STEP Tutorial: “STEP Capability Today and Tomorrow” Keith Hunten, Lockheed Martin January 16, 2001 PDES, Inc. ®
Agenda l Current Capabilities – Application Protocols – Modules l Evolving Capabilities – – PDES, Inc. ® STEP for the Web Product Life Cycle Support Systems Engineering STEP NC (Numerical Control) Copyright PDES, Inc. 2001
STEP Crosses Multiple Industries l l l l Aerospace Automotive Electronics Shipbuilding Software Process Plant Building & Construction PDES, Inc. ® Copyright PDES, Inc. 2001
l. STEP Application Protocols (APs
ISO 10303 -202: Associative Draughting http: //pdesinc. aticorp. org/aps. html PDES, Inc. ® Copyright PDES, Inc. 2001
ISO 10303 -203: Configuration Controlled 3 D Designs of Mechanical Parts and Assemblies http: //pdesinc. aticorp. org/aps. html Configuration Management • Authorisation • Control(Version/Revision) • Effectivity • Release Status • Security Classification • Supplier Geometric Shapes • Advanced BREP Solids • Faceted BREP Solids • Manifold Surfaces with Topology • Wireframe with Topology • Surfaces and Wireframe without Topology Specifications • Surface Finish • Material • Design • Process • CAD Filename Product Structure • Assemblies • Bill of Materials • Part • Substitute Part • Alternate Part PDES, Inc. ® Copyright PDES, Inc. 2001
ISO 10303 -209: Composite & Metallic Analysis & Related Design http: //pdesinc. aticorp. org/aps. html Analysis Discipline Product Definitions Information Shared Between Analysis & Design • Finite Element Analysis • 3 D Shape Representations –Model (Nodes, Elements, Properties, . . . ) –Controls (Loads, Boundary Constraints, . . . ) –Results (Displacements, Stresses, . . . ) • Composite Constituents • Material Specifications & Properties • Analysis Report • Part Definitions Design Discipline Product Definition Composite Constituents • Shape Representations • Ply Boundaries, Surfaces • Assemblies • Laminate Stacking Tables • Reinforcement Orientation Configuration Control, Approvals • Part, product definitions • Finite element analysis model, controls, and results PDES, Inc. ® 3 D Shape Representation • AP 202/203 Commonality Plus Composite Specific 3 D Shapes –Advanced B-Representation –Facetted B-Representation –Manifold Surfaces With Topology –Wireframe & Surface without Topology –Wireframe Geometry with Topology –Composite Constituent Shape Representation Copyright PDES, Inc. 2001 Material Specifications & Properties • Composites • Homogeneous (metallics)
ISO 10303 -210: Electronic Assembly, Interconnect and Packaging Design http: //pdesinc. aticorp. org/aps. html • • • Physical Component Placement Bare Board Geometry Layout items Layers non-planar, conductive & non-conductive Material product Geometry • Geometrically Bounded 2 -D • Wireframe with Topology • Surfaces • Advanced BREP Solids • Constructive Solid Geometry Design Control • Geometric Dimensioning and Tolerancing Product Structure/ Connectivity • Functional • Packaged Requirements • Design • Allocation • Constraints • Interface • Rules • • • Part Functionality Termination Shape 2 D, 3 D Single Level Decomposition Material Product Characteristics • • Configuration Mgmt Identification Authority Effectivity Control Requirement Traceability Analytical Model Document References Technology • Fabrication Design Rules • Product Design Rules
ISO 10303 -212: Electrotechnical Design and Installation http: //public. prostep. de/spo/ Electrotechnical Systems • Buildings • Plants • Transportation Systems Data Supporting • Terminals and Interfaces • Functional Decomposition of Product • 3 D Cabling and Harnesses • Cable Tracks and Mounting Instructions Electrotechnical Plant • Plant, e. g. , Automobile • Unit, e. g. , Engine Control System • Subunit, e. g. , Ignition System Equipment Coverage • Power-transmission • Power-distribution • Power-generation • Electric Machinery • Electric Light and Heat • Control Systems Electrotechnical Equipment in Industry PDES, Inc. ® Copyright PDES, Inc. 2001
ISO 10303 -214: Core Data for Automotive Mechanical Design Processes http: //public. prostep. de/spo/ Geometry • Solids Data • Surface Data • Wireframe Presentation • Drawing • Visualization • Measured Data Analysis • Simulation Manufacturing • NC-Data • Process Plans Technology Data • Material Data Specification/Configuration • Form Features • Product Structure Data • Tolerance Data • Management Data • Surface Conditions
Shipbuilding APs http: //www. nsnet. com/NIDDESC/t 23. html l ISO 10303 -215 -- Ship Arrangement l ISO 10303 -216 -- Ship Moulded Forms l ISO 10303 -218 -- Ship Structures l ISO 10303 -226 -- Ship Mechanical Systems PDES, Inc. ® Copyright PDES, Inc. 2001
ISO 10303 -221: Functional Data and their Schematic Representation for Process Plant http: //www. stepcom. ncl. ac. uk/epistle/ap 221. htm Plant Types • Power Generation • Nuclear • Conventional • Chemical • Petroleum Across Plant Life Cycle • Provide Continuity for • Design • Construction • Operation Identifies & Describes • Equipment • Components • Systems • Subsystems 2 D Schematic Displays (Piping and Instrumentation diagrams) • Connectivity of Equipment • Pipeline designation (line number) • Direction of fluid flows Copyright PDES, Inc. 2001 • Control-loop designation/component PDES, Inc. ®
ISO 10303 -224: Mechanical Product Definition for Process Planning Using Machining Features http: //isg. scra. org/products/step_ap 224. html Machining Features • • • Boss Hole Fillet Groove Pocket Measurement Limitations • Angularity • Flatness • Radial Dimension • Material Condition Modifier • Tolerance Range Manufacturing Part Properties • Material Property • Part Property • Process Property • Hardness Feature Definition Items & Profiles • Path • Taper • Profile • Bottom Condition • End Types Shape Representation Part Administration Data • Approval • Person in Organization • Brep Model • Explicit Base Shape • Block Base Shape • Ngon Base Shape • Cylindrical Base Shape
ISO 10303 -225: Building Elements Using Explicit Shape Representation http: //www. haspar. de/Ap 225/index_eng. htm Building Element Shape Building Element Types • Component Structure • Structural • Service Elements • Fixtures, Equipment • Explicit Shape Representation • Elementary (planar), Analytic (simple geometry) & Free Form (complex geometry) Building Element Properties Building Structure • Composition • Simple Property • Simple Classification • Location of Elements • Assemblies of Elements PDES, Inc. ® Copyright PDES, Inc. 2001
ISO 10303 -227: Plant Spatial Configuration http: //cic. nist. gov/plantstep/plantstp/ap 227. htm Plant Layout Plant Item • Location of Plant-items • Site Description • Change Control • Type • Connections • Functional/Physical • Definition/Occurrence Plant Systems • Line Definitions • Composition • Capabilities • Component Connectivity PDES, Inc. ® Shape Functional/Analysis • Interference • Performance Requirements • Requirement Satisfaction Copyright PDES, Inc. 2001 • Explicit Shape • Brep • CSG
AP 232: Technical Data Packaging Core Information and Exchange http: //pdesinc. aticorp. org/aps. html Product Data Group Packaging Document Configuration • Product Structure Based • Versioning • Product/Document Relationships • Representation Forms • Exchange Configuration Parameters • Identification of Content File(s) • Ties all Forms of Product Data together (Both STEP and Non-STEP data) • Configuration Parameters Product Data Groups (Non-STEP) PDM System A Associated Lists • Parts List • Drawings • Data List • CAD Models • Index List • Associated Lists • Indentured Data List • Reference Documents • Other Lists • Analysis Files • Presentation • NC Program PDM System B • etc. Product Data Sets (Shape) • Advanced B-Representation Product Data Groups (STEP) • AP 232 • AP 209 • AP 203 • AP XXX PDES, Inc. ® Exchange Parameters • Reason • Destination • Identification of Associated Business Documents Copyright PDES, Inc. 2001 • Facetted B-Representation • Manifold Surfaces with Topology • Wireframe and Surface without Topology • Wireframe Geometry with Topology
l. STEP Modules
Modular Extension Strategy STEP Modules APs with initial AICs CDIMs/ APs AP AICAP AP Islands of APs 1988 -1994 AP AP Interoperability Plug and Play 1998 -2003 1994 -1998 AP 203 - IS (example) PDES, Inc. ® Colors/ Layers Copyright PDES, Inc. 2001 Associative Text Validation Properties …….
Colors/Layers/Groups http: //pdesinc. aticorp. org/modules. html USAGE SCENARIOS Used for design coordination between different IPTs and Suppliers to: • differentiate components in mockups • identify different components per IPT or System, such as: • forward fuselage/wing/cockpit • hydraulic/electrical/fuel • identify supplier/vendor components • identify high temperature components • identify design stability of components PDES, Inc. ® Copyright PDES, Inc. 2001
Product Data Management (PDM) http: //pdesinc. aticorp. org/modules. html USAGE SCENARIOS • Exchange bill of materials • Exchange only the information that has changed (net change) Component 1 PDES, Inc. ® Component 2 • Exchange configuration management data Copyright PDES, Inc. 2001
Scope of the PDM Modules Part Management Part Identification Part Structure Part Properties Alias Identification Effectivity Document Management Document Identification File Identification Document Structure Document/ File Properties Authorization Person and Organization Date and Time Approval Security Classification PDES, Inc. ® Contract Copyright PDES, Inc. 2001 Work and Change Management Geometry Assignment and Transformation
Dimensional Tolerances http: //pdesinc. aticorp. org/modules. html 100. 00±. 05 + 100. 00±. 05 50. 00±. 05 20. 00±. 05 USAGE SCENARIOS • Identify critical dimensions and tolerances for components • Provide Dimensions/ 50. 00±. 05 Tolerance data independently of orthographic drawings - e. g. , for Coordinate Measuring Machine programming PDES, Inc. ® Copyright PDES, Inc. 2001
Drafting Annotation/Notes http: //pdesinc. aticorp. org/modules. html USAGE SCENARIOS • Portray attributes, concepts about parts not captured geometrically Forward Edge • Provide reference information • Add process information/clarifications • Identify peculiarities of design • Identify design constraints • Present tolerances PDES, Inc. ® Copyright PDES, Inc. 2001
Associative Dimension and Model Viewing http: //pdesinc. aticorp. org/modules. html drawing_sheet_revision presentation_view 1. 5 2. 0 +. 01 -. 03 2. 0 +. 02 PDES, Inc. ® Copyright PDES, Inc. 2001
Geometric Validation Properties http: //pdesinc. aticorp. org/modules. html Volume & centroid (x, y, z) Surface area USAGE SCENARIOS • Geometric Properties can be calculated from the geometric definition; they are exchanged to enable the validation of translation processes • Enables highlighting geometry whose properties have changed beyond a user supplied tolerance(s) - User investigates geometry that changes outside the specified tolerance PDES, Inc. ® Copyright PDES, Inc. 2001
Construction History http: //pdesinc. aticorp. org/modules. html 3 rd cut Node: “ 1 st cut” with 2 children, “Revolve” and “Extrude USAGE SCENARIOS 2 nd cut 1 st cut Revolve Extrude PDES, Inc. ® Leaf: a primitive block with no children • When a model parameter changes the construction history can be replayed to update the design geometry • Use construction history to analyze/modify order of design operations Copyright PDES, Inc. 2001
Engineering Analysis http: //pdesinc. aticorp. org/modules. html USAGE SCENARIOS • CAE to CAE Exchange • AP 209 to represent CAE/CAD/PDM • AP 209 for Long Term Data Retention The Engineering Analysis Core Model (EACM) supports other areas of analysis, such as Computational Fluid Dynamics PDES, Inc. ® Copyright PDES, Inc. 2001
l. Evolving Capabilities
STEP for the Web l The Web has its own implementation technology, XML and XML-related standards l The Web lacks standardized vocabularies, content and/or schemas l STEP is strong on content! l PDES, Inc. and others are working to make STEP content available to Web implementors in a form they know - XML PDES, Inc. ® Copyright PDES, Inc. 2001
Web Content Standardization l The goal is to publish STEP schemas in XML for Web developers l ISO 10303 -28 is a mapping from STEP EXPRESS to XML l PDES, Inc. has created a separate STEPml web site to support Web implementors -http: //www. stepml. org – Publish Usage Guides, not ISO standards, that document the STEP “schemas” in Web format (Data Type Definitions - DTDs, OMG’s XML Schema) PDES, Inc. ® Copyright PDES, Inc. 2001
PDES, Inc. ® Copyright PDES, Inc. 2001
Product Life Cycle Support (PLCS) Areas of Development http: //www. plcsinc. org/ l Support Engineering – Provide and sustain the support infrastructure l Resource Management – Buy, store, pack, move, issue and dispose of the physical product Support Engineering Resource Management CM/Change Control Maintenance and Feedback l CM/Change Control – Manage change to a configured item throughout the life cycle including tracking of serial number where applicable l Maintenance and Feedback – Maintain, test, diagnose, calibrate, repair and modify physical product, including schedules, resources and feedback PDES, Inc. ® Copyright PDES, Inc. 2001
Systems Engineering http: //www. sedres. com STEP AP 233 is evolving to satisfy Systems Engineering requirements Customer Requirements trade studies Requirements analysis Requirements Baseline validation System Functional trade studies Functional analysis Functional Verification Analysis Design trade studies Synthesis Physical Verification PDES, Inc. ® Copyright PDES, Inc. 2001 Control Sub-System specifications
STEP-NC (ISO 14649) http: //www. steptools. com/library/stepnc Design Planning Department CAD workpiece data CAM system Shopfloor programming Direct control of machine tools from 3 D data New data model and interface (ISO 14649) Postprocessor Conventional NC controller PDES, Inc. ® Intelligent functions Modern NC controller Copyright PDES, Inc. 2001 e. g. automatic - path generation - tool selection - technology suppor - retract strategies - machine limits New, Intelligent NC controller Courtesy WZL RWTH Aachen
Summary l STEP provides fast, reliable data exchange between partners and suppliers using different systems l Extensive STEP capabilities are available today for use by multiple industries l Powerful new evolving capabilities will be available in 2001 PDES, Inc. ® Copyright PDES, Inc. 2001
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