Efficient identification of material parameters based on experiments providing full-field kinematics

  • Performing predictive and accurate simulations of anisotropic, nonlinear materials requires not only to construct an appropriate constitutive model describing the mechanical behavior, but also to devise a methodology which enables a quantitative identification of the material parameters. Nowadays, full-field measurements of displacements and strains are considered as effective tool for material characterization. In the scope of this work, first, the material model is reformulated such that the parameters appear linear in the constitutive equations. Second, the full-field kinematics are directly inserted into the discretized equilibrium equation. This enables the definition of a quadratic objective function in terms of differences of discrete internal and external forces. Third, one single inhomogeneous experimental setup is designed to excite all deformation modes in the material model.

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Author:Lubna MakhoolORCiDGND, Daniel BalzaniORCiDGND
Parent Title (English):Proceedings in applied mathematics & mechanics
Place of publication:Weinheim
Document Type:Article
Date of Publication (online):2024/03/07
Date of first Publication:2021/01/25
Publishing Institution:Ruhr-Universität Bochum, Universitätsbibliothek
Issue:1, Artikel e202000168
First Page:e202000168-1
Last Page:e202000168-3
Dieser Beitrag ist auf Grund des DEAL-Wiley-Vertrages frei zugänglich.
Institutes/Facilities:Lehrstuhl für Kontinuumsmechanik
Dewey Decimal Classification:Technik, Medizin, angewandte Wissenschaften / Ingenieurbau, Umwelttechnik
open_access (DINI-Set):open_access
faculties:Fakultät für Bau- und Umweltingenieurwissenschaften
Licence (English):License LogoCreative Commons - CC BY 4.0 - Attribution 4.0 International