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Cad Geometry Data Exchange Using Step Realisation of Interface Processors : Research Reports Esprit / Project 2195. Cadex - Helmut J. Helpenstein

Cad Geometry Data Exchange Using Step Realisation of Interface Processors

Research Reports Esprit / Project 2195. Cadex

By: Helmut J. Helpenstein (Editor)

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With increasing demand for data exchange in computer integrated manufacturing, a neutral connection between dissimilar systems is needed. After a few national and European attempts, a worldwide standardization of product data has been developed. Standard ISO 10303 (STEP - STandard for Exchange of Product data) produced in its first version those parts that are relevant for CAD geometrical data. A European consortium of 14 CAD vendors and users was supported by the ESPRIT programme to influence the emerging standard and implement early applications for it. Over the years 1989-1992, project CADEX (CAD geometry data EXchange) worked out application protocols as a contribution to STEP; developed a software toolkit that reads, writes, and manipulates STEP data; and, based on this toolkit, implemented data exchange processors for ten different CAD and FEA systems. This book reports the work done in project CADEX and describes all its results in detail.

1. Introduction.- 2. Application Protocols and STEP relations.- 2.1 Entity tables and mapping to STEP.- 2.1.1 Objectives for the table of entities.- 2.1.2 The table of native entities mapped to STEP.- 2.1.3 Other CAD model entities which require a STEP model transfer.- 2.1.4 A general association capability.- 2.1.5 Considerations on the attribute association of STEP entities.- 2.2 Work in the ISO and the concept of Application Protocols.- 2.2.1 Overview on CADEX contributions and activities to ISO/STEP.- 2.2.2 The Concept of an Application Protocol.- 2.2.3 Table of contents of an ISO Application Protocol.- 2.2.4 The Mechanical Design Application Protocol concept.- 2.2.5 List of open STEP issues from CADEX point of view.- 2.2.6 Recommendations to STEP.- 2.2.7 Other ISO work.- 2.3 ISO Application Protocols.- 2.3.1 Application Protocol for mechanical design using boundary representation.- 2.3.2 Application Protocol for mechanical design using surface representation.- 2.3.3 Application Protocol for mechanical design using wirefame representation.- 2.3.4 EXPRESS long form of the Product Structure module.- 2.4 Other CADEX Application Protocols.- 2.5 Relationships between Application Protocols.- 2.5.1 Domains of the Application Protocols.- 2.5.2 Conversion between different Application Protocols.- 2.5.3 Shape entites from multiple APs in single files.- 2.5.4 Application Interpreted Constructs.- 3. Common Tool Kit.- 3.1 Introduction.- 3.2 The architecture of the CADEX pre- and postprocessors.- 3.2.1 Overview.- 3.2.2 Description of the architecture.- 3.2.3 Organisation of the development.- 3.3 Technical description.- 3.3.1 IDS.- 3.3.2 Scanner and parser.- 3.3.3 Formatter.- 3.3.4 Checker.- 3.3.5 Statistics tools.- 3.3.6 Conversion tools.- 3.3.6.1 General remarks on conversion tools.- 3.3.6.2 Conversion tools by SI.- 3.3.6.3 Conversion tools by GfS.- 3.3.6.4 Conversion tools by FEGS Ltd.- 3.4 User's Guide.- 3.4.1 IDS.- 3.4.2 Scanner and parser.- 3.4.3 Formatter.- 3.4.4 Checker.- 3.4.5 Statistics tools.- 3.4.6 User's guide of SI tools.- 3.4.7 User's guide of GfS tools.- 3.4.8 User's guide of FEGS tools.- 4. Development of Processors.- 4.1 Det Norske Veritas Research.- 4.1.1 Introduction.- 4.1.2 Processor architecture.- 4.1.3 Post-processor backend.- 4.1.4 Post-processor conversion.- 4.1.5 Pre-processor frontend.- 4.1.6 Available processors.- 4.1.7 Future.- 4.1.8 Examples.- 4.2 DISEL.- 4.2.1 Introduction.- 4.2.2 Development environment.- 4.2.3 Processors description.- 4.3 FEGS Ltd.- 4.3.1 Introduction.- 4.3.2 The status of FAM.- 4.3.3 The processors that have been developed.- 4.3.4 Requirements to the processors.- 4.3.5 System architecture.- 4.3.6 User interface and software operation.- 4.3.7 Transfer between IDS and FAM.- 4.3.8 Conversions between IDS and FAM.- 4.3.9 Conversions between STEP entities on IDS.- 4.3.10 The support of the boundary-representation AP, ISO 10303-204.- 4.3.11 The support of the surface AP, ISO 10303-205.- 4.3.12 The support of the wire frame AP, ISO 10303-206.- 4.3.13 The support of the compound b-rep AP.- 4.3.14 Current status.- 4.3.15 The experience gained in the project.- 4.3.16 Future plans, FAM and FAMexchange..- 4.4 Gesellschaft fur Strukturanalyse.- 4.4.1 Introduction.- 4.4.2 Models to be covered.- 4.4.3 Functionality.- 4.4.4 Implementation and Test.- 4.5 Hewlett-Packard.- 4.5.1 Introduction.- 4.5.2 HP's ME30 STEP pre-processor.- 4.5.3 HP's SolidDesigner STEP post-processor..- 4.5.4 HP's SolidDesigner STEP pre-processor.- 4.5.5 Examples of model exchange.- 4.5.6 References.- 4.6 ISYKON and PROCAD.- 4.6.1 Introduction.- 4.6.2 The pre-processors.- 4.6.3 The post-processors.- 4.6.4 The dialogue language.- 4.6.5 Integrated test tools.- 4.6.6 Summary.- 4.7 ITALCAD.- 4.7.1 Introduction.- 4.7.2 Processor architecture.- 4.7.3 Processors built.- 4.7.4 Implementation and test.- 4.8 Kongsberg 3D Partner A.S.- 4.8.1 Introduction.- 4.8.2 System architecture.- 4.8.3 Pre-processor implementation.- 4.8.4 Post-processor implementation.- 4.8.5 Error and log handling.- 4.8.6 Testing.- 4.8.8 Comments and exploitation of results.- 4.9 Senter for Industriforskning.- 4.9.1 Summary and applicable documents.- 4.9.2 The SISL system.- 4.9.3 Requirements for the SISL-STEP interface.- 4.9.4 Architecture of the SISL-STEP processors.- 4.9.5 General information on the SISL-STEP processors.- 4.9.6 Processor details.- 4.10 Siemens-Nixdorf-Informationssysteme.- 4.10.1 Overview.- 4.10.2 System and processor architecture.- 4.10.3 Processor for SF-AP.- 4.10.4 Processor for BRep-AP.- 5. Test and Validation.- 5.1 Introduction.- 5.2 User acceptance testing.- 5.2.1 The user roles in CADEX.- 5.2.2 Types of tests.- 5.2.3 Test data.- 5.2.4 Test procedures.- 5.2.5 Software tool support.- 5.3 Conformance testing.- 5.3.1 Introduction and definition.- 5.3.2 Motivation for performing conformance testing.- 5.3.3 Influence of the CEC funded CTS2 project.- 5.3.4 Types of tests.- 5.3.5 AP conformance requirements.- 5.3.6 AP test purposes.- 5.3.7 Test data and procedures.- 5.4 The FIAT test library.- 5.4.1 Choice of the models.- 5.4.2 Model generation description (MGD).- 5.4.3 Data transfer evaluation criteria.- 5.5 Test plan and results.- 5.5.1 Test plan.- 5.5.2 Test results of Gesellschaft fur Strukturanalyse..- 5.5.3 Test results of Siemens Nixdorf..- 5.5.4 Test results of Senter for Industriforskning.- 5.5.5 Test results of Kongsberg 3D Partner A.S.- 5.5.6 Test results of Italcad.- 5.5.7 Test results of Procad and Isykon.- 5.5.8 Test results of Hewlett Packard.- 5.5.9 Test results of DISEL.- 5.6 Bibliography.

ISBN: 9783540569022
ISBN-10: 3540569022
Series: Research Reports Esprit / Project 2195. Cadex
Audience: General
Format: Paperback
Language: English
Number Of Pages: 432
Publisher: Springer-Verlag Berlin and Heidelberg Gmbh & Co. Kg
Country of Publication: DE
Dimensions (cm): 23.39 x 15.6  x 2.31
Weight (kg): 0.62