Overview of STEP AP209 for multi disciplinary analysis interoperability and associated CAE Implementer Forum By Jean-Marc CREPEL, Associated CAE Expert, AFNeT May 17 & 18, 2018 (Paris) – team@afnet.fr - http://standardizationday.afnet.fr/ - ‹1›

CAE-IF process and roadmap Agenda STEP AP209 overview STEP AP209 ecosystem CAE-IF process and roadmap May 17 & 18, 2018 (Paris) – team@afnet.fr - http://standardizationday.afnet.fr/ - ‹2›

Why standards are needed ? Benefits from the digital twin for : Design process Manufacturing Plant layout Maintenance From the digital mockup to the digital twin : More data More info systems More teams Longer time for archiving Need for interoperability through a format independent of the originating IT for… Sharing data Exchanging data Retrieving data Reusing data

STEP AP 209 : Multidisciplinary analysis and design AP 209 is a ISO standard for sharing, exchange, retrieve and reuse of information between the iterative design and analysis stages of the product life cycle. All AP 242 (Managed Model Based 3D Engineering) is a subset of AP 209 Functionalities covered today by AP 209 (ed2): Product definition Product structure and 3D shapes Configuration control information Material specifications & properties CAE disciplines Finite element data (linear statics and modes) Computational Fluid Dynamics (based on CGNS Std.) Kinematics analysis

STEP AP209 : CAD to CAE Shape Management STEP AP209 supports the management of: Nominal Design Shape (Original CAD Geometry) Idealized Analysis Shape(s) (Processed CAD Geometry) Analysis Shape(s) (FEA meshes) STEP AP209 supports Product and Analysis Structures Each with their own versions Can be related to each other All you want to know at : http://www.ap209.org/ Allows Analysis to revise Independently of Design Part Analysis Analysis Design Version Relationship Assembly Part Version Analysis Version Design Documents Analysis Documents Nominal Design Shape Idealized Analysis Shape Analysis Model Shape

CAE-IF process and roadmap Agenda STEP AP209 overview STEP AP209 ecosystem CAE-IF process and roadmap May 17 & 18, 2018 (Paris) – team@afnet.fr - http://standardizationday.afnet.fr/ - ‹6›

LOTAR project “On A Page” <Titel> LOTAR project “On A Page” LOTAR is an international consortium of Aerospace manufacturers Prime objective is creation and deployment of the EN/NAS 9300 series standard for long-term archiving and retrieval of digital data, based on standardized approaches and solutions. Seven LOTAR Working Groups at present The objective of the LOTAR EAS Working Group is to develop, publish and maintain standards-based mechanisms for archiving and retrieval of Engineering Analysis and Simulation information that can be read and reused throughout the product lifecycle, independent of changes in the Information Technology (IT) application environment originally used for creation.

The “round-trip” of an EAS Archive to/from Long-term Storage <Titel> The “round-trip” of an EAS Archive to/from Long-term Storage Archive Source system Retrieve and validate Recovered FEA for review or reuse Pass Yes Is the recovered FEA functionally equivalent to the original? Original FEA AP209 ed2 file Metadata, input data & results AP209 ed2 translator The translator generates data to compare to validation properties during translation from STEP to native Native FEA Data may be added to the archive FEA Solver Translated input data New results from translated input data Metadata, input data & results AP209 ed2 translator AP209 ed2 file Translated results from original FEA Equivalent outcome? The translator generates validation properties during translation from native to STEP Fail No Ingest Access Storage Vault Target system Long Term Archival and Retrieval (LOTAR)

CAE-Implementor Forum “On A Page” Joint testing forum hosted by PDES, Inc., prostep ivip, and AFNeT Composed of CAD and CAE vendors as well as translation and validation software developers providing STEP translators Closed group (sandbox) allowing implementors to develop and test new approaches in a trusted environment Main goals : Accelerate CAx translator development and ensure that users' requirements are satisfied Implement functionality for today's needs and identify functionality for tomorrow's needs Increase user confidence by providing system and interoperability testing Avoid roadblocks by establishing agreed upon approaches Ensure new functionality does not adversely impact existing implementations

Collaboration scheme Communication Introduce new users, solution providers & industrial domains LOTAR EAS standards Education & Best practices on STEP AP209 Interoperability test rounds results Requirements Interoperability test rounds results Interoperable solutions Associations supporting LOTAR EAS WG and CAE-IF

AP209 related document typology ISO standard Recommended Practices Handbook Owner ISO/TC 184/SC 4 Industrial data CAE-IF Objective Provide information requirements and data model for AP209 Guide the implementation of AP209 Provide semantics to AP209 data model Facilitate understanding of AP209 Accelerate implementation of the standard Access Public / to buy CAE-IF members or Public /free access Tableau classification simplifié (AL)

NIST STEP File Analyzer and Viewer Generates a spreadsheet or CSV file from a Part 21 file Simplifies inspecting information at entity and attribute level Viewer for CAD geometry (B-Rep and tessellated) with PMI Viewer for AP209 Finite Element Models Boundary Conditions Loads Results (e.g. Displacements) More information and download at: https://doi.org/10.18434/M39886

NIST STEP File Analyzer and Viewer : AP209 Unit Test Case

NIST STEP File Analyzer and Viewer : AP209 Example

STEP AP209 ecosystem STEP AP209 ISO CAE-IF LOTAR NIST NAFEMS …

CAE-IF process and roadmap Agenda STEP AP209 overview STEP AP209 ecosystem CAE-IF process and roadmap May 17 & 18, 2018 (Paris) – team@afnet.fr - http://standardizationday.afnet.fr/ - ‹16›

CAE-IF testing methodology Workshop Preparation based on: Test suite selection Test environment Rec. Practise update Preparation phase 3 months Workshop Translation based on: Current EXPRESS / XML Schemas Latest (draft) Recommended Practices Test Case definitions Translate to STEP Checks performed (1/2): Syntax and Structure (conformance to schema) Semantics (conformance to Rec. Practices) Perform STEP file checks and report findings 3 months Checks performed (2/2): Translation results consistancy (statistics, validation properties) Participants access and process STEP files; report results Participants resolve issues during the test rounds Detailed review at meeting Workshop

CAE-IF trusted Test Environment Global results statistics (publically available) Detailed results comparison and analysis (CAE-IF participants only) ROG scale : G: Successful exchange O :Problem but may be usable R: Exchange failed

CAE-IF roadmap Target Schedule Explore FEA functionalities Process round trip Process vehicle level models Schedule 2 test rounds per year 1st test round started July, 17 Explore FEA functionalities Explore model complexity Explore FEA process May 17 & 18, 2018 (Paris) – team@afnet.fr - http://standardizationday.afnet.fr/ - ‹19›

Complexity / Functionalities matrix Simple Models Advanced models Vehicle level models level 0 level 1 level 2 level 3 FEA inputs Discretized geometry Coordinate Systems Model dimension / FEA analysis type 3D FEA analysis   2D axisymetric FEA analysis 2D plan stresses/strains FEA analysis Nodes Node sets Elements & element properties Elements 0D Elements 1D R1S, R2S Elements 2D Elements 3D Element order Linear Quadratic Cubic Material data Metallic Material data Composite Material data Applied loads and BC Applied loads Lumped (Nodal) forces & moments Distributed linear forces (& moments) Distributed surfacic forces (& moments) Distributed volumic forces (& moments) Other load conditions Boundary conditions (BC) fixed BC (=0) R2S imposed BC (.NE. 0) FEA outputs Primary results Displacements /Rotation Derivative results Strain results Stress results Element internal forces Other derivative outputs BC constraint forces (vector) Grid point force balance data Meta data Meta Data High-Level Product Information Units Single function. tests Mixed function. tests Full function. test Status In progress Considering Targeted May 17 & 18, 2018 (Paris) – team@afnet.fr - http://standardizationday.afnet.fr/ - ‹20›

Explore FEA process Input FEA data (native) CAESAR Input native statistics Input STEP (native) Input STEP (native) Input target statistics Input STEP (target) Input STEP (target) CAE solver « A » Done Status Delivered by CAE-IF participants

Explore FEA process Output FEA data (native) Input FEA data (native) CAESAR Input/ Output native statistics Output STEP (native) Input STEP (native) Output STEP (native) Input STEP (native) Output target statistics Output STEP (target) Input STEP (target) Output STEP (target) Input STEP (target) CAE solver « A » In progress Status Delivered by CAE-IF participants

Explore FEA process Output FEA data (native) Input FEA data (native) CAESAR Input/ Output native statistics Output STEP (native) Input STEP (native) Output STEP (native) Input STEP (native) Output target statistics Input target statistics Input STEP (target) Input STEP (target) Output STEP (target) Output FEA data (rerun) Input FEA data (regenerate) Output STEP (target) Output FEA data (rerun) Input FEA data (regenerate) Considering Status CAE solver « B »

As a summary Integrating STEP AP209 into the engineering process will Enable exchange and archival of EAS data as well as CAD data Store data independently from the originating IT system Support capturing meta data and properties, and link between domains The CAE Implementor Forum Offer a trusted environment for AP 209 developers to test new approaches Deliver test suites oriented to the user needs Contribute to create documents and tools to support the implementation of the AP209 standard

Q & A session Yes, you can join us … Contact : Jean-Marc CREPEL : jean-marc.crepel@afnet.fr AFNeT website : www.afnet.fr CAx-IF website : www.cax-if.org

Thank you May 17 & 18, 2018 (Paris) – team@afnet.fr - http://standardizationday.afnet.fr/ - ‹26›

May 17 & 18, 2018 (Paris) – team@afnet. fr - http://standardizationday