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AN OVERVIEW OF COMPUTER AIDED ENGINEERING/DESIGN (CAE/D) SYSTEMS AND DATA

AN OVERVIEW OF COMPUTER AIDED ENGINEERING/DESIGN (CAE/D) SYSTEMS AND DATA. ROBERT E. FULTON PROFESSOR OF MECHANICAL ENGINEERING DIRECTOR ATLANTA ELECTRONIC COMMERCE RESOURCE CENTER GEORGIA INSTITUTE OF TECHNOLOGY ATLANTA, GEORGIA Robert.fulton@me.gatech.edu 404-894-9514. PRESENTED AT

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AN OVERVIEW OF COMPUTER AIDED ENGINEERING/DESIGN (CAE/D) SYSTEMS AND DATA

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  1. AN OVERVIEW OF COMPUTER AIDED ENGINEERING/DESIGN (CAE/D) SYSTEMS AND DATA ROBERT E. FULTON PROFESSOR OF MECHANICAL ENGINEERING DIRECTOR ATLANTA ELECTRONIC COMMERCE RESOURCE CENTER GEORGIA INSTITUTE OF TECHNOLOGY ATLANTA, GEORGIA Robert.fulton@me.gatech.edu 404-894-9514 PRESENTED AT OPEN SOURCE SOFTWARE FRAMEWORK FOR ORGAN MODELING AND SIMULATION LISTER HILL CENTER, NATIONAL LIBRARY OF MEDICINE BETHESDA, MD JULY 23, 2001

  2. OUTLINE ENGINEERING INFORMATION MANAGEMENT INTRODUCTION TO STEP STANDARD EXAMPLE OF RESEARCH ON LINKING ANALYSIS AND GEOMETRY MODELS GEORGIA TECH CENTER FOR: INFORMATION TECHNOLOGY FOR INTEGRATING MANUFACTURING ENTERPRISE SYSTEMS (i TIMES) CONTACTS: DIRECTOR: DR. FARROKH MISTREE PHONE: 404-894-8412 farrokh.mistree@me.gatech.edu TECHNICAL DIRECTOR: DR. RUSSELL PEAK PHONE: 404-894-7572 russell.peak@angostura.marc.gatech.edu

  3. PHYSICAL PRODUCT INFORMATION PRODUCT RESULTS CHARACTERISTICS OF ENGINEERING DESIGN LARGE TEAMS MULTIDISCIPLINARY DIVERSE TEAMS TODAY’S REQUIREMENTS INCLUDE FASTER, BETTER, CHEAPER PRODUCTS BUILT BY DISTRIBUTED TEAMS REQUIRES NUMEROUS COMPUTER BASED TOOLS AND PRODUCES ENORMOUS DATA SETS INFORMATION MANAGEMENT STRATEGIES ARE ESSENTIAL

  4. COMPUTER BASED ENGINEERING SYSTEMS REQUIREMENTS ELECTRONICS STRUCTURES INTEGRATED DATA BASE GEOMETRY MATERIALS LOADS, STANDARDS SPECS, RESULTS ETC., ETC., ETC. STABILITY & CONTROL FLUID MECHANICS NC MACHINING THERMAL MECHANICS ETC

  5. TYPICAL CAD SYSTEMS PRO-E, CATIA, UNIGRAPHICS, IDEAS, ETC. VARIATIONS IN THEORY, MODELING APPROACHES USER FEATURES, INTERFACE CAPABILITIES GEOMETRY: NASTRAN, ANSYS, IDEAS, ABAQUS, ETC VARIATIONS IN THEORY, FINITE ELEMENT MODELS, USER FEATURES, ETC. STRUCTURAL ANALYSIS: INCLUDED IN MOST STRUCTURAL ANALYSIS SYSTEMS AND HAS SIMILAR CHARACTERISTICS THERMAL ANALYSIS: WIDE VARIETY OF SYSTEMS WITH DIFFERENT STRATEGIES FOR SUBSONIC, TRANSONIC AND SUPERSONIC FLOW FLUID MECHANICS:

  6. PRO-E IDEAS CATIA CRITICAL PRODUCT DATA MANAGEMENT NEED STANDARD INFORMATION MODELING APPROACH TO INTEGRATE PRODUCT LIFECYCLE DATA MODERATELY HETEROGENEOUS GEOMETRY SYSTEMS HIGHLY HETEROGENEOUS ANALYSIS SYSTEMS DIFFERENT DATA STRUCTURES, THEORIES, AND IDEALIZATIONS STRUCTURAL MODEL THERMAL MODEL MOST CAD SYSTEMS OWNED BY DIFFERENT VENDORS MULTIPLE TEAMS, LONG DEVELOPMENT TIMES PRODUCT DEMANDS FOR BETTER, FASTER, CHEAPER DESIGNS

  7. ENGINEERING INFORMATION MANAGEMENT APPROACH DEVELOP A STANDARD FOR EXCHANGE OF PRODUCT MODEL DATA (STEP) 10 + YEARS OF WORK, THOUSANDS OF PARTICIPANTS INTERNATIONAL STANDARDS, SOME APPROVED, OTHERS IN WORKS BUILT ON OBJECT AND SOFTWARE AGENT TECHNOLOGY USES AN INFORMATION MODELING STANDARD FOR DEFINING STEP MODELS (EXPRESS) CONTAINS BOTH GRAPHICS AND PROGRAMMABLE SYNTAX FORMS

  8. DATA MODELING STANDARD (EXPRESS) SPECIFIC DISCIPLINE ORIENTED APPLICATION PROTOCOLS API AP 203 GEOM/CONFIG MANAGEMENT ETC., ETC. AP 210 ELECTRONICS A SIMPLE VIEW OF STEP LAYERS OF BUILDING BLOCKS SUCH AS GEOMETRY, CONCEPTS, LINKAGES, S/W AGENTS, ETC.

  9. STEP STATUS CORE CAPABILITIES IN PLACE MANY VENDORS STEP CERTIFIED INTERNATIONAL TEAM CONTINUING DEVELOPMENT SOLID BUILDING BLOCKS AVAILABLE FOR EXTENSIONS EXTENSIVE TECHNICAL/COMPUTER FOUNDATION IN PLACE KEY ASSOCIATIONS IN PLACE ISO/TAG STANDARDS GROUP US PRODUCT DATA ASSOCIATION (US PRO) SUPPORTING DEVELOPMENT AND DISTRIBUTION OF STEP PDES, INC. INDUSTRY GROUP EVALUATING AND APPLYING STEP KEY US GOVERNMENT AGENCIES SUPPORTING STEP NIST/ NASA/DOD

  10. little automation inconsistency No explicit fine-grained CAD-CAE associativity little knowledge capture G idealizations = K f ( r , b , h ) 3 1 P P = f C = f be 1 2 ht se p 2 r t e 0 e Missing Today:Explicit Design-Analysis Associativity Detailed Design Model Analysis Model (with Idealized Features) Channel Fitting Analysis “It is no secret that CAD models are driving more of today’s product development processes ... With the growing number of design tools on the market, however, the interoperability gap with downstream applications, such as finite element analysis, is a very real problem. As a result, CAD models are being re-created at unprecedented levels.” Ansys/ITI press Release, July 6 1999 http://www.ansys.com/webdocs/VisitAnsys/CorpInfo/PR/pr-060799.html

  11. Part Product Structure/ Connectivity • Functionality • Termination • Shape 2D, 3D • Single Level Decomposition • Material Product • Characteristics • Functional • Packaged Physical Configuration Mgmt • Identification • Authority • Effectivity • Control • Requirement Traceability • Analytical Model • Document References Geometry • Geometrically Bounded • 2-D Shape • Wireframe with Topology • Advanced BREP Solids • Constructive Solid Geometry Requirements • Design • Allocation • Constraints • Interface Technology • Fabrication Design Rules • Product Design Rules STEP AP 210PWA/B Design Information • Component Placement • Bare Board Geometry • Layout items • Layers non-planar, • conductive & non-conductive • Material product

  12. Analysis Integration Challenges: Information Diversity “Analyzable” Description Environmental Conditions “Manufacturable” Description Specification Semantics STEP AP220 STEP AP210 • “PWB should • withstand lamination” • “Warpage < 0.005 when • board is heated from 25 • to 150oC” lamination temperature = 150oC Idealizations

  13. Solder Joint Deformation PWA Cooling Solder Joint Deformation 3-D bounding box Multi-Fidelity, Multi-Usage Idealizations Analysis Models Idealized Views Multiple Uses 2-D bounding box Design Model Multi-Fidelity Idealizations Multiple Uses PWA Cooling

  14. X-Analysis Integration Techniques a. Multi-Representation Architecture (MRA) b. Explicit Design-Analysis Associativity c. Analysis Module Methodology X = design, manufacture, ...

  15. Pro AM Flexible High Diversity Design-Analysis IntegrationElectronic Packaging Examples: PWA/B Design Tools Modular, Reusable Template Libraries Analysis Modules (CBAMs) of Diverse Mode & Fidelity ECAD Tools Mentor Graphics, Accel* Analysis Tools XaiTools PWA-B General Math Mathematica STEP AP210‡ GenCAM**, PDIF* 1D, 2D, 3D Solder Joint Deformation* FEAAnsys PWB Layup Tool XaiTools PWA-B Analyzable Product Model PWB Warpage XaiToolsPWA-B 1D, 2D Laminates DB PTH Deformation & Fatigue** Materials DB 1D, 2D ‡ AP210 DIS WD1.7 * = Item not yet available in toolkit (all others have working examples) ** = Item available via U-Engineer.com

  16. SUMMARY PRODUCT DATA AND HUMAN DATA HAVE MANY SIMILAR CHARACTERISTICS LARGE, COMPLEX, EVOLVING, MULTIDISCIPLINARY, GEOMETRY/ ANALYSIS/EXPERIMENTALLY BASED, MULTIMEDIA, ETC. PRODUCT INFORMATION MANAGEMENT HAS MADE SIGNIFICANT PROGRESS SINCE 1970’S DIGITAL HUMAN STRATEGY NEEDS TO USE STEP PRODUCT DATA MODELING AS A STARTING POINT FOR FUTURE NEEDS

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