The Influences of Constitutive Models on the Collapses of OFHC Copper Cylindrical Shells under Impact Compression

Shan Xing Wu; Da Nian Chen; Dong Fang Ma; Duo Zhang; Huan Ran Wang; Yang Hui Jin

doi:10.4028/www.scientific.net/AMR.179-180.691

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 179-180The Influences of Constitutive Models on the...

The Influences of Constitutive Models on the Collapses of OFHC Copper Cylindrical Shells under Impact Compression

Abstract:

An axial collapse test of Oxygen-Free High-Conductivity copper (OFHC) cylindrical specimen subjected to impact against a steel plane target at the velocity range between 64 m/s and 165 m/s was performed on a single gas gun. The deformation process of the OFHC cylindrical shell in the specimen was a sequence of the thermovisco-plastic wave propagation between target plate and the structural plate. The experimental results were simulated numerically by use of LS-DYNA. The influences of OFHC constitutive models on the deformations of OFHC cylindrical shells were shown in the paper. It seems that the Johnson－Cook(J-C) constitutive model gave a better prediction of the shape of the OFHC cylindrical shell in such an impact test. The deformation of cylindrical shell is sensitive to the work-hardening coefficient. The energy absorption behaviors of the OFHC cylindrical shells were also investigated. The energy absorption capability of the shells influenced by their geometries were also shown in the paper.

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Periodical:

Advanced Materials Research (Volumes 179-180)

Pages:

691-696

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.179-180.691

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Online since:

January 2011

Authors:

Shan Xing Wu, Da Nian Chen, Dong Fang Ma, Duo Zhang, Huan Ran Wang, Yang Hui Jin

Keywords:

Constitutive Model, Cylindrical Shell, Energy Absorption, Impact Test, Numerical Simulation, OFHC

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