Parameter optimization for a multiaxial stress-strain correction scheme

Lang H, Dressler K, Pinnau R (2005)

Publication Type: Other publication type

Publication year: 2005

Series: AGTM report

Journal Issue: 264

Abstract

A gradient based algorithm for parameter identification (least-squares) is applied to a multiaxial correction method for elastic stresses and strains at notches. The correction scheme, which is numerically cheap, is based on Jiang’s model of elastoplasticity. Both mathematical stress-strain analyses (nonlinear finite element method with Jiang’s model of elastoplasticity) and physical strain measurements have been approximized. The gradient evaluation with respect to the parameters, which is very large in scale, is realized by the automatic forward differentiation technique.

Authors with CRIS profile

Holger Lang Institute of Applied Dynamics

Involved external institutions

Fraunhofer-Institut für Techno- und Wirtschaftsmathematik (ITWM) / Fraunhofer Institute for Industrial Mathematics DE Germany (DE) Technische Universität Kaiserslautern DE Germany (DE)

How to cite

APA:

Lang, H., Dressler, K., & Pinnau, R. (2005). Parameter optimization for a multiaxial stress-strain correction scheme.

MLA:

Lang, Holger, Klaus Dressler, and René Pinnau. Parameter optimization for a multiaxial stress-strain correction scheme. 2005.

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