1. STEP Tutorial: “STEP Capability Today and Tomorrow” Keith Hunten, Lockheed Martin January 16, 2001
PDES, Inc.

2. Agenda Current Capabilities Evolving Capabilities
Application Protocols
Modules
Evolving Capabilities
STEP for the Web
Product Life Cycle Support
Systems Engineering
STEP NC (Numerical Control)

3. STEP Crosses Multiple Industries
Aerospace
Automotive
Electronics
Shipbuilding
Software
Process Plant
Building &
Construction

4. STEP Application Protocols (APs)

5. ISO 10303-202: Associative Draughting http://pdesinc. aticorp. org/aps

6. ISO : Configuration Controlled 3D Designs of Mechanical Parts and Assemblies
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

7. ISO 10303-209: Composite & Metallic Analysis & Related Design http://pdesinc.aticorp.org/aps.html
Configuration Control, Approvals
Part, product definitions
Finite element analysis model, controls, and results
Analysis Discipline Product Definitions
Finite Element Analysis
Model (Nodes, Elements, Properties,...)
Controls (Loads, Boundary Constraints,...)
Results (Displacements, Stresses,...)
Analysis Report
Design Discipline Product Definition
Shape Representations
Assemblies
Information Shared Between Analysis & Design
3D Shape Representations
Composite Constituents
Material Specifications & Properties
Part Definitions
Ply Boundaries, Surfaces
Laminate Stacking Tables
Reinforcement Orientation
Composites
Homogeneous (metallics)
3D Shape Representation
AP202/203 Commonality Plus Composite Specific 3D Shapes
Advanced B-Representation
Facetted B-Representation
Manifold Surfaces With Topology
Wireframe & Surface without Topology
Wireframe Geometry with Topology
Composite Constituent Shape Representation

8. ISO : Electronic Assembly, Interconnect and Packaging Design
Product Structure/
Part
Connectivity
Functionality
Termination
Shape 2D, 3D
Single Level Decomposition
Material Product
Characteristics
Functional
Packaged
Physical
Component Placement
Bare Board Geometry
Layout items
Layers non-planar,
conductive & non-conductive
Material product
Configuration Mgmt
Identification
Authority
Effectivity
Control
Requirement Traceability
Analytical Model
Document References
Geometry
Geometrically Bounded 2-D
Wireframe with Topology
Surfaces
Advanced BREP Solids
Constructive Solid Geometry
Requirements
Design
Allocation
Constraints
Interface
Rules
Design Control
Technology
Geometric Dimensioning and Tolerancing
Fabrication Design Rules
Product Design Rules

9. ISO 10303-212: Electrotechnical Design and Installation http://public
Data Supporting
Terminals and Interfaces
Functional Decomposition of Product
3D Cabling and Harnesses
Cable Tracks and Mounting Instructions
Electrotechnical Systems
Buildings
Plants
Transportation Systems
Electrotechnical Equipment in Industry
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

10. ISO 10303-214: Core Data for Automotive Mechanical Design Processes
Geometry
Solids Data
Surface Data
Wireframe
Measured Data
Presentation
Drawing
Visualization
Manufacturing
NC-Data
Process Plans
Analysis
Simulation
Technology Data
Material Data
Form Features
Tolerance Data
Surface Conditions
Specification/Configuration
Product Structure Data
Management Data

11. Shipbuilding APs http://www.nsnet.com/NIDDESC/t23.html
ISO Ship Arrangement
ISO Ship Moulded Forms
ISO Ship Structures
ISO Ship Mechanical Systems

12. ISO : Functional Data and their Schematic Representation for Process Plant
Plant Types
Power Generation
Nuclear
Conventional
Chemical
Petroleum
Across Plant Life Cycle
Provide Continuity for
Design
Construction
Operation
Identifies & Describes
Equipment
Components
Systems
Subsystems
2D Schematic Displays
(Piping and Instrumentation diagrams)
Connectivity of Equipment
Pipeline designation (line number)
Direction of fluid flows
Control-loop designation/component

13. ISO : Mechanical Product Definition for Process Planning Using Machining Features
Machining Features
Boss
Hole
Fillet
Groove
Pocket
Manufacturing Part
Properties
Material Property
Part Property
Process Property
Hardness
Feature Definition
Items & Profiles
Path
Taper
Profile
Bottom Condition
End Types
Measurement
Limitations
Angularity
Flatness
Radial Dimension
Material Condition Modifier
Tolerance Range
Shape Representation
Brep Model
Explicit Base Shape
Block Base Shape
Ngon Base Shape
Cylindrical Base Shape
Part Administration
Data
Approval
Person in Organization

14. Building Element Properties
ISO : Building Elements Using Explicit Shape Representation
Building Element Shape
Component Structure
Explicit Shape Representation
Elementary (planar),
Analytic (simple geometry) &
Free Form (complex geometry)
Building Element Types
Structural
Service Elements
Fixtures, Equipment
Building Element Properties
Simple Property
Simple Classification
Building Structure
Composition
Location of Elements
Assemblies of Elements

15. ISO 10303-227: Plant Spatial Configuration http://cic. nist
Plant Item
Type
Connections
Functional/Physical
Definition/Occurrence
Plant Layout
Location of Plant-items
Site Description
Change Control
Shape
Explicit Shape
Brep
CSG
Plant Systems
Line Definitions
Composition
Capabilities
Component Connectivity
Functional/Analysis
Interference
Performance Requirements
Requirement Satisfaction

16. AP232: Technical Data Packaging Core Information and Exchange http://pdesinc.aticorp.org/aps.html
Product Data Group Packaging
Product Structure Based
Product/Document Relationships
Exchange Configuration Parameters
Ties all Forms of Product Data together
(Both STEP and Non-STEP data)
Document Configuration
Versioning
Representation Forms
Identification of Content File(s)
Configuration Parameters
PDM System A
Associated Lists
Parts List
Data List
Index List
Indentured Data List
Other Lists
Presentation
Product Data Groups (Non-STEP)
Drawings
CAD Models
Associated Lists
Reference Documents
Analysis Files
NC Program
etc.
PDM System B
Product Data Sets (Shape)
Advanced B-Representation
Facetted B-Representation
Manifold Surfaces with Topology
Wireframe and Surface without Topology
Wireframe Geometry with Topology
Product Data Groups (STEP)
AP 232
AP 209
AP 203
AP XXX
Exchange Parameters
Reason
Destination
Identification of Associated Business Documents

17. STEP Modules

18. Modular Extension Strategy
CDIMs/
APs
AP Interoperability
Plug and Play
Islands of APs
APs with
initial AICs AP
AIC
AP203 - IS
(example)
STEP
Modules
Colors/
Layers
Validation
Properties
…….
Associative
Text

19. 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
identify design stability of

20. 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)
Exchange configuration management data
Component 1
Component 2

21. Scope of the PDM Modules
Alias Identifi- cation
Part Management
Document Management
Part Identification
Document Identification
File Identification
Effec-
tivity
Part Structure
Part Properties
Document Structure
Document/ File Properties
Authorization
Contract
Work and
Change Management
Geometry
Assignment
and
Transformation
Person and Organization
Date and Time
Approval
Security Classification

22. Dimensional Tolerances http://pdesinc.aticorp.org/modules.html
100.00±.05 +
50.00±.05
20.00±.05
USAGE SCENARIOS
Identify critical dimensions and tolerances for components
Provide Dimensions/ Tolerance data independently of orthographic drawings
- e.g., for Coordinate Measuring Machine programming

23. Drafting Annotation/Notes http://pdesinc.aticorp.org/modules.html
USAGE SCENARIOS
Portray attributes, concepts about parts not captured geometrically
Provide reference information
Add process information/clarifications
Identify peculiarities of design
Identify design constraints
Present tolerances
Forward
Edge

24. Associative Dimension and Model Viewing http://pdesinc. aticorp
drawing_sheet_revision
presentation_view
1.5 .5
+.01
2.0
-.03

25. Geometric Validation Properties http://pdesinc. aticorp. org/modules
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
Volume &
centroid (x,y,z)
Surface area

26. Construction History http://pdesinc.aticorp.org/modules.html
3rd cut
2nd cut
1st cut
Revolve
Node: “1st cut” with 2
children, “Revolve” and
“Extrude
Leaf:
a primitive
block with
no children
Extrude
USAGE SCENARIOS
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

27. Engineering Analysis http://pdesinc.aticorp.org/modules.html
USAGE SCENARIOS
CAE to CAE Exchange
AP209 to represent CAE/CAD/PDM
AP209 for Long Term Data Retention
The Engineering Analysis Core Model (EACM) supports other
areas of analysis, such as Computational Fluid Dynamics

28. Evolving Capabilities

29. STEP for the Web
The Web has its own implementation technology, XML and XML-related standards
The Web lacks standardized vocabularies, content and/or schemas
STEP is strong on content!
PDES, Inc. and others are working to make STEP content available to Web implementors in a form they know - XML

30. Web Content Standardization
The goal is to publish STEP schemas in XML for Web developers
ISO is a mapping from STEP EXPRESS to XML
PDES, Inc. has created a separate STEPml web site to support Web implementors --
Publish Usage Guides, not ISO standards, that document the STEP “schemas” in Web format (Data Type Definitions - DTDs, OMG’s XML Schema)

32. Product Life Cycle Support (PLCS) Areas of Development http://www
Support Engineering
Provide and sustain the support infrastructure
Resource Management
Buy, store, pack, move, issue and dispose of the physical product
CM/Change Control
Manage change to a configured item throughout the life cycle including tracking of serial number where applicable
Maintenance and Feedback
Maintain, test, diagnose, calibrate, repair and modify physical product, including schedules, resources and feedback
Support
Engineering
Maintenance
and
Feedback
CM/Change
Control
Resource
Management

33. Systems Engineering http://www.sedres.com
STEP AP233 is evolving to satisfy Systems Engineering requirements
Customer
Requirements
System
Analysis
Requirements analysis
Requirements trade studies
Requirements Baseline validation
Functional analysis
Functional trade studies
Functional Verification
Synthesis
Design trade studies
Physical Verification
Sub-System specifications
Control

34. Courtesy WZL RWTH Aachen
STEP-NC (ISO 14649)
Design
CAD workpiece data
Direct control of machine tools from 3D data
CAM
Planning
system
Department
Shopfloor
Shopfloor
programming
New data model and interface (ISO 14649)
e.g. automatic
- path generation
Post-
Intelligent
processor
- tool selection
functions
- technology support
- retract strategies
- machine limits
Conventional
Modern
New, Intelligent
NC controller
NC controller
NC controller
Courtesy WZL RWTH Aachen

35. Summary
STEP provides fast, reliable data exchange between partners and suppliers using different systems
Extensive STEP capabilities are available today for use by multiple industries
Powerful new evolving capabilities will be available in 2001