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Influence of structural hypotheses on the elastic‐viscoplastic response of shock wave‐loaded plates
Author(s) -
Stoffel Marcus,
Vu Thang Duy,
Nguyen An Danh,
Schmidt Rüdiger,
Weichert Dieter
Publication year - 2011
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201110137
Subject(s) - viscoplasticity , finite element method , constitutive equation , structural engineering , shock (circulatory) , mechanics , shear (geology) , materials science , physics , engineering , composite material , medicine
If circular metal plates are subjected repeatedly to impulsive loadings, damage and failure of the structures can occur. In order to predict the damage evolution in finite element simulations, a structural theory combined with viscoplastic constitutive equations acounting for damage is used. However, different structural hypotheses, used in the theoretical model, can lead to variations in the numerical result. Therefore, first‐ and third‐order shear deformations theories are applied in a finite element code. Moreover, local and non‐local damage approaches are used. The aim is to determine the numerical model, which leads to the most accurate results compared to experiments. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)