1. Model data and exchange between different models. ISO 10303.
Laboratory No. 11
Model data and exchange between different models. ISO
Dr. László Horváth

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. Data exchange between modeling systems1 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

9. 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

10. Initial Graphics Exchange Specification
IGES - Initial Graphics Exchange Specification.
Development started in 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

11. 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

12. 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

13. 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

14. 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

15. 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 in 1994.
László Horváth UÓ-JNFI-IAM

16. The STEP product model (original scenario) Implementation of STEP
AP Configuration-Controlled 3D Design
Geometry, product structure and configuration management.
AP 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

17. 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

18. 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.

19. 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