Identification of elastoplastic microscopic material parameters within a homogenization scheme
Beitrag in einer Fachzeitschrift
Details zur Publikation
Autor(en): Schmidt U, Mergheim J, Steinmann P
Zeitschrift: → International Journal For Numerical Methods in Engineering |
Verlag: Wiley-Blackwell
Jahr der Veröffentlichung: 2015
Band: 104
Heftnummer: 6
Seitenbereich: 391–407
ISSN: 0029-5981
Abstract
A two-scale parameter identification approach is investigated. The microscopic material parameters of a two-scale model are identified by comparing macroscopic simulation data with macroscopic full-field measurements of the micro-structured specimen. Gradient-based solution strategies are employed for the optimization problem of the two-scale parameter identification. In particular, two approaches
for the gradient calculation are investigated: the finite difference method is compared with a newly introduced semi-analytical scheme. The focus lies on the identification of microscopic elastoplastic material parameters. The presented identification example with artificial data confirms a reduced computational effort and advantageous convergence for the semi-analytical approach within the two-scale parameter identification. A drawback is the increase in memory requirement.
FAU-Autoren / FAU-Herausgeber
| | | Professur für Computational Mechanics |
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| | | Lehrstuhl für Technische Mechanik |
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| Steinmann, Paul Prof. Dr.-Ing. |
| | Lehrstuhl für Technische Mechanik |
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Zusätzliche Organisationseinheit(en)
→ Exzellenz-Cluster Engineering of Advanced Materials |
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Zitierweisen
APA: | Schmidt, U., Mergheim, J., & Steinmann, P. (2015). Identification of elastoplastic microscopic material parameters within a homogenization scheme. International Journal For Numerical Methods in Engineering, 104(6), 391–407. |
MLA: | Schmidt, Ulrike, Julia Mergheim, and Paul Steinmann. "Identification of elastoplastic microscopic material parameters within a homogenization scheme." International Journal For Numerical Methods in Engineering 104.6 (2015): 391–407. |