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A nonlinear topology-based optimization approach for the design of a heterogeneous mechanical test
- 1. SUSTAINABLE MANUFACTURING SOLUTIONS A nonlinear topology-based optimization approach for the design of a heterogeneous mechanical test Mafalda Gonçalves, Sandrine Thuillier, António Andrade-Campos Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Portugal Univ. Bretagne Sud, UMR CNRS 6027, IRDL, F-56100 Lorient, France 1 2 TEchMA 2022 - 5th International Conference on Technologies for the Wellbeing and Sustainable Manufacturing solutions 1 1 2
- 2. SUSTAINABLE MANUFACTURING SOLUTIONS Sheet metal forming
- 3. SUSTAINABLE MANUFACTURING SOLUTIONS Material waste Time Costs Industry requirements Virtual manufacturing Numerical simulation
- 4. SUSTAINABLE MANUFACTURING SOLUTIONS Accurate reproduction of material behavior Material constitutive models Experimental data
- 5. SUSTAINABLE MANUFACTURING SOLUTIONS Classical mechanical tests ▪ Homogeneous strain fields ▪ Limited data can be extracted ▪ Large number of tests required Time-consuming and expensive
- 6. SUSTAINABLE MANUFACTURING SOLUTIONS How can we make this process more efficient?
- 7. SUSTAINABLE MANUFACTURING SOLUTIONS Heterogeneous mechanical tests Classical mechanical tests [1] [2] [3] [4] [5]
- 8. SUSTAINABLE MANUFACTURING SOLUTIONS ? A single test rich enough to characterize accurately a complex material behavior has not been found yet. Classical mechanical tests
- 9. SUSTAINABLE MANUFACTURING SOLUTIONS Heterogeneous stress field Design of an innovative mechanical test Topology-based optimization approach Nonlinear behavior Material nonlinearities (elastoplastic material behavior) Geometric nonlinearities
- 10. SUSTAINABLE MANUFACTURING SOLUTIONS Uniaxial tensile loading test Fin Test design
- 11. SUSTAINABLE MANUFACTURING SOLUTIONS Fin Test design
- 14. SUSTAINABLE MANUFACTURING SOLUTIONS Results Equivalent plastic strain ▪ Large area in the plastic regime ▪ The test can stand high strains which is important for the calibration of the elastoplastic material behavior
- 15. SUSTAINABLE MANUFACTURING SOLUTIONS Results Principal strains ratio ▪ Heterogenous stress states distribution at the moment just before rupture ▪ Tension, compression and shear
- 16. SUSTAINABLE MANUFACTURING SOLUTIONS Conclusions ▪ Design of a mechanical test Numerical simulations Development processes ▪ Material and geometric nonlinearities ▪ Heterogeneous stress fields ▪ Higher quality and quantity of information about the material behavior ▪ Topology optimization
- 17. SUSTAINABLE MANUFACTURING SOLUTIONS 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. Thank you! Any questions? Acknowledgments
- 18. SUSTAINABLE MANUFACTURING SOLUTIONS A nonlinear topology-based optimization approach for the design of a heterogeneous mechanical test Mafalda Gonçalves, Sandrine Thuillier and António Andrade-Campos Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Portugal Univ. Bretagne Sud, UMR CNRS 6027, IRDL, F-56100 Lorient, France 1 2 TEchMA 2022 - 5th International Conference on Technologies for the Wellbeing and Sustainable Manufacturing solutions