1. AFNeT Standardization Days 2017 - Paris
Implementor Forums : CAx-IF and CAE-IF to accelerate interoperability solutions availability
By Jean-Marc CREPEL, Associated CAE Expert, AFNeT
AFNeT Standardization Days Paris
April 19 & 20, 2017

2. Primary Technical Approach
The LOTAR project
Seven LOTAR WGs
LOTAR EAS WG
Goals and Objectives
…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.
ISO STEP AP209 ed2
5, 10, 15, 20, 30,…, or more years
Model
Results
Context
Pedigree
Primary Technical Approach
Original
Recovered for review or reuse
“Multi-disciplinary analysis and design”
Source : LOTAR EAS WG
AFNeT Standardization Days 2017 – ParisSource
April 19 & 20, 2017

3. Motivation for using Standards in CAE and other Cax domains
Interoperability for Multiphysics / Multi tools Analysis and Extended Enterprise exchanges
Long Term Archive and Retrieve
Knowledge management and Reuse
Legal needs
Certification
Litigation
Accident investigation
Business needs
Evaluate changes
Evaluate damage
Address customer questions
Evaluate new conditions and mission requirements
Engineer modifications
Engineer derivatives
Capture knowledge
Exchange data
An archive information package must be created to support these items, used for 2 main purposes:
retrieve
reuse
analysis and simulation data.
LOTAR supports the needs by providing an enduring data archive.
Source : LOTAR EAS WG
AFNeT Standardization Days Paris
April 19 & 20, 2017

4. STEP AP 209 ed.2 : Multidisciplinary analysis and design
STEP AP209 is a standard for sharing, exchange and long term archiving of information between the iterative design and analysis stages of the product life cycle.
Disciplines covered today by AP209 ed2 :
Structural Finite Element Analysis;
Computational Fluid Dynamics;
Kinematics.
As a first step CAE-IF focus on Structural FE linear quasi-static Analysis using metallic and composites material types
CAE-IF initiative is expected to accelerate STEP AP209e2 processor development in CAE domain and promote usage through users community
All AP242 (Managed Model Based 3D Engineering) is a subset of AP209 ed2
AFNeT Standardization Days Paris
April 19 & 20, 2017

5. CAx Implementor Forum (CAx-IF)
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
Launched in 1999, by merging previous PDES, Inc. and ProSTEP iViP efforts. Since then, 39 test rounds have been completed focused on CAD domain. CAE domain test rounds to start on Sept, 2017.
Mission is to meet industry’s needs by developing and testing standards based interoperable products
AFNeT Standardization Days Paris
April 19 & 20, 2017

6. Goals of the CAx Implementor Forum
Accelerate CAx translator development
Ensure that users' requirements are satisfied
Implement functionality for today's needs
Identify functionality for tomorrow's needs
Avoid roadblocks by establishing agreed upon approaches
Increase user confidence by providing system and interoperability testing
Ensure new functionality does not adversely impact existing implementations
AFNeT Standardization Days Paris
April 19 & 20, 2017

7. CAx-IF testing methodology
Preparation based on:
Test suite selection
Test environment
Rec. Practise update
Preparation phase
Translation based on:
Current EXPRESS / XML Schemas
Latest (draft) Recommended Practices
Test Case definitions
Translate to STEP
Checks performed:
Syntax and Structure (conformance to schema)
Semantics (conformance to Rec. Practices)
Perform STEP file checks and report findings
Participants access and process STEP files;
report results
Participants resolve issues during the test rounds
Detailed review at meeting
AFNeT Standardization Days Paris
April 19 & 20, 2017

8. CAx-IF Test Round Breakdown
Two rounds per year:
CAD : March – Sept. / Sept. – March
CAE : June – Dec. / Dec. - June
Evaluation
Preparation
Evaluation of results
Meeting preparation (collection of discussion topics…)
2 weeks
Meeting
Data import
Results collection
Import of submitted test data
Collection of results
Pre-meeting resolution of issues
6 weeks
Conference Call
Implementation
Data submission
Update of implementations
Realization of test cases
Provision of test data (STEP files and statistics)
Transition
Meeting wrap-up (minutes etc.)
Creation/Update of Recomm. Practices
Preparation for test round (Test Suite, Test Environment…)
12 weeks
AFNeT Standardization Days Paris
April 19 & 20, 2017

9. CAx-IF Online Test Environment
AFNeT Standardization Days Paris
April 19 & 20, 2017

10. From pilot tests to operational solutions
Maturity
Unit Tests
(Pilot Study)
Use Case Tests
(CAE-IF)
Benchmark Tests
(Benchmark)
Time
4Q2016
3Q2017
???
Unit test models
To test single functionalities
Ultra-light glider model (ULG)
Representative of model, load cases and results for a total vehicle quasi-static linear internal loads finite element model
Additional load cases available
Coarse mesh FEM representative of semi- monocoque construction
Simulation Data Management (SDM) elements such as metadata to establish pedigree
Publically available
Benchmark Tests
Use Case Tests
Unit Tests
complexity
Number of tests
Symmetric pull-up manoeuver
April 19 & 20, 2017
Source : LOTAR EAS WG
AFNeT Standardization Days Paris
April 19 & 20, 2017

11. LOTAR EAS WG planning for Phase 1 and hand over to CAE-IF
CAE – IF Round #1S
Based on unit tests
CAE – IF test rounds
Increasing complexity :
Element combination
Loads combination
Dynamic Analysis …
Up to vehicule level
Albert

12. AFNeT Standardization Days 2017 - Paris
Q & A
AFNeT Standardization Days Paris
April 19 & 20, 2017