1. STEP Support For Design And Analysis Processes PDES, Inc./NASA STEP Tutorial Session NASA Jet Propulsion Laboratory January 16, 2001

2. General Comments l Basis Of MSC.Software Products and Services –Design Simulation And Engineering Analysis - CAE l STEP Application Protocols Presently Supported –AP203 (IS) – Design Centric/Generally CAD Generated –AP209 (DIS) – Design And/Or Analysis Centric/CAD And/Or CAE Generated l MSC.Software STEP Usage Philosophy - Two Basic Paradigms –AP203 Usage – Primarily A One-Direction Design Data Only Exchange Nominal Shape & Associated Configuration Management/Product Structure Generated In CAD Product And Output As An AP203 File AP203 File Imported To Verify and Validate Design Using Analytical Simulation Processes –AP209 Usage – Bi-Directional Design & Engineering Analysis Data Exchange Same Two Items Defined For AP203 Usage (AP209 Can Be Substituted For AP203) Idealized Shape Generated From And Associated To Imported Nominal Shape FEA Model And Analysis Results Generated Analysis Version/Product Structure Generated And Associated To Imported Design Entire Associated Design And Analysis Discipline Data (Nominal Shape, Idealized Shape, FEM/FEA, Version Control/Product Structure) Exported For Multi-Discipline Exchange And/Or For Repository Storage

3. MSC.Patran (Version 9.5) STEP AP203 Coverage l AP203 Import (See Backup Information For Specifics) –CC2 through CC6 supported –Minimum subset of CC1 supported –Group based geometry supported –Assemblies supported (assembly instances duplicated into individual MSC.Patran Groups) –Assembly support available only for CC6 entities –Names of geometric entities preserved using tagged CAD association l AP203 Export (See Backup Information For Specifics) –All MSC.Patran geometry entities supported –Imported CC1 exported unaltered –Names of geometric entities preserved using tagged CAD association –Only CC2 and CC6 shape representations supported

4. MSC.Patran (Version 9.5) STEP AP209 Coverage l AP209 Import/Export (See Backup Information For Specifics) –Geometry/Configuration Control (= AP203 Coverage) –Nodes/Elements –Materials –Element Properties –Loads and Boundary Conditions –Load Cases –Analysis Controls –Results (Linear Statics, Normal Modes) l AP203/AP209 translators Web downloadable: –http://www.mscsoftware.com/ (Select the following in order: Products, Support, Product Updates = MSC.Patran, Software and Online Documentation Updates, MSC.Patran 2000r2 (V9.5) STEP Translator (AP203/AP209))

5. MSC Focus Today - AP209 Acceptance/Missionary Role l AP209/IS Status Scheduled For 2001 l Translators Presently Offered By One CAD/CAE Vendor – MSC.Software l Theorem Solutions Developing CATIA/V4 AP209 Translators (Lockheed, Boeing Electric Boat Funded In Support Of The PDES, Inc. Engineering Analysis Pilot Project) l Why AP209? PDM CADCAE AP209 Significantly Extended Source Of Enterprise Wide Data CAE Vendor Product Neutral File Industry Standard Data Model For Corporate Wide Simulation Process Integration Single Design AND Analysis Data Source Within The Enterprise PDM Platform To Extend Engineering Analysis STEP Coverage Into All Analysis Disciplines (Part 107) Long Term Repository Critical To Aircraft Industry

6. AP209 Added Value To The Design/Analysis Process l Multi-Discipline Version Control –Design controlled by designer (ddpd) –Analysis controlled by analyst (adpd) Many types of analysis Analysis revised independent of the design version Analysis version is always with respect to a design version –Relationship provided to associate design and analysis versions (advr) l Extended Shape Representations –AP203 Nominal Design Shape (NDS) - Design generated –Idealized Analysis Shape (IAS) and Node Shape (NS) - Analyst generated –NDS forms basis for IAS –New shape extensions to AP203 - Constituent_Shape_Representation Defined to support composites Possibly could support non-composites attributed design shape extensions –Curve with cross-section shape –Surface with thickness (and/or associated attribute tables) l Foundation for Design Intent/Analysis Review Communications Between Designer and Analyst –additional_design_information (Design Specifications, Material Specifications, etc.) –analysis_report_representation (Text Documents, Graphical Documents)

7. g_m_r a_d_v_r part_version part d_d_p_d a_d_p_d analysis_version analysis n_d_s i_d_s g_m_r shape_aspect shape g_m_r analysis_shape node_shape point_model g_m_r fea_model node element fe_analysis CAE CAD parent_shape geometry part_number version design d_s version analysis_number analysis basis d_s m_s_w_t a_b_r f_b_r n_t_s_a_w w_w_t c_sheet_r d_m ply_shape b_sheet_rt_d_g_s constituent_shape_representation constituent_part of_part p_p_sl_p_sf_p_p_s ply_piece ply thickness ply_laminate processed_core composite_assembly filament_laminate filament_laminate_shape shape X-section Shape g_r a_r_r t_r d_s a_d_i specification AP203 Coverage AP209 (ARM) On-A-Page (See Backup Information For Symbol Definitions)

8. MSC.Patran Beta Version AP209 Extensions l Geometry/Configuration Control –Visualization Tools for Configuration Control Data l Composites –Support for Ply Laminate Tables, Zones (Percentage Laminate Definitions, Thickness Laminate Definitions Comprising Processed Cores), and Smeared Materials –Visualization and Manipulation Tools for Ply Laminates, Zones (Percentage Laminate Definitions, Thickness Laminate Definitions),and Smeared Materials –New Composite Tools and Database Extensions Zones to Properties Zones to Plies Properties to Zones Plies to Properties Etc. l Analysis Report And Document –Database Extensions –Support for Association of Analysis Reports and Jobs –Visualization Tools

9. Alternate Representations of Composites Supported By AP209

10. Flat Pattern, 3D Plies, FEM Sample Problem

14. AP203/AP209 Free Web-Based STEP Viewer l Developed For the PDES, Inc. Engineering Analysis Pilot Project To Support Promotion Of AP209 Extended PDM/CAD/CAE Data Coverage l Beta Version 5 Available Today –Geometry - Conformance Classes 2 and 6 Only –PDM - Minimum Subset Of Conformance Class 1 –Mesh – Nodes/Elements –Materials/Properties (Tree Mode Only) –Load Cases/LBCs (Tree Mode Only) l Future Versions Will Extend Coverage –Full Graphical Viewing and Selection of AP209 Properties, Materials, LBCs, Results –Additional Geometry Classes l Access At http://simulate.engineering-e.com/demo (Must Register And Download Citrix Plug-in Before MSC.StepViewer Available)http://simulate.engineering-e.com/demo

15. MSC.Software Demo Web Site For StepViewer Access

20. AP209 Awareness Through Demonstrations (Completed/AP209 CD) PDES, Inc. Design-To-Analysis Phase 1 (1994) Ford, Boeing, Lockheed, ITI, MSC Auto And Composite Tank Structures CAD-To-CAE-To-CAE COTS CAD/CAE (ARIES, PATRAN, NASTRAN, ITI/STRESSLAB) Linear Static FEA Video Generated, PDES, Inc. TAC Demo DARPA MADE/IPDE Program Phase 1 (1996) Boeing, ASU, MSC Aircraft Structures CAD-To-CAE(CFD)-To-CAE(Structures)-To-CAE(CFD) COTS CAD/CAE (CATIA, PATRAN, NASTRAN) Boeing Proprietary CFD (AGPS/A502) Iterative 1st Order CFD And Linear Static FEA In-House Boeing Demo, PDES, Inc. Offsite Presentation

21. AP209 Awareness Through Demonstrations (Cont.) (Completed/AP209 DIS) - Lockheed, Electric Boat, MSC Electric Boat Design-To-Analysis Process (1998) Ship Structures CAD-To-CAE-To-CAE-To-CAD COTS CAD/CAE (PRO/E, PATRAN, NASTRAN) Electric Boat Proprietary (COMMANDS) Multiple Idealized Geometric Shapes And FEM/FEA Models Linear Static And Dynamic FEA PDES, Inc. TAC Demo (November 1998) Lockheed Design/Manufacture/Analysis Composites Process (1999) Composite Aircraft Structures CAD/CAM-To-CAE-To-CAD/CAM COTS CAD/CAE (CATIA, FiberSIM, PATRAN, NASTRAN) Lockheed Proprietary (ASSS, PICASSO) Composite Structure Geometric Shapes (Ply/Zone) And FEM/FEA Models Linear Static And Dynamic FEA PDES, Inc. TAC Demo (June 1999)

22. Backup Information

23. MSC.Patran Version 9.5 AP203 Import Coverage –Class2 : Geometrically Bounded Surface Shape Representation  Mapped Item  Axis2_Placement_3d  B_spline surface  Rectangular Trimmed Surface  Curve Bounded Surface  Spherical, Toroidal Surface  Swept Surface  Circle, Ellipse  Trimmed Curve  Composite Curve  Curve Replica, Offset Curve 3d, Offset Curve 2d, SeamCurve  Surface Curve  Boundary Curve, Outer Boundary Curve, Composite Curve Segment

24. MSC.Patran Version 9.5 AP203 Import Coverage (Cont.) –Class 2: Geometrically Bounded Wireframe Shape Representation  Geometric Curve Set  Axis2_Placement_3d  Points  Circle  Ellipse  Polyline  Trimmed curve –Class 3: Edge Based Wireframe Shape Representation  Edge Based Wireframe Model  Axis2_Placement_3d  Edge Curve  Vertex Point  Line, Circle, Ellipse, B_Spline_Curve  Parabola, Hyperbola Vertex Geometry (only cartesian point supported)

25. MSC.Patran Version 9.5 AP203 Import Coverage (Cont.) –Class 3: Shell Based Wireframe Shape Representation  Shell Based Wireframe Model  Axis2_Placement_3d  Edge Loop  Edge Curve  Line, Circle, Ellipse, B_Spline_Curves Vertex Geometry (only cartesian point supported) –Class 4: Manifold Surface Shape Representation  Shell Based Surface Model  Axis2_Placement_3d  Open shell, Closed Shell  Connected Face Set, Face Surface, Oriented Face  Elementary Surfaces  Spherical, Conical, Toroidal, Plane, Cylindrical  Bounded Surfaces  B_Spline_Surfaces

26. MSC.Patran Version 9.5 AP203 Import Coverage (Cont.)  Swept Surface  Surface of Linear Extrusion  Edge loop  Edge Curve  Parabola, Hyperbola, SeamCurve –Class 5: Faceted Brep Shape Representation  Faceted Brep  Axis2_Placement_3d  Face_Surface  Planar Surfaces  Edge Loop  Edge Curves  Parabola, Hyperbola, SeamCurve –Class 6 : Advanced Brep Shape Representation  Manifold Solid Brep  Next Assembly Usage Occurrence

27. MSC.Patran Version 9.5 AP203 Import Coverage (Cont.)  Mapped Item  Axis2_Placement_3d  Brep with voids  Advanced Face  Swept Surface,  Surface of linear Extrusion  Surface of Revolution  Edge Loop  Edge Curve  Oriented Edges  B_spline_surface_with_knots  Rational_bspline_surface  Cylindrical surface  Conical Surface  Toroidal Surface

28. MSC.Patran Version 9.5 AP203 Import Coverage (Cont.)  Plane  Quasi uniform surface  Line  Circle  Uniform Surface  Uniform Curve  Ellipse  B spline curve with knots  Quasi uniform curve  Rational bspline curve  Bezier Surface and Curve  Spherical Surface  Parabola, Hyperbola,  Seam Curve

29. MSC.Patran Version 9.5 AP203 Export Coverage –Curves (MSC.Patran to AP203 Geometric Entity Mapping) PieceWise_Cubic_Polynomial_Curve -- B_spline_Curve_with _knots IGES_Nurb_Curve -- B_spline_Curve_with _knots IGES_Cubic_Spline -- B_spline_Curve_with _knots IGES_Arc -- Circle IGES_Composite_Curve -- Composite_curve IGES_line -- Line IGES_Conic_Ellipse -- Ellipse IGES_Conic_Hyperbola -- Hyperbola IGES_Conic_Parabola -- Parabola IGES_PieceWise_Linear -- B_spline_Curve_with _knots Rational_Bezier -- B_spline_Curve_with _knots Curve_On_Surface_Isometric -- B_spline_Curve_with _knots Curve_On_Surface_General -- B_spline_Curve_with _knots PDA_line -- Line IGES_Offset_Curve -- Offset_Curve_2d_Offset_Curve_3d CATIA_curve -- B_spline_curve_with_knots COMPUTER_VISION_Curve -- B_spline_curve_with_knots N_Dimensional_Cubic_Spline -- B_spline_curve_with_knots Plane_Project_Curve_Normal -- B_spline_Curve_with _knots Plane_Project_Curve_Vector -- B_spline_Curve_with _knots

30. MSC.Patran Version 9.5 AP203 Export Coverage (Cont.) –Surfaces (MSC.Patran to AP203 Geometric Entity Mapping) IGES_Nurb_Surface -- B_spline_surface_with_knots IGES_Trimmed_Surface -- Curve_bounded_surface(Class II) & Advanced_face ( Class VI) IGES_BiCubic_Patch_Network -- B_spline_surface_with_knots IGES_Surface_Of_Revolution -- Surface_Of_Revolution IGES_Ruled_Surface -- B_spline_surface_with_knots IGES_tabulated_Cylinder -- Surface_Of_Linear_Extrusion Rational_Bezier_Network -- B_spline_surface_with_knots Ordinary_Trimmed_Surface -- Curve_Bounded_Surface PDA_Patch -- Plane if Class VI Or B_spline_surface_with_knots Bilinear_Coons_Surface -- B_spline_surface_with_knots IGES_Offset_Surface -- Offset_surface PTC_Plane -- Plane PTC_Cylinder -- Cylindrical_surface PTC_cone -- Conical_surface PTC_torus -- Toroidal_surface PTC_fillet_surface -- B_spline_surface_with_knots PTC_generalised_Coons_Surface -- B_spline_surface_with_knots CATIA_Surface -- B_spline_surface_with_knots PieceWise_Rational_Polynomial_Surface -- B_spline_surface_with_knots

31. MSC.Patran Version 9.5 AP203 Export Coverage (Cont.) Surface_On_Solid -- B_spline_surface_with_knots Curve_Interpolating_Surface -- B_spline_surface_with_knots Extruded_Surface -- Surface_of_linear_Extrusion Glide_Surface -- B_spline_surface_with_knots Composite_Trim_Surface -- B_spline_surface_with_knots PTC_sphere -- Spherical_surface –Solids (MSC.Patran to AP203 Geometric Entity Mapping) ASM solids -- B-Rep Ordinary Brep -- B-Rep

32. MSC.Patran Version 9.5 AP209 Import/Export Coverage –Geometry/Configuration Control Complete MSC.Patran AP203 geometry coverage provided Minimum subset of CC1 plus analysis/design version association entity –Nodes Global coordinate system –Elements Volume 3D Hexahedral elements -- HEX8, HEX9, HEX20, HEX21, HEX26, HEX27, HEX32&HEX64 Pentahedral elements -- WEDGE6, WEGE15 & WEDGE24 Tetrahedral elements -- TET4,TET10&TET16 Surface 3D Quadratic elements -- QUAD4,QUAD5,QUAD8, QUAD9,QUAD12&QUAD16 Triangular elements -- TRI3,TRI4,TRI6&TRI9 Curve 3D BAR2,BAR3&BAR4

33. MSC.Patran Version 9.5 AP209 Import/Export Coverage (Cont.) –Materials Isotropic, Orthotropic and Anisotropic –Element Properties Surface elements - Membrane Stiffness, Bending Stiffness, Coupling stiffness, Shear stiffness and thickness Curve elements - Cross sectional area, second moment of inertia, torsional & warping constants, and non-structural mass. Beam cross section geometry and beam properties association maintained (Only Properties related to Nastran preference are currently supported) –Loads and Boundary Conditions Point loads - At nodal positions Pressure loads - Element uniform and element varying pressure loads are supported for loads applied on faces of Volume_3d_Elements and Surface_3d_elements Distributed loads - Element uniform and element varying distributed loads are supported for loads applied on Curve_3d_Elements Single point constraints - Nodal displacements Multi point constraints - Only explicit MPCs are supported Support for constant value LBCs (Only LBCs Which are associated with at least one Load case are exported)

34. MSC.Patran Version 9.5 AP209 Import/Export Coverage (Cont.) –Load Cases Load Cases which have at least one of the supported LBCs are exported –Output Requests Support for multiple jobs (Output requests are supported only for Nastran jobs) –Results Static analysis –Results are supported for elemental stresses, strains, and nodal displacements Normal modes analysis –Modes and nodal eigenvectors (Support is available for only those load cases which are associated with a single result sub case)

35. AP209 ARM Entities Legend a_d_v_r - analysis_design_version_relationship d_d_p_d - design_discipline_product_definition a_d_p_d - analysis_discipline_product_definition g_m_r - geometric_model_representation n_d_s - nominal_design_shape i_d_s - idealized_design_shape f_m_p - fea_material_property d_s - defining_shape a_b_r - advanced_boundary_representation m_s_w_t - manifold_surface_with_topology w_w_t - wireframe_with_topology f_b_r - faceted_boundary_representation n_t_s_a_w - non_topological_surface_and_wireframe ply_p_s -ply_piece_shape p_o_a -ply_orientation_angle p_s_m -ply_stock_material p_l_s -ply_laminate_shape ply_l_t -ply_laminate_table p_l_s_d -ply_laminate_sequence_definition p_p_s -projected_ply_shape l_p_s -laid_ply_shape f_p_p_s -flat_pattern_ply_shape part_l_t -part_laminate_table c_sheet_r -composite_sheet_representation c_a_s -composite_assembly_shape c_a_t -composite_assembly_table c_a_s_d - composite_assembly_sequence_definition z_s_m - zone_structural_makeup %_l_t - percentage_laminate_table t_l_t - thickness_laminate_table %_ply - percentage_ply z_s_m_s_r - zone_structural_makeup_shape_representation e_z_s - edge_zone_shape p_z_s - point_zone_shape d_m - defining_model b_c_z - boundary_curve_zones t_d_g_s - three_d_geometry_set b_sheet_r -beveled_sheet_representation c_s_s_s -cross_section_shape_selection