Structural Analysis Interoperability based on ISO STEP AP209: Scope and status of implementation

Transcription

1 Structural Analysis Interoperability based on ISO STEP AP209: Scope and status of implementation AFNeT Standardization Days Paris, 19 th April 2017 Presented by Albert Lévy (CIMPA, on behalf of Airbus)

2 Content 1. Overview of STEP AP209 edition 2 Context, Scope, Key principles, Benefits, Future developments 2. LOTAR Engineering Analysis and Simulation Working Group (EAS WG) Scope, Technical Approach, Team, Planning, Collaboration with NAFEMS 3. STEP AP209 edition 2 status of implementation LOTAR EAS Pilot Studies, Creation of the CAE Implementor Forum 2

3 3 INTRODUCTION

4 Business needs for structural analysis interoperability Structural Analysis Determination of the effects of loads on physical structures and their components Interoperability The ability to exchange, share, visualize or archive any data between different environments Business needs for structural analysis interoperability - Integration between heterogeneous authoring CAD and CAE applications (i.e. CATIA V5, Creo Parametric, PATRAN, NASTRAN, FLUENT, NX - Thermal, Simulia ) - Visualization of simulation models and results (mesh, fields...) - Long term archiving and retrieval - Data exchange in the extended enterprise - Data migration, between different generations of CAE applications - Simulation for the digital twin 4

5 Generic Structural Analysis process CAD model Solver input Solver output CAD Design Solver Preprocessing Postprocessing Design the CAD model Import CAD model Mesh Assign material & properties Define loads & constraints Request outputs Compute the simulation case defined by the solver input Produce the outputs requested Import and visualize the results (outputs) At each stage, communication between tools can be operated through dedicated direct interfaces à maintenance issues; It is more efficient to proceed through standards data formats 5

6 Cartography of standards / Architecture Framework Process Processes Principle Vocabulary Use cases Information Data representation Application Tools Infrastructure Physical layer 6 This presentation focuses on ISO STEP AP209, a standardized* open** information model *stable, documented **non-proprietary

7 ASD SSG Radar Chart, STEP AP209 component standard Link to ASD SSG Radar Chart ASD SSG monitors and tracks the standards relevant to the European Aerospace and Defence industry for product and ILS information interoperability 7

8 Overview of STEP Application Protocols Process & use cases Concept Simulation Definition Manufacture Support Product Life Cycle Standards for Engineering processes and methods not described Disposal Information AP209 ed3 in dev. AP233ed1 Systems Engineering Multi-disciplinary Analysis & design AP209ed2 AP 242 ed2 Managed Model Based 3D Engineering AP 238ed1 Integrated CNC Machining Suite of AIA - ASD ILS Specs (SX000) Based on PLCS Product Life Cycle Support AP239ed2 AP239 ed3 in dev. (Launch Jan. 2016) AP238 ed2 in dev. (launch: May 2016) An Integrated model for Manufact. Xxx (ed2) Modular STEP standard NON Modular STEP standard Only contained in AP 242 ed2 AP = Application Protocol AP 210ed3 Electronic assembly, interconnect & packaging design Engineering Properties for product design & verification AP235 ed2 in dev. Illustrative view to highlight the interdependancies AP 235ed1 8 STEP AP209 is part of a suite of consistent standards covering the full product life cycle: ISO 10303

9 9 OVERVIEW OF STEP AP209

10 Overview of STEP AP209 edition 2 Multi-Disciplinary Analysis and design PDM STEP AP 209 SDM AP209 integrates 4 domains: CAD, CAE, SDM and PDM SDM CAD CAE PDM : Simulation Data Management : Computer Aided Design : Computer Aided Engineering : Product Data Management CAD CAE Link to STEP AP209 public website 10

11 Scope of STEP AP209 edition 2 Computer Aided Design 3D Solids Surface Lofts Structural Layouts Analysis Geometry Idealized for Loads Idealized for Structures Idealized for Aero Finite Element Models and Analysis Linear Statics Panel Aero CFD Product Data and Metadata Product Structure Analysis Structure Configuration Data Material Specification Simulation disciplines covered today by STEP AP209 ed2 are: ü Structural Finite Element Analysis (Linear Static and Linear Dynamic) ü Computational Fluid Dynamics ü Kinematics 11 STEP AP209 is a key enabler for multidisciplinary analysis information interoperability

12 Design and Analysis within STEP AP209 - STEP AP209 edition 2 «Multidisciplinary analysis and design» is an international standard for sharing, exchange and long term archiving of: engineering design and multi-disciplinary simulation data managed in configuration. Design Analysis - Within STEP AP209, design and analysis have separate but related product definitions, which allows both activities to be independently controlled. - Many types of analyses may be attached to the same product. 12

13 Support documents/guidelines for implementing STEP AP209 ed2 Structure of STEP AP209 ed2 Recommended Practices (v2.0, ): 1. Introduction 2. Using AP 209 ed General 2.2. People and Organizations 2.3. Dates and Times 2.4. Approvals 2.5. Security 2.6. Units of Measure 2.7. Shape 2.8. Parts in AP 209 ed Materials and Properties Retention Analyses in AP 209 ed Identifying Analyses Relating Analysis Shape to Analysis Finite Element Analysis Appendix A Physical File Example Appendix B Units Examples Appendix C Finite Element Model Result Structures Appendix D Directionally Explicit Element Layout Link to AP209 Recommended Practices 13 A tutorial (handbook) for the AP209 standard is in the last stage of preparation Training sessions (including on-line materials) will be developed Aside from the standard itself, documents exist to support the implementation of STEP AP209 by CAE editors

14 Benefits of STEP AP209 - Standardized information model and open format Stable, documented, non-proprietary - Integration with ISO STEP AP242 ed1 Managed model based 3D engineering STEP: comprehensive set of standards for the full product lifecycle - Associativity Design/Analysis Loads and constraints can be applied either to elements of the mesh or to geometric elements (i.e. all the nodes attached to this mesh element) - Data model shared by many simulation disciplines Key enabler for multidisciplinary simulation 14

15 Future developments of STEP AP209 - A Technical Corrigendum is under way Analytical Predictions for strain at specified locations Data Correlation Experimental Strain Gauge Data Mapped to Structural Model - STEP AP209 edition 3 is in early stages of preparation: Proposal to include Correlation between analysis/simulation and testing The name of the standard could evolve: Multidisciplinary design, analysis and testing? The ISO project has not yet been launched: start in 2017? Analytical Pressure Distribution Structural Model Data Correlation Measured Pressure Distribution Mapped to Aero Model Aerodynamic Model Structural testing correlations 15

16 16 LOTAR ENGINEERING ANALYSIS AND SIMULATION

17 LOTAR Engineering Analysis and Simulation Overview on a page Why: In an environment of rapidly changing software and hardware, a general requirement exists for access to and viability of digitally formatted engineering assets over the life of the product Legal drivers Cover certification needs Support litigation Support accident investigations How: Original Business Need Engineering, design & customer support drivers Evaluate changes/improvements Engineer derivatives/conversions Extend payload/range/performance Address customer questions Evaluate damage Capture knowledge Increase business capability Primary Technical Approach Model Results Context Pedigree When & What*: Phase 1 Schedule: Phase 1 Scope: Vehicle-level model & loads employing linear static FEA Identify Business rqts & Use cases Prepare test cases Dev. AP209 rec. practices Conduct Pilot Studies Launch CAE IF Create LOTAR Parts Recovered for review or reuse ISO STEP AP209 ed2 Multi-disciplinary analysis and design 5, 10, 15, 20, 30,, or more years Who: Users & Member companies Requirements PDES, Inc., ProSTEP ivip, AFNeT AP209 ed2 development Players & Roles CAx-IF & CAE vendors Translator development & testing NAFEMS, NIST, more Additional collaboration LOTAR International EAS Working Group Overall project orchestration; User requirements; Test models; LOTAR EAS standard development (NAS/EN xx) 17 *EAS scope is broad. Other analysis types and disciplines to be addressed in subsequent phases

18 LOTAR EAS WG - Overall domain and current scope Phase 1 Scope Structural Analysis Linear, Static, Deterministic Finite element method (h-formulation) Metallic and composite materials Phase 1 Focus Internal loads Total vehicle Recover and reuse previous analysis 18 The engineering analysis and simulation domain is huge; LOTAR EAS Phase 1 is focused on Structural Analysis

19 LOTAR Engineering Analysis & Simulation Working Group (EAS WG) LOTAR EAS WG was created in 2014, co-led by Airbus and Boeing. Link to LOTAR EAS public website Joe Draper Americas Co-leader Boeing Everett, US-WA Rod Dreisbach Boeing - retired Keith Hunten Lockheed Martin - retired Albert Lévy EU Co-leader CIMPA S.A.S. (on behalf of Airbus) Blagnac, FR-N Randy Cigel Boeing Seattle, US-WA Gerrit Rollema Airbus Filton, GB-GLS Chris Johnson Lockheed Martin Fort Worth, US-TX Torben Lindemann Airbus Manching, DE-BY Rodrigo Britto Embraer S/A São José dos Campos, BR-SP Legend Jochen Boy PROSTEP AG Darmstadt, DE-HE Phil Rosche ACCR, LCC Summerville, US-SC Leaders Members Facilitators Jean-Marc Crepel AFNeT Paris, FR-J LOTAR EAS team members 19

20 Memoranda of Understanding (MoU) in the frame of LOTAR EAS MoU between LOTAR EAS and NAFEMS Link to NAFEMS website MoU between AFNet, PDES and ProSTEP ivip 20 Signed 23 June 2016 Scope extension in preparation Signed 7 September 2016

21 21 IMPLEMENTATION OF STEP AP209

22 Implementation of STEP AP 2090 ed2 according to the V cycle Published Dec TBD CAE IF (starts Sept. 2017) AFNeT, PDES Inc., ProSTEP ivip 22

23 LOTAR EAS Pilot Studies - With the support of NAFEMS, LOTAR EAS has invited CAE vendors and service providers to participate in pilot studies - LOTAR EAS has defined 3 pilot studies; the first one is close to completion Pilot Study Test Suite Problem Scope 2 1 Beam FEA input 2 3 Beam FEA input / results Beam FEA input / results round trip Description of LOTAR Activity Translate Native FEA input 1 (MSC Nastran) to ISO STEP AP209 ed2 Part 21 file Translate Native FEA input 1 /results (MSC Nastran) to ISO STEP AP209 ed2 Part 21 file Translate Native FEA input 1 /results (MSC Nastran) to ISO STEP AP209 ed2 Part 21 file and translate ISO STEP AP209 ed2 Part 21 file to Native FEA input/results (MSC Nastran) 1 FEA Input = nodes, elements with associated physical and material properties, applied loads (forces and pressure) and boundary conditions (single point constraints) 2 Test suite includes a beam idealized as a rod, beam, plate, or solid finite elements 23

24 LOTAR EAS Pilot Study #1 Translate native FEA input data to ISO STEP AP 209 ed2 Files 1 Test Models in native FEA format for input Test4 Test3 Test2 Test1 2 Processes (including standalone translators) to consume native FEA input and generate ISO STEP AP209 ed2 file Vendor A Process: consume native input and generate ISO STEP AP209 ed2 file Vendor B Process: Consume native input and generate ISO STEP AP209 ed2 file 3 ISO STEP AP 209 ed2 files Test1_AP209e2_A.stp Test1_AP209e2_B.stp 4 5 Cross-feed the ISO STEP AP 209 ed2 files (and perform loop tests) Processes to consume ISO STEP AP 209 ed2 file (loop test for A=A) Vendor A Process: Consume FEA input ISO STEP AP209 ed2 file (cross-feed test for AB=BA) (loop test for B=B) Vendor B Process: Consume FEA input ISO STEP AP209 ed2 file 24

25 LOTAR EAS Pilot Study #2 Generate ISO STEP AP 209 ed2 Files from native FEA input/results data 1 Test Models in native FEA format for input/results Test4 Test3 Test2 Test1 2 Processes (including standalone translators) to consume native FEA input/results and generate ISO STEP AP209 ed2 file Vendor A Process: consume native input/results and generate ISO STEP AP209 ed2 file Vendor B Process: Consume native input/results and generate ISO STEP AP209 ed2 file 3 ISO STEP AP 209 ed2 files Test1_AP209e2_A.stp Test1_AP209e2_B.stp 4 5 Cross-feed the ISO STEP AP 209 ed2 files (and perform loop tests) Processes to consume ISO STEP AP 209 ed2 file of FEM input/results (loop test for A=A) Vendor A Process: Consume FEA input/results ISO STEP AP209 ed2 file (cross-feed test for AB=BA) (loop test for B=B) Vendor B Process: Consume FEA input/results ISO STEP AP209 ed2 file 25

26 LOTAR EAS Pilot Study #3 Bi-directionally generate ISO STEP AP 209 ed2 Files from native FEA input and results data Conformance testing Test Models in native FEM format for node and element input Processes (including standalone translators) to consume native FEA input/results and generate ISO STEP AP209 ed2 file ISO STEP AP 209 ed2 Part 21 files Vendor A Process: consume native input/results and generate ISO STEP AP209 ed2 file Test1_AP209e2_A.stp Test4 Test3 Test2 Test1 Vendor B Process: Consume native input/results and generate ISO STEP AP209 ed2 file Test1_AP209e2_B.stp 26 Interop. testing Cross-feed the ISO STEP AP 209 ed2 files (and perform loop tests) Processes to consume ISO STEP AP 209 ed2 file and generate native FEM input/results Test Models in native FEM format for input/results should result in equivalent outcome relative to the original input/results (loop test for A=A) Vendor A Process: Consume ISO STEP AP209 ed2 file and generate native input/results (cross-feed test for AB=BA) Test4 Test3 Test2 Test1 (loop test for B=B) Vendor B Process: Consume ISO STEP AP209 ed2 file and generate native input/results Test4 Test3 Test2 Test1

27 LOTAR EAS Pilot Studies Test Suite - LOTAR EAS Pilot Studies are based on 4 ATS models that will require implementation of basic STEP AP209 ed2 data model elements - Models represent 1D, 2D and 3D finite element abstractions of a constant section beam with various boundary conditions and loads - ATS models are identified with ATS + model number + m + version Beam (rectangular prism) models: ATS1m4 : idealized using rod elements ATS2m4 : idealized using bar elements ATS3m4 : idealized using shell elements ATS4m4 : idealized using solid elements Length : 16.0 inch Width : 4.0 inch Height : 2.0 inch Area : 8.0 square inch - So far 2 companies have been selected for participation in the pilot: EPM Jotne and CT CoreTechnologie 27

28 Launch of the CAE Implementor Forum (IF) Link to the CAx-IF website - LOTAR EAS Pilot Studies involve (only) 2 or 3 vendors - The CAE IF will be launched in September 2017 under the infrastructure of the existing CAx-IF - It will be open to all willing CAE vendors and service providers - Initial CAE interoperability test rounds will focus on Structural Analysis interoperability based on STEP AP209 ed2 and will use the same Test Suite as the LOTAR EAS Pilot Studies 2017-Q Q Q Q Q Q2 LOTAR EAS Pilot Study #1 LOTAR EAS Pilot Study #2 Fall CAE IF Round Test #1 LOTAR EAS Pilot Study #3 Spring CAE IF Round Test #2 28 LOTAR EAS Pilot Studies and CAE IF Notional Planning

29 29 CONCLUSION

30 Summary / Next actions Summary - The business needs for Structural Analysis interoperability (exchange, share, visualize and archive) are to be covered by an open standard - STEP AP209 ed2 Multidisciplinary Analysis and Design is part of a consistent set of standards for the full product lifecycle - STEP AP209 ed2 offers key capabilities to enable associativity between Design and Analysis and multidisciplinary interoperability - LOTAR Engineering Analysis and Simulation Working Group is composed of an international team; Phase 1 of activities focuses on Structural Analysis and bases its works on STEP AP209 ed2 - To speed up the development of STEP AP209 ed2 interfaces, LOTAR EAS has launched Pilot Studies Next actions - Run LOTAR EAS Pilot Studies - Launch the CAE Implementor Forum - Develop tutorial and trainings to STEP AP209 ed2 - CAE vendors and service providers to get involved in the development of STEP AP209 ed2 interfaces 30

31 31 BACKUP SLIDES

32 STEP AP209 website 32

33 33 LOTAR EAS website

34 Comparison of Pilot Study, CAE-IF and Benchmark testing Maturity CAE-IF Benchmark Pilot Study 4Q2016 3Q2017??? Time Who? Pilot CAE-IF Benchmark Any member of PDES, Inc., ProSTEP ivip or AFNeT with a functional ISO STEP AP209 ed2 product 2~3 vendors with a prototype ISO STEP AP209 ed2 product Independent third party testing COTS ISO STEP AP209 ed2 products What? Why? When? Unit tests with limited scope, but enough to exercise the ISO STEP data model Proof of concept, allowing for further refinement of recommended practices and requirements. After pilot study test plan is ready and pilot study candidates have been selected Use cases based on requirements used to define LOTAR standards Develop and mature product in a controlled forum for collaboration After use case tests are defined and initial recommended practices are complete Where? At vendor sites with regular coordination At vendor sites, with regular coordination and test files shared through sandbox, quarterly face-to-face meetings How? PDES, Inc., ProSTEP ivip and AFNeT coordinate testing, EAS WG provides test models and criteria PDES, Inc., ProSTEP ivip and AFNeT coordinate testing, EAS WG provides test models and criteria A collection of tests that conform to best practices in the industry To independently verify and validate the COTS products with analysis representative of intended usage in the industry After planning, funding, resources and COTS products become available. At an independent test facility with up-to-date production versions of COTS software Third party defines a plan, funds and monitors the work 34