Identification of elastoplastic microscopic material parameters within a homogenization scheme

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: 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-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Mergheim, Julia PD Dr.
Professur für Computational Mechanics
Schmidt, Ulrike
Lehrstuhl für Technische Mechanik
Steinmann, Paul Prof. Dr.-Ing.
Lehrstuhl für Technische Mechanik


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Forschungsbereiche

E Lightweight Materials
Exzellenz-Cluster Engineering of Advanced Materials
A3 Multiscale Modeling and Simulation
Exzellenz-Cluster Engineering of Advanced Materials


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.

BibTeX: 

Zuletzt aktualisiert 2019-14-03 um 12:48