Model data and exchange between different models. ISO 10303. Laboratory No. 11 Model data and exchange between different models. ISO 10303. Dr. László Horváth http://users.nik.uni-obuda.hu/lhorvath/

László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/ This presentation is intellectual property. It is available only for students in my courses. The screen shots in tis presentation was made in the CATIA V5 and V6 PLM systems the Laboratory of Intelligent Engineering systems, in real modeling process. The CATIA V5 és V6 PLM systems operate in the above laboratory by the help of Dassult Systémes Inc. and CAD-Terv Ltd. László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/ Content Lecture Product data management. Characteristics of data in engineering virtual space. Engineering modeling specific data base management functions. Product structure. Data exchange between modeling systems. Development of data exchange standards. Initial Graphics Exchange Specification. Product model standard. Laboratory task MD 13 Survey and summary of modeling in the course (See elaborated modeling tasks in materials for previous laboratories.) László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

Product data management (PDM) Characteristics Product centric database management. Integrated in modeling environments. Management of product structure and its connections with the related items. Widespread, high complexity, and huge amount of data are to be managed. Coordinated management of design data and engineering processes. In integration with other company activities. It is available for lifecycle of product. Effective tool for the reveal of engineering information related problems. Functions Information handling. Change management. Process control. Product structure handling Considerations at product data configuration Company management objectives. Product. Company organization. Human factor: motivation, experience, former fails, quality. László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

Characteristics of data in engineering virtual space Configurable products, high number variants. Modeling of products in groups. Modeling generic product structures. Huge amount of data. High number of principles, formats. Complex system of relationships. Various positions and roles of users. Developing maturity: in work, in analysis, ready design, in installation, in maintenance, in operation. For lifecycle of product (PLM). László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

Engineering modeling specific data base management functions General Open system Product related Multiple simultaneous access Access from user programs Projects Groups Acceptance procedures Various standards Product structure Change management Access from external data bases History of model construction Integrity of data base Interfaces to other systems Status reports Relationships of objects High number of platforms László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/ Product structure Connection with modeling tools. Revisions, alternatives, variants, and options. Multilevel bill of materials, BOM). Generation of specific views for groups. Graphic supported navigation in multilevel systems. Attributes: connection with parts and units, and related data. Transfer to other modifications. Relationships: part-part, part-data, one-several, several-several, tracking and inheritance of attributes, taxonomy. László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

Data exchange between modeling systems 1 2 3 4 5 Direct data exchange Data base A1 Direct conversion Data base A2 Data base A1 standardized Exchange between standardized data bases Data base A1 standardized Data base A1 Data exchange without conversion Data base A2 Data exchange with associative connection Data base A1 Data base A2 1 3 4 5 2 Neutral format Indirect data exchange Data base A1 Conversion to neutral format Data exchange in standard format Conversion to format of data base 2 Data base A2 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

Development of data exchange standards ISO 10303 STEP IGES 1.0 CAM-I XBF-2 ESP ANSI Y14.26 VDA/FS 1.0 project ESPIRIT PDES project IGES 2.0 DIN 66301 IGES 3.0 VDA/FS 2.0 IGES 4.0 IGES 5.0 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

Initial Graphics Exchange Specification IGES - Initial Graphics Exchange Specification. Development started in 1979. Former neutral format standards at Boeing and General Electric companies was substantial effect. ANSI (American National Standard Institute accepted and adapted the IGES as ANSI Y14.26M in 1981. Wide support of the engineering drawing capable IGES 1.0 and 2.0 by engineering system developers. The IGES 4.0 and 5.0 variants was developed for B-rep solid models. IGES standard was included in the STEP product model standard. The IGES file is a sequence of entities with parameters. Relationship entities are available. The IGES file includes geometrical, topological and non-geometric data. User definition of special entities is available. László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

Examples for IGES entities 100 arc IGES entities Curves 102 complex curve 110 line Geometric entities Surfaces 112 parametric spline 126 NURBS Solids Others 108 plane 114 parametric spline 124 transformation matrix 122 tabulated cylinder 132 connection point 128 NURBS Annotation entities 136 finite element 140 offset surface 144 trimmed parametric surface Structure entities 302 associativity definition 154 cylinder 502 vertex 402 asszociativíty instance 156 cone 504 edge 202 angle 158 sphere 508 loop 412 rectangular array 206 diameter 216 length 184 solid assembly 510 face 418 node information 220 dimension for point 514 shell László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/ IGES MACRO Definition Concentric circles: 306 MACRO,603, XC,YC,ZC,R,N Parallel lines: 306 MACRO,609, X1,Y1,Z1,X2,Y2,Z2,D,N Instances 603 1,1,1,3,6 603 5,2,8,9,4 609 1,1,1,2,2,1,1,5 609 2,6,8,12,15,6,2,8 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

Tests for IGES processor Reflection test Source side Model preprocessing IGES file Source side postprocessing Transmission test Source side Model preprocessing IGES file Target side Transfer to target side postprocessing Model László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

Tests for IGES processor Loopback test Source side Model preprocessing IGES file Source side Transfer to target side postprocessing Target side Transfer to source side postprocessing IGES file Target side Model preprocessing László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

Product model standard STEP (Standard for Exchange of Product Model Data). International data communication standard for modeling and data exchange of products. In coordination with former data exchange standards (E.g. IGES). STEP involves numerous former data exchange standards. For mechanical, electrical, electronic, and structural design. Grounded by the PDES project for development of product models. Unified model representation of product model related information. 1994: Europe and USA concerns: implementation and application of STEP as international product data exchange standard. The STEP standard was registered as ISO 10303 in 1994. László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

The STEP product model (original scenario) Implementation of STEP AP 203 - Configuration-Controlled 3D Design Geometry, product structure and configuration management. AP 214 - Core Data for Automotive Mechanical Design Automotive industry oriented geometry, product structure, form features, materials, and tolerances. Integrated Resources Application Resources Engineering drawing Electric Finite element analysis Kinematic Generic Resources Product definition Geometry and topology Represenattion Product structure Tolerance Materials Form features Presentation Processesk Application protocols (AP) Implementation procedures Physical file Standard data access interface Data base Knowledge base Drawing) Associative drawing Mechanical design Ship building Tube network Electrical design Generic data structures are defined STEP entities Product data in EXPRESS language Entities in EXPRESS language Application independent Application specific entities From entities of generic resources Cite generic resources Entities are cross-referenced László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

STEP application protocols (AP) The STEP give a set of generic definitions which are applicable in different APs. These are Application Integrated Constructs. Product data in an AP can be shared between different design systems. This can demands elaboration of interfaces for several systems and providing tools for integration of partial data to complete data exchange data. The STEP part 21 defines EXPRESS sourced data exchange file format. The STEP AP is a formal document which describes: Activities during lifecycle of product on the basis of AAM - Application Activity Model, Product information which is necessary for activities: ARM - Application Reference Model and formals EXPRESS information model AIM (Application Interpreted Model) Combination of information models and relevant constraints. László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/

STEP AP: AIM - Application Interpreted Model AO - Application Object The AIM serves as basic of data exchange implementation. EXPRESS information model. It contains same information as ARM: structures and constraints. Basic Application Objects (AO ) are described using the library of existing definitions (generic and integrated resources). AO - Application Object The AO is divided into Units of Functionality (UOF). The UOF gives logically complete information subset about one of the aspects of product. For example, Design Activity Control UOF serves tracking of modifications during the full lifecycle of product in the AP 203. In this case AO for example requirement for modification. The AP 203 iicludes 36 AOs in these UOFs: Authorization, BOM, Design Information, Effectivity, End Item Identification, Part Identification, Shape, Source Control.

MD 13 laboratory exercise Survey and summary of modeling in the course (See elaborated modeling tasks in materials for previous laboratories.) László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/