Stress Fields of Creep Damage Notch Tip in Steady Propagation

MENG Qing-hua; LIANG Wen-yan; WANG Zhen-qing

doi:10.3879/j.issn.1000-0887.2013.03.002

Volume 34 Issue 3

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MENG Qing-hua, LIANG Wen-yan, WANG Zhen-qing. Stress Fields of Creep Damage Notch Tip in Steady Propagation[J]. Applied Mathematics and Mechanics, 2013, 34(3): 226-234. doi: 10.3879/j.issn.1000-0887.2013.03.002

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Stress Fields of Creep Damage Notch Tip in Steady Propagation

doi: 10.3879/j.issn.1000-0887.2013.03.002

College of Aerospace and Civil Engineering, Harbin Engineering University,Harbin 150001, P.R.China

Received Date: 2012-12-31
Rev Recd Date: 2013-01-04
Publish Date: 2013-03-15

Abstract

Abstract

The stress fields of the steady propagation notch tip in creep damage materials under tensile loading and antiplane shear loading were investigated. The stress potential function and the displacement potential function were adopted. The governing equations of the steady propagation notch tip were obtained under small scale creep conditions. The governing equations were solved numerically considering the effect of notch tip blunting and the boundary condition of problems. The stress fields of the notch tip were obtained. Variations of the stress fields near the notch tip as the parameter were discussed. The results show that the stress has an r^1/(1-n) singularity and the rates of stress posses the r^n/(1-n) singularity near the notch tip, where n is the creep exponent.
- steady propagation,
- creep damage,
- notch tip,
- governing equation,
- stress field

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References(14)

References

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