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On the topology design of an innovative heterogeneous mechanical test for material mechanical characterization
- 1. On the topology design of an innovative heterogeneous mechanical test for material mechanical characterization Centre for Mechanical Technology and Automation (TEMA), Department of Mechanical Engineering, University of Aveiro, Portugal Univ. Bretagne Sud, UMR CNRS 6027, IRDL, F-56100 Lorient, France Mafalda Gonçalves, Sandrine Thuillier, António Andrade-Campos 1 2 1 2 1 2nd year Doctoral Program in Mechanical Engineering
- 2. Research challenges Industry requirements - Costs - Time - Material waste Virtual manufacturing processes Numerical simulation Accurate material behavior reproduction Framework
- 3. Research challenges Material characterization Accurate material behavior reproduction Experimental data To provide information about the material behavior Standard mechanical tests Exhaustive testing task Heterogeneous mechanical tests It hasn’t been found yet a mechanical test that by its own is able to characterize accurately a complex material behavior
- 4. Research methods Test design methodology Uniaxial tensile loading test 𝐅 Specimen geometry designed by topology optimization ▪ Find the optimal material distribution ▪ 35% of the total volume Nonstandard test configuration Heterogeneous mechanical fields ▪ High diversity of information about the material from a single test
- 6. Next steps Current state and impact ▪ Test validation I’m here! Journal paper M. Gonçalves, A. Andrade-Campos, B. Barroqueiro, submitted. Conference presentation M. Gonçalves, A. Andrade-Campos, J.A. Dias-de-Oliveira, XVI International Conference on Computational Plasticity, 7-9th September, Barcelona, Spain. Conference paper M. Gonçalves, S. Thuillier, A. Andrade-Campos, 25th International Conference on Material Forming, ESAFORM 2022, 27-29th April, Braga, Portugal. Conference paper M. Gonçalves, S. Thuillier, A. Andrade-Campos, 41st International Deep Drawing Research Group annual conference, IDDRG 2022, 7-9th June, Lorient, France. 1st year 2nd year 3rd year ▪ Study on optimal boundary conditions and designs for the test ▪ Introduction of nonlinearities in the design procedure ▪ Elastoplastic framework for the material behavior ▪ Real measurement errors in the design procedure
- 7. Concluding remarks Mechanical test with complex geometry Efficient and accurate material characterization High diversity of information from heterogenous mechanical fields
- 8. Thank you! Any questions? mafalda.goncalves@ua.pt This project has received funding from the Research Fund for Coal and Steel under grant agreement No 888153. The authors also acknowledge the financial support of the Portuguese Foundation for Science and Technology (FCT) under the project PTDC/EME- APL/29713/2017 by UE/FEDER through the programs CENTRO 2020 and COMPETE 2020, and UID/EMS/00481/2013-FCT under CENTRO-01-0145-FEDER-022083. M. Gonçalves is grateful to the FCT for the Ph.D. grant Ref. UI/BD/151257/2021. Acknowledgments 2nd year