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Identification of material behavior via a Finite Element Model Updating strategy
Author(s) -
Schmaltz Stefan,
Willner Kai
Publication year - 2014
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201410207
Subject(s) - finite element method , identification (biology) , kinematics , code (set theory) , software , least squares function approximation , computer science , iterative method , inverse , algorithm , inverse problem , experimental data , mathematics , structural engineering , mathematical optimization , engineering , set (abstract data type) , mathematical analysis , physics , geometry , statistics , botany , classical mechanics , estimator , biology , programming language
In this paper an inverse and iterative method for the identification of material behavior is presented, based on the Finite Element Model Updating (FEMU) strategy. The FE simulations are performed with a commercial FE software code, using a self‐implemented elastic material model at finite strain. The iterative identification procedure is based on an experimental test (numerical) whose measured kinematic values are compared to the corresponding simulated ones. Through an optimization algorithm the material parameters are varied in a way that the least‐squares sum of the kinematic values is minimized and the optimal material parameters yielding the material behavior are identified. (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)