Optimization of an Image-Based Experimental Setup for the Dynamic Behaviour Characterization of Materials
The present work aims at identifying an elastic-viscoplastic material constitutive model over a wide strain and strain-rate range (up to 0.1 and 1000 s−1 respectively), using the so-called Virtual Fields Method. To define the experimental campaign, a design process has been set. It relies on the numerical optimization of the setup – notably the specimen shape, the impact conditions and the measurement resolution (time and space) – with respects to user-defined criteria. Finally, the selected configuration ensures an accurate and robust identification.
KeywordsVirtual Fields Method Impact Optimization Viscoplasticity Johnson-Cook
- 2.Johnson, G., Cook, W.: Proceedings of the 7th International Symposium on Balistics, pp. 541–547. The Hague, The Netherlands (1983)Google Scholar
- 3.Rossi, M., Pierron, F.: Int. On the use of simulated experiments in designing tests for material characterization from full-field measurements. International Journal of Solids and Structures. 49, 420–435 (2012)Google Scholar
- 4.Lukíc, B., Saletti, D., Forquin, P.: Use of simulated experiments for material characterization of brittle materials subjected to high strain rate dynamic tension Philosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences. The Royal Society. 375, (20160168), (2016)CrossRefGoogle Scholar