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Title: Variance-Based Sensitivity Analysis of the Biaxial Test on a Cruciform Specimen
Author: Pereira, André F.G.
Oliveira, Marta C.
Fernandes, José V.
Prates, Pedro A.
Keywords: Sensitivity Analysis
Sobol Indices
Biaxial Tensile Test
Cruciform Specimen
Issue Date: 2022
Publisher: Trans Tech Publications Ltd
Abstract: Parameter identification is a key aspect in the modeling of the material’s mechanical behavior. The identification quality depends on the sensitivity of the test results to the values of the constitutive parameters. In this context, a variance-based sensitivity analysis is performed, in order to quantify the influence of the material parameters on the results of the biaxial test on a cruciform specimen; in particular the influence of the Swift hardening law parameters and the Hill'48 anisotropic yield criterion on the forces, the principal strains, strain path and thickness reduction. In general, it was concluded that the Swift hardening parameters influence the forces and the major principal strain value, while the anisotropy parameters have the most influence in the principal strains, strain path and thickness reduction along the surface of the cruciform specimen.
Peer review: yes
DOI: 10.4028/p-8med4s
ISSN: 1013-9826
Appears in Collections:TEMA - Artigos

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