Investigation of Mesh Dependency of Materials Fracture in the Finite Element Simulation of a Projectile Penetrating into a Target

Jin Tao Liu; Qun Bo Fan; Hong Nian Cai; Guo Ju Li

doi:10.4028/www.scientific.net/AMM.782.302

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 782Investigation of Mesh Dependency of Materials...

Investigation of Mesh Dependency of Materials Fracture in the Finite Element Simulation of a Projectile Penetrating into a Target

Abstract:

In finite element numerical simulation, the calculating results of geometrical models with different mesh density tend to have obvious differences, especially when material damage and fracture are considered. In order to study the mesh dependency of the finite element calculation, models of a projectile penetrating into the target with different mesh densities are constructed by using LS-DYNA. A nonlocal approach is investigated and the results without and with MAT_NONLOCAL are compared. It is found that the nonlocal model with a variable characteristic length parameter provides a relatively accurate and stable result, and the calculation cost can be reduced.

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Periodical:

Applied Mechanics and Materials (Volume 782)

Pages:

302-308

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.782.302

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Online since:

August 2015

Authors:

Jin Tao Liu, Qun Bo Fan*, Hong Nian Cai, Guo Ju Li

Keywords:

Finite Element Method, Mesh Dependency, Nonlocal Model

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