Micromechanics Analysis on Evolution of Crack in Viscoelastic Materials

ZHANG Shuang-yin

Volume 23 Issue 3

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Article Navigation > Applied Mathematics and Mechanics > 2002 > 23(3): 249-253

ZHANG Shuang-yin. Micromechanics Analysis on Evolution of Crack in Viscoelastic Materials[J]. Applied Mathematics and Mechanics, 2002, 23(3): 249-253.

Citation:

ZHANG Shuang-yin. Micromechanics Analysis on Evolution of Crack in Viscoelastic Materials[J]. Applied Mathematics and Mechanics, 2002, 23(3): 249-253.

Citation:

ZHANG Shuang-yin. Micromechanics Analysis on Evolution of Crack in Viscoelastic Materials[J]. Applied Mathematics and Mechanics, 2002, 23(3): 249-253.

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Micromechanics Analysis on Evolution of Crack in Viscoelastic Materials

ZHANG Shuang-yin

Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, P R China

Received Date: 2000-07-27
Rev Recd Date: 2001-11-20
Publish Date: 2002-03-15

Abstract

Abstract

A preliminary analysis on crack evolution in viscoelastic materials was presented.Based on the equivalent inclusion concept of micro-mechanics theory,the explicit expressions of crack opening displacement δ and energy release rate G were derived,indicating that both δ and G are increasing with time.The equivalent modulus of the viscoelastic solid comprising cracks was evaluated.It is proved that the decrease of the modulus comes from two mechanisms:one is the visco-elasticity of the material,the other is the crack opening which is getting larger with time.
- isco-elasticity,
- crack,
- micro-mechanics

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References

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