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Model adaptivity for industrial application of sheet metal forming simulation

  • finite element simulation of sheet metal forming, shell elements are widely used. The limits of applicability of the shell elements are sometimes disregarded, which leads to an error in predictions of important values such as springback geometry. The underlying kinematic assumptions of the shell elements do not hold where the thickness of In the metal sheet approaches the value of the radius of curvature. Complex three-dimensional material behavior effects cannot be represented precisely as the result of the simplified kinematics. Here we present a model adaptivity scheme based on a model error indicator. The model-adaptive technique presented in this paper aides to resolve only the critical areas of the structure with a three-dimensional discretization while keeping reasonable computational cost by utilizing shell elements for the rest of the structure. The model error indicator serves as a guide for subsequent automatic adaptive re-meshing of the work-piece followed by a model-adaptive finite element analysis. The accuracy of the approximation obtained by the model-adaptive technique coincides well with that of a more expensive solution obtained with solid elements only.

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Metadaten
Author:Dmitry Ledentsov, Alexander Düster, Wolfram Volk, Marcus WagnerORCiDGND, Ingo Heinle, Ernst Rank
DOI:https://doi.org/10.1016/j.finel.2010.02.006
Parent Title (English):Finite Elements in Analysis and Design
Document Type:Article
Language:English
Year of first Publication:2010
Release Date:2021/05/26
Tag:Coupled analysis; Finite elements; Model adaptivity; Model error; Sheet metal forming
Volume:46
Issue:7
First Page:585
Last Page:600
Institutes:Fakultät Maschinenbau
Fakultät Maschinenbau / Labor Finite-Elemente-Methode (FEM)
Fakultät Maschinenbau / Labor Maschinendynamik und Strukturanalyse (LMS)
Begutachtungsstatus:peer-reviewed
Publication:Externe Publikationen
research focus:Produktion und Systeme
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG
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