Dynamic constitutive behavior of materials at high strain rate taking account of damage evolution

WANG Li-li; DONG Xin-long; SUN Zi-jian

doi:10.11883/1001-1455(2006)03-0193-06

Volume 26 Issue 3

Nov. 2014

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Article Navigation > Explosion And Shock Waves > 2006 > 26(3): 193-198

LIANG Zeng-you, HUANG Feng-lei, ZHANG Zhen-yu. Study on new reaction rate function model of PBX-9404 for damaged explosive initiation behaviour[J]. Explosion And Shock Waves, 2008, 28(1): 38-41. doi: 1.011883/1001-1455(2008)01-0038-06

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WANG Li-li, DONG Xin-long, SUN Zi-jian. Dynamic constitutive behavior of materials at high strain rate taking account of damage evolution[J]. Explosion And Shock Waves, 2006, 26(3): 193-198. doi: 10.11883/1001-1455(2006)03-0193-06

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Dynamic constitutive behavior of materials at high strain rate taking account of damage evolution

doi: 10.11883/1001-1455(2006)03-0193-06

1.
Mechanics and Materials Science Research Center, Ningbo University, Ningbo 315211, Zhejiang, China

Publish Date: 2006-05-25

Abstract

Abstract

High-velocity deformation process of material is usually accompanied with interior damage evolution in different forms. Experimental observations for different materials show that damage evolution is dependent on strain, strain rate and temperature, and a certain equivalency exists between the strain rate effect and the temperature effect. Thus, based on the thermo-activation mechanism, a strain and strain-rate dependent damage evolution law and the corresponding rate-dependent constitutive relation taking account of damage evolution are proposed. As an example, the ZWT nonlinear viscoelastic constitutive relation taking account of damage-weakening effect is further studied, particularly the constitutive response and the response due to damage evolution can be distinguished.
- solid mechanics,
- dynamic constitutive relation,
- damage evolution,
- high strain rate,
- dynamic failure

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