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Communication Dans Un Congrès Année : 2017

A procedure for ductile damage parameters identification by micro incremental sheet forming

Résumé

Incremental sheet forming is an important process that allows versatile parts without specific tools [1]. The micro-incremental sheet forming process (μSPIF) is the miniaturization of the classical single point incremental sheet forming process (SPIF).After a brief presentation of the specific properties of the μSPIF process, the ability of this technique to identify the ductile damage properties of the material under severe deformation process is presented [2]. Micro incremental sheet forming is then investigated as a method to identify the material parameters of a Lemaitre's ductile damage evolution law. The identification procedure is based on the comparison between numerical simulations of μSPIF tests [3] and experimental data [4]. The error function to be minimized is initially computed as a L2-norm of the error between numerical and experimental forming forces, then after extended by full field measurements. A parameter sensitivity analysis of the numerical model is performed. An identifiability method, based on that proposed by Richard et al. [5] for indentation tests is used to quantify the influence of each data and demonstrate the meaningful mechanical properties obtained. Different numerical tests (line tests, indentation tests, truncated shape, Meuwissen tests and Out-of-Plane testing procedure by T. Pottier [6]) are also investigated.
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Dates et versions

hal-02131283 , version 1 (16-05-2019)

Identifiants

  • HAL Id : hal-02131283 , version 1

Citer

Gemala Hapsari, Ramzi Hmida, Fabrice Richard, Sébastien Thibaud, Pierrick Malecot. A procedure for ductile damage parameters identification by micro incremental sheet forming. International Conference on Sheet Metal, Apr 2017, Palermo, Italy. ⟨hal-02131283⟩
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