3D mixed virtual element formulation for dynamic elasto-plastic analysis

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Cihan, M.; Hudobivnik, B.; Aldakheel, F.; Wriggers, P.: 3D mixed virtual element formulation for dynamic elasto-plastic analysis. In: Computational mechanics : solids, fluids, engineered materials, aging infrastructure, molecular dynamics, heat transfer, manufacturing processes, optimization, fracture & integrity 68 (2021), Nr. 3, S. 1-18. DOI: https://doi.org/10.1007/s00466-021-02010-8

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Abstract: 
The virtual element method (VEM) for dynamic analyses of nonlinear elasto-plastic problems undergoing large deformations is outlined within this work. VEM has been applied to various problems in engineering, considering elasto-plasticity, multiphysics, damage, elastodynamics, contact- and fracture mechanics. This work focuses on the extension of VEM formulations towards dynamic elasto-plastic applications. Hereby low-order ansatz functions are employed in three dimensions with elements having arbitrary convex or concave polygonal shapes. The formulations presented in this study are based on minimization of potential function for both the static as well as the dynamic behavior. Additionally, to overcome the volumetric locking phenomena due to elastic and plastic incompressibility conditions, a mixed formulation based on a Hu-Washizu functional is adopted. For the implicit time integration scheme, Newmark method is used. To show the model performance, various numerical examples in 3D are presented.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2021
Appears in Collections:Fakultät für Maschinenbau

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1 image of flag of Germany Germany 16 59.26%
2 image of flag of United States United States 8 29.63%
3 image of flag of Hong Kong Hong Kong 1 3.70%
4 image of flag of France France 1 3.70%
5 image of flag of China China 1 3.70%

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