Abstract
The aim of this work is to identify the local behavior of a mechanical sample’s surface layers from the instrumented indentation test and through optimization techniques. These tools are used to automate the search of the parameters of the mechanical constitutive law used in a finite element (FE) calculation and to reduce the number of calculations necessary to solve the problem of calibration. The experimental database includes mechanical responses of instrumented indentation performed on aluminum Alloy AA2017 and AISI 316L austenitic stainless steel samples. The Hooke and Jeeves iterative optimization method is used due to its efficiency, cost of calculation and precision. The procedure predictive aptitude is validated by determining correctly the behavior law of the aluminum alloy sample. The modification of the local material behavior induced by electrical discharge machining to the AISI 3016L sample is highlighted by identifying the tensile curves of different surface layers using the proposed procedure.
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Ben Moussa, N., Marzougui, O., Ghanem, F. (2019). An Inverse Calculation of Local Elastoplastic Parameters from Instrumented Indentation Test. In: Benamara, A., Haddar, M., Tarek, B., Salah, M., Fakher, C. (eds) Advances in Mechanical Engineering and Mechanics. CoTuMe 2018. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-19781-0_7
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DOI: https://doi.org/10.1007/978-3-030-19781-0_7
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