#	Pagina
attuale pagina	/open-h2020/projects/207744/results.html

Report

Teaser, summary, work performed and final results

Periodic Reporting for period 1 - MUMPS (Next Generation Digital Mock-Ups for Multi-Physics Simulation)

Teaser

Summary

Computational Simulation is essential to meet these challenges, but setting up complex numerical simulations for large assembly structures is extremely time-consuming and requires highly-skilled engineers. Even though solve time is often used as a key performance indicator, model preparation is typically orders of magnitude larger that the solution time.

The main objective of the MUMPS project was to explore the basis of the next generation of Digital Mock-Ups, where geometric models are structured to cover the entire design world, not only the physical parts but also the adjacent fluid domains.

To link the geometric models, the interfaces between regions in the design space to the high-level modelling and idealisation decisions, we proposed a knowledge-based CAE framework. In this framework, to represent the next generation Digital Mock-Up, an ontology for defining simulation intent has been developed which incorporates two key capabilities, cellular modelling and equivalencing. Cellular modelling introduces the concept of cells, which subdivide the 3D space appropriately, and to which simulation attributes can be attached. Equivalencing maintains the link between different representations of the cells required for different analyses throughout the analysis lifecycle.

Firstly, an analysis tool based on relational machine learning has been developed to help analysts and designer to speed up the tedious tasks to identify and isolate the components of interest for the analysis of the CAD assemblies extracted from the PLM system. The user can identify duplicate components, or correct inconsistent models with misaligned parts or with poor-quality B-Rep geometry.

Secondly, the consistent CAD assemblies are transferred into a cellular model where information on cell geometry is linked to simulation attributes and meshing strategies through the ontology concepts and relations.

Finally, the enriched cellular model defines the next generation Digital Mock-Ups. The analysts or designers can then request the cells of interest from their CAD/CAE systems. They can use pre-defined ontology rules to capture the high-level of modelling and idealisation decisions required to set up a fit-for-purpose analysis model.

Applying the ontology rules with the reasoner enriches the CAE-oriented knowledge model and makes it available for the various CAD/CAE packages across the simulation departments. Using an ontology approach as the simulation intent framework makes it independent of CAD/CAE packages and allows the generated models to be shared by multiple simulation domains. This provides a mechanism to maintain multiple models at different levels of detail and fidelity and exploit the links between them.

Work performed

Jan17 Feb17:
Workshop visit of Grenoble partner in QUB: 17-Jan-17
3 days workshop in RR (Rolls-Royce). Discussions with methods and tools specialist
Link between Grenoble INP software SALOME and NX software used in QUB. Demonstration of the first transfer of data between both software
Identification of first functional designation of components: O-ring seal non-deformed and bearing
The main workflow for MUMPS concerns thermo-mechanical analysis of internal air system, automation of BCs definition and application

Mar-Apr17
1 week Training in RR
Presentation of MUMPS project to EDF and Airbus
Work mainly on cyclic symmetry extraction from CAD components
Work on generation of 2D sketch from 3D axisymmetric models

May-Jun17
Work on cyclic symmetry extraction, test on various use-cases
Work on demonstrator showing automatic creation of simplified representation of fasteners and bearing

Jul-Aug17
Visit Airbus Toulouse July 12th
Presentation of MUMPS to Airbus teams: Thermal, Structure, CFD
IMR paper accepted. Symmetry-based decomposition for meshing quasi-axisymmetric components
Visit to RR Discussions with PLM and CAE experts, extraction of three use-cases

Sep-Oct17
Participation to the ECCOMAS Young Investigator conference Milan, Italy
Participation to the International Meshing Roundtable Barcelona, Spain
Development of a first demonstrator in the NX software
Visit to Airbus Bristol. Discussion on Mumps objectives, recent progress

Nov-Dec17
Participation to the Airbus Dipart conference Bristol, UK
Communication of the recent progress on the link with the assembly reasoning tool of Grenoble/INRIA
Discussions with Airbus engineers on possible collaborations on simulation management internal projects
D axisymmetric models from 3D B-Rep CAD models. This work is inline with Rolls-Royce current difficulty to set-up 2D FE models

Jan-Fev18
Visit to RR Derby
Demonstration of the use of an ontology-based application to capture simulation intent
Demonstration of the 3D to 2D developed tool
Development of an ontology-based framework to capture CAE modelling rules

Mar-Apr18
Submission of a paper to the Journal of Engineering Design (special issue Ontological engineering for supporting semantic reasoning in design)
Visit to RR Bristol
Worked with RR engineer to demonstrated the capability of the 3D to 2D application.
Participation to an ERC writing workshop with Yellow Research in Queen\'s University Belfast
Worked on RR use-cases to verify the applicability of the ontology-based framework
2 weeks visit to Dalian University of Technologies (China) Founded by QUB Faculty of Engineering and Physical Sciences
Presentation of the ontology-based framework in RR Derby on the Rolls-Royce use-cases

May-Jun18
Mini-symposium at the ECCOMAS ECCM-ECFD 2018 conference: A mini-symposium was organised by the researcher jointly with Grenoble University

Jul-Aug18
Worked on relational learning following the recommendation of Prof. Yingzhong Zhang from Dalian university
One week visit to Grenoble University
Worked on the definitions of the simulation intent concepts and relations
Enhanced the link with the platform developed in Grenoble
Participation to the CAD and Applications conference in Paris 2018

Sep-Oct-Nov18
Participation to a one MSCA career progression day in Dublin organised by the Irish Research Council
2 days visit to RR Derby to show the results of WP3 and the work on relational learning
Participation at the DiPart Airbus conference 26-27-28 Nov
Writing of a paper to submit at the Solid and Physical Modelling conference 2019

Final results

The impact objectives of the MUMPS project were (a) to place this project as a reference to rethink the use of DMU as a key differentiator against international aerospace competitors, (b) to put the MUMPS stakeholders as leaders in the research field of assembly pre-processing for simulation, (c) to establish industrial/academic relationships to place the researcher and the host in an ideal position to develop concrete further projects with other research laboratories and industrial associates.

The link with industries and academic was strengthen by the organisation of 2 workshops; multiple secondments periods at Rolls-Royce UK, 2 academic visits (1 week at Grenoble University and 2 weeks at Dalian University), the participation in 4 international conferences and the submission/publication in 3 scientific journals.
Industrial secondment at Rolls-Royce. As described in section 2.1 of the DoA, the researcher undertook industrial secondments at Rolls-Royce Derby and Bristol (UK).
This project opened opportunities to develop a new project with Rolls-Royce to automate the application of boundary conditions on large assembly models.