A hybrid VFM-FEMU approach to calibrate 3D anisotropic plasticity models for sheet metal forming

A hybrid VFM-FEMU approach to calibrate 3D anisotropic plasticity models for sheet metal forming


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Abstract. Recently, inverse methods such as the Virtual Fields Method (VFM) or the Finite Element Model Updating (FEMU), coupled with a full-field measurement technique, have been distinguished as efficient strategies for the calibration of complex plasticity models [1]. The use of heterogeneous strain fields, in fact, offers a larger amount of material information compared to the classical standard test, enriching the identification process and, in general, reducing the experimental effort for the calibration [2]. Here, an inverse identification framework is proposed for the calibration of a full-scale anisotropic plasticity model. The inverse identification procedure employs full-field information from two main experiments: a tensile test on double notched specimens for the calibration of the coefficients expressing the planar anisotropy, and an innovative Iosipescu-like test for the through-thickness shear ones. A hybrid approach is used with the VFM employed to identify the planar coefficients and the FEMU for the through thickness ones.

Inverse Methods, 3D Anisotropic Plasticity, Full-Field Measurements

Published online 4/19/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: ROSSI Marco, LATTANZI Attilio, AMODIO Dario, A hybrid VFM-FEMU approach to calibrate 3D anisotropic plasticity models for sheet metal forming, Materials Research Proceedings, Vol. 28, pp 1203-1210, 2023

DOI: https://doi.org/10.21741/9781644902479-131

The article was published as article 131 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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