulation not shown Purpose Alternative way to understand / interact with a given model Primitive connections/relationships, structure, complexity, ... Enable visual/intuitive comparison of several models Possible additional SysML view of models Status Prototype that leverages ygraph toolkit Auto-generates flattened graph Construction animation and static final view

Examples Spring systems (with animation)
Road scanning system using LittleEye UAVs Flap linkage mechanical design Multi-year business financial model For further information on these examples, see backup slide below entitled “SysML Parametrics—Suggested Starting Points” for these references: - Examples 1 and 3: Peak et al (IS07 Parts 1 and 2) - Examples 2 and 4: Zwemer and Bajaj 2008 (Frontiers Workshop)

Examples [3] [1] [4] [2]

Composable Object (COB) Views for Sample Problems
(2) Road scanning UAV system (3) Airframe structural part design (4) Multi-year financial projection model (a) Next-gen spreadsheet view (b) Parametric graph view – and

Spring System Example SysML Diagrams

[1] Spring System: Flattened Graph
spring1.r3 spring1.r2 spring1.r1 bc3 bc6 bc2 bc5 bc4 [SysML constraint property name annotations] spring2.r3 spring2.r2 spring2.r1

Traditional Mathematical Representation Tutorial: Two Spring System
System Figure Free Body Diagrams Variables and Relations Boundary Conditions Kinematic Relations Constitutive Relations

TwoSpringSystem parametric diagram – sample instance

Example COB instance: two_spring_system
example 2, state 1.0 (unsolved) (b) Parametrics execution in XaiTools example 2, state 1.1 (solved) <linear_spring loid="_15"> <undeformed_length causality="given">8.0</undeformed_length> <spring_constant causality="given">5.5</spring_constant> </linear_spring> <linear_spring loid="_25"> <spring_constant causality="given">6.0</spring_constant> <two_spring_system loid="_3"> <spring1 ref="_15"/> <spring2 ref="_25"/> <deformation1 causality="target"/> <deformation2 causality="target"/> <load causality="given">10.0</load> </two_spring_system> (a) Lexical COB instance as XML (CXI)

SysML parametrics and solvers SysML-Modelica interoperability [WIP] Generalized mapping underway Contact Chris Paredis for further information Mobile robots demonstration platform

SysML parametrics and solvers SysML-Modelica interoperability Mobile robots demonstration platform

Background & Objectives Domain SysML model (WIP) Demonstration
SysML and Mobile Robotic Systems: A Research Testbed and Educational Platform Status Update R Peak, B Wilson, et al Background & Objectives Domain SysML model (WIP) Demonstration

Institute for Personal Robots in Education (IPRE) — http://www

Background Leveraging Institute for Personal Robots in Education (IPRE) — Multi-university/corporation educational environment Ex. Used in intro comp sci GIT (CS1301) Key elements Mobile robots: IPRE Scribbler, Roomba, SRV-1 Sensors, cameras, Bluetooth, firmware, PCB ECAD, ... Mobile robotics s/w platform: Myro (Python) Primitive operations ... image processing, intro ~AI, ... Domain context Multi-unit systems, command & control, reusability, ... Low-cost and open (non-proprietary)

Objectives—Big Picture
Research & demonstration testbed [achieve MSI Team Phase 2 objectives ...] System run-time operation aided by SysML Embedded software / firmware Hardware-software relations, real-time factors, ... Executable SysML across multiple constructs Activities, parametrics, state machines ... Misc: instance levels, versioning/config mgt. SysML education platform Usage in hands-on courses (industry short courses, university courses, ...) Model it and run it!

= primary Phase 2 aspects addressed by mobile robotics testbed Specific Objectives Extend modeling & simulation interoperability method: MIM 2.0 Generalizations: graph transformations, variable topology, reusability, parametrics 2.x, trade study support, inconsistency mgt., E/MBOM extensions, method workflow, ... Specializations: software, closed-loop control, electronics, ... Interfaces to new tools: Matlab/Simulink, ECAD, Arena, ... Refine SysML and tool requirements to support MIM 2.0 Provide feedback to vendors and OMG SysML 1.2/2.x task forces Demonstrate extensions in updated testbed Define deployment plan and initiate execution Refine roadmap beyond Phase 2

Objectives—Near-Term
Get basic infrastructure in place Prototyping (executable activity basics) Familiarity with IPRE environment (and beyond) Determine what is feasible longer term Develop draft domain SysML model Update big picture objectives and proceed

Scribbler / Myro Demo Executable SysML Activity Model [1 - original]

Scribbler / Myro Demo Executable SysML Activity Model [2 - after interactive update]

Scribbler / Myro Demo Executable SysML Activity Model [activity building blocks]

Contents Phase 1 Overview and Results Phase 2 Progress Summary
From August 2007 to August 2008 Phase 2 Progress From August 2008 to August 2009 Summary

Model-Based Enterprise
Modeling & Simulation Interoperability Benefits of SysML-based Approach Precision Knowledge for the Model-Based Enterprise

MBSE Challenge Team Mechatronics / Model Interoperability Open “Call for Participation”
Systems engineering drivers in commercial settings Increased system complexity Cross-disciplinary communication/coordination Enhancement possibilities based on interest Other demonstration examples and testbeds Interoperability testing between SysML tools Shared models and libraries Primary contacts Russell Peak gatech.edu] Sandy Friedenthal lmco.com] Roger Burkhart JohnDeere.com] Page 58

Related Resources

SysML Parametrics—Suggested Starting Points
Introductory Papers/Tutorials Peak RS, Burkhart RM, Friedenthal SA, Wilson MW, Bajaj M, Kim I (2007) Simulation-Based Design Using SysML—Part 1: A Parametrics Primer. INCOSE Intl. Symposium, San Diego. [Provides tutorial-like introduction to SysML parametrics.] Peak RS, Burkhart RM, Friedenthal SA, Wilson MW, Bajaj M, Kim I (2007) Simulation-Based Design Using SysML—Part 2: Celebrating Diversity by Example. INCOSE Intl. Symposium, San Diego. [Provides tutorial-like introduction on using SysML for modeling & simulation, including the MRA method for creating parametric simulation templates that are connected to design models.] Example Applications Peak RS, Burkhart RM, Friedenthal SA, Paredis CJJ, McGinnis LF (2008) Integrating Design with Simulation & Analysis Using SysML—Mechatronics/Interoperability Team Status Report. Presentation to INCOSE MBSE Challenge Team, Utrecht, Holland. [Overviews modeling & simulation interoperability (MSI) methodology progress in the context of an excavator testbed.] Peak RS (2007) Leveraging Templates & Processes with SysML. Invited Presentation. Developing a Design/Simulation Framework: A Workshop with CPDA's Design and Simulation Council, Atlanta. [Includes applications to automotive steering wheel systems and FEA simulation templates.] Commercial Tools and Other Examples/Tutorials ParaMagic™ plugin for MagicDraw®. Developed by InterCAX LLC (a Georgia Tech spin-off) [1]. Available at Zwemer DA and Bajaj M (2008) SysML Parametrics and Progress Towards Multi-Solvers and Next-Generation Object-Oriented Spreadsheets. Frontiers in Design & Simulation Workshop, Georgia Tech PSLM Center, Atlanta. [Highlights techniques for executing SysML parametrics based on the ParaMagic™ plugin for MagicDraw®. Includes UAV and financial systems examples.] See slides below for additional references and resources. [1] Full disclosure: InterCAX LLC is a spin-off company originally created to commercialize technology from RS Peak’s GIT group. GIT has licensed technology to InterCAX and has an equity stake in the company. RS Peak is one of several business partners in InterCAX. Commercialization of the SysML/composable object aspects is being fostered by the GIT VentureLab incubator program ( via an InterCAX VentureLab project initiated October 2007.

MBX/SysML-Related Efforts at Georgia Tech
SysML Focus Area web page Includes links to publications, applications, projects, examples, courses, commercialization, etc. Frontiers 2008 workshop on MBSE/MBX, SysML, ... Selected projects Deere: System dynamics (fluid power, ...) Lockheed: System design & analysis integration NASA: Enabling technology (SysML, ...) NIST: Design-analysis interoperability (DAI) TRW Automotive: DAI/FEA (steering wheel systems ... )

Selected GIT MBX/SysML-Related Publications Some references are available online at See additional slides for selected abstracts. Peak RS, Burkhart RM, Friedenthal SA, Paredis CJJ, McGinnis LF (2008) Integrating Design with Simulation & Analysis Using SysML—Mechatronics/Interoperability Team Status Report. Presentation to INCOSE MBSE Challenge Team, Utrecht, Holland. [Overviews modeling & simulation interoperability (MSI) methodology progress in the context of an excavator testbed.] McGinnis, Leon F., "IC Factory Design: The Next Generation," e-Manufacturing Symposium, Taipei, Taiwan, June 13, [Presents the concept of model-based fab design, and how SysML can enable integrated simulation.] Kwon, Ky Sang, and Leon F. McGinnis, "SysML-based Simulation Framework for Semiconductor Manufacturing," IEEE CASE Conference, Scottsdale, AZ, September 22-25, [Presents some technical details on the use of SysML to create formal generic models (user libraries) of fab structure, and how these formal models can be combined with currently available data sources to automatically generate simulation models.] Huang, Edward, Ramamurthy, Randeep, and Leon F. McGinnis, "System and Simulation Modeling Using SysML," 2007 Winter Simulation Conference, Washington, DC. [Presents some technical details on the use of SysML to create formal generic models (user libraries) of fab structure, and how these formal models can be combined with currently available data sources to automatically generate simulation models.] McGinnis, Leon F., Edward Huang, Ky Sang Kwon, Randeep Ramamurthy, Kan Wu, "Real CAD for Facilities," 2007 IERC, Nashville, TN. [Presents concept of using FactoryCAD as a layout authoring tool and integrating it, via SysML with eM-Plant for automated fab simulation model generation.] T.A. Johnson, J.M. Jobe, C.J.J. Paredis, and R. Burkhart "Modeling Continuous System Dynamics in SysML," in Proceedings of the 2007 ASME International Mechanical Engineering Congress and Exposition, paper no. IMECE , Seattle, WA, November 11-15, [Describes how continuous dynamics models can be represented in SysML. The approach is based on the continuous dynamics language Modelica.] T.A. Johnson, C.J.J. Paredis, and R. Burkhart "Integrating Models and Simulations of Continuous Dynamics into SysML," in Proceedings of the 6th International Modelica Conference, March 3-4, [Describes how continuous dynamics models and simulations can be used in the context of engineering systems design within SysML. The design of a car suspension modeled as a mass-spring-damper system is used as an illustration.] C.J.J. Paredis "Research in Systems Design: Designing the Design Process," IDETC/CIE 2007, Computers and Information in Engineering Conference -- Workshop on Model-Based Systems Development, Las Vegas, NV, September 4, [Presents relationship between SysML and the multi-aspect component model method.] Peak RS, Burkhart RM, Friedenthal SA, Wilson MW, Bajaj M, Kim I (2007) Simulation-Based Design Using SysML—Part 1: A Parametrics Primer. INCOSE Intl. Symposium, San Diego. [Provides tutorial-like introduction to SysML parametrics.] Peak RS, Burkhart RM, Friedenthal SA, Wilson MW, Bajaj M, Kim I (2007) Simulation-Based Design Using SysML—Part 2: Celebrating Diversity by Example. INCOSE Intl. Symposium, San Diego. [Provides tutorial-like introduction on using SysML for modeling & simulation, including the MRA method for creating parametric simulation templates that are connected to design models.] Peak RS (2007) Leveraging Templates & Processes with SysML. Invited Presentation. Developing a Design/Simulation Framework: A Workshop with CPDA's Design and Simulation Council, Atlanta. [Includes applications to automotive steering wheel systems and FEA simulation templates.] Bajaj M, Peak RS, Paredis CJJ (2007) Knowledge Composition for Efficient Analysis Problem Formulation, Part 1: Motivation and Requirements. DETC , Proc ASME CIE Intl Conf, Las Vegas. [Introduces the knowledge composition method (KCM), which addresses design-simulation integration for variable topology problems.] Bajaj M, Peak RS, Paredis CJJ (2007) Knowledge Composition for Efficient Analysis Problem Formulation, Part 2: Approach and Analysis Meta-Model. DETC , Proc ASME CIE Intl Conf, Las Vegas. [Elaborates on the KCM approach, including work towards next-generation analysis/simulation building blocks (ABBs/SBBs).]

Integrating Design with Simulation & Analysis Using SysML—Mechatronics/Interoperability Team Status Report Abstract This presentation overviews work-in-progress experiences and lessons learned from an excavator testbed that interconnects simulation models with associated diverse system models, design models, and manufacturing models. The goal is to enable advanced model-based systems engineering (MBSE) in particular and model-based X1 (MBX) in general. Our method employs SysML as the primary technology to achieve multi-level multi-fidelity interoperability, while at the same time leveraging conventional modeling & simulation tools including mechanical CAD, factory CAD, spreadsheets, math solvers, finite element analysis (FEA), discrete event solvers, and optimization tools. This work is currently sponsored by several organizations (including Deere and Lockheed) and is part of the Mechatronics & Interoperability Team in the INCOSE MBSE Challenge. Citation Peak RS, Burkhart RM, Friedenthal SA, Paredis CJJ, McGinnis LF (2008) Integrating Design with Simulation & Analysis Using SysML—Mechatronics/Interoperability Team Status Report. Presentation to INCOSE MBSE Challenge Team, Utrecht, Holland. [1] The X in MBX includes engineering (MBE), manufacturing (MBM), and potentially other scopes and contexts such as model-based enterprises (MBE).

Simulation-Based Design Using SysML
Part 1: A Parametrics Primer OMG SysML™ is a modeling language for specifying, analyzing, designing, and verifying complex systems. It is a general-purpose graphical modeling language with computer-sensible semantics. This Part 1 paper and its Part 2 companion show how SysML supports simulation-based design (SBD) via tutorial-like examples. Our target audience is end users wanting to learn about SysML parametrics in general and its applications to engineering design and analysis in particular. We include background on the development of SysML parametrics that may also be useful for other stakeholders (e.g, vendors and researchers). In Part 1 we walk through models of simple objects that progressively introduce SysML parametrics concepts. To enhance understanding by comparison and contrast, we present corresponding models based on composable objects (COBs). The COB knowledge representation has provided a conceptual foundation for SysML parametrics, including executability and validation. We end with sample analysis building blocks (ABBs) from mechanics of materials showing how SysML captures engineering knowledge in a reusable form. Part 2 employs these ABBs in a high diversity mechanical example that integrates computer-aided design and engineering analysis (CAD/CAE). The object and constraint graph concepts embodied in SysML parametrics and COBs provide modular analysis capabilities based on multi-directional constraints. These concepts and capabilities provide a semantically rich way to organize and reuse the complex relations and properties that characterize SBD models. Representing relations as non-causal constraints, which generally accept any valid combination of inputs and outputs, enhances modeling flexibility and expressiveness. We envision SysML becoming a unifying representation of domain-specific engineering analysis models that include fine-grain associativity with other domain- and system-level models, ultimately providing fundamental capabilities for next-generation systems lifecycle management. Part 2: Celebrating Diversity by Example These two companion papers present foundational principles of parametrics in OMG SysML™ and their application to simulation-based design. Parametrics capabilities have been included in SysML to support integrating engineering analysis with system requirements, behavior, and structure models. This Part 2 paper walks through SysML models for a benchmark tutorial on analysis templates utilizing an airframe system component called a flap linkage. This example highlights how engineering analysis models, such as stress models, are captured in SysML, and then executed by external tools including math solvers and finite element analysis solvers. We summarize the multi-representation architecture (MRA) method and how its simulation knowledge patterns support computing environments having a diversity of analysis fidelities, physical behaviors, solution methods, and CAD/CAE tools. SysML and composable object (COB) techniques described in Part 1 together provide the MRA with graphical modeling languages, executable parametrics, and reusable, modular, multi-directional capabilities. We also demonstrate additional SysML modeling concepts, including packages, building block libraries, and requirements-verification-simulation interrelationships. Results indicate that SysML offers significant promise as a unifying language for a variety of models-from top-level system models to discipline-specific leaf-level models. Citation Peak RS, Burkhart RM, Friedenthal SA, Wilson MW, Bajaj M, Kim I (2007) Simulation-Based Design Using SysML. INCOSE Intl. Symposium, San Diego. Part 1: A Parametrics Primer Part 2: Celebrating Diversity by Example

Composable Objects (COB) Requirements & Objectives
Abstract This document formulates a vision for advanced collaborative engineering environments (CEEs) to aid in the design, simulation and configuration management of complex engineering systems. Based on inputs from experienced Systems Engineers and technologists from various industries and government agencies, it identifies the current major challenges and pain points of Collaborative Engineering. Each of these challenges and pain points are mapped into desired capabilities of an envisioned CEE System that will address them. Next, we present a CEE methodology that embodies these capabilities. We overview work done to date by GIT on the composable object (COB) knowledge representation as a basis for next-generation CEE systems. This methodology leverages the multi-representation architecture (MRA) for simulation templates, the user-oriented SysML standard for system modeling, and standards like STEP AP233 (ISO ) for enhanced interoperability. Finally, we present COB representation requirements in the context of this CEE methodology. In this current project and subsequent phases we are striving to fulfill these requirements as we develop next-generation COB capabilities. Citation DR Tamburini, RS Peak, CJ Paredis, et al. (2005) Composable Objects (COB) Requirements & Objectives v1.0. Technical Report, Georgia Tech, Atlanta. Associated Project The Composable Object (COB) Knowledge Representation: Enabling Advanced Collaborative Engineering Environments (CEEs).

Leveraging Simulation Templates & Processes with SysML Applications to CAD-FEA Interoperability
Abstract SysML holds the promise of leveraging generic templates and processes across design and simulation. Russell Peak joins us to give an update on the latest efforts at Georgia Tech to apply this approach in various domains, including specific examples with a top-tier automotive supplier. Learn how you too may join this project and implement a similar effort within your own company to enhance modularity and reusability through a unified method that links diverse models. Russell will also highlight SysML’s parametrics capabilities and usage for physics-based analysis, including integrated CAD-CAE and simulation-based requirements verification. Go to for background on SysML—a graphical modeling language based on UML2 for specifying, designing, analyzing, and verifying complex systems. Speaker Biosketch Russell S. Peak focuses on knowledge representations that enable complex system interoperability and simulation automation. He originated composable objects (COBs), the multi-representation architecture (MRA) for CAD-CAE interoperability, and context-based analysis models (CBAMs)—a simulation template knowledge pattern that explicitly captures design-analysis associativity. This work has provided the conceptual foundation for SysML parametrics and its validation. He teaches this and related material, and is principal investigator on numerous research projects with sponsors including Boeing, DoD, IBM, NASA, NIST, Rockwell Collins, Shinko Electric, and TRW Automotive. Dr. Peak joined the GIT research faculty in 1996 to create and lead a design-analysis interoperability thrust area. Prior experience includes business phone design at Bell Laboratories and design-analysis integration exploration as a Visiting Researcher at Hitachi in Japan. Citation RS Peak (2007) Leveraging Simulation Templates & Processes with SysML: Applications to CAD-FEA Interoperability. Developing a Design/Simulation Framework, CPDA Workshop, Atlanta.

INCOSE IW09 Feb 2, 2009  San Francisco

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