Effect of poisson ratio on the perfectly plastic field at a rapidly propagating plane-strain crack-tip |
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Authors: | Lin Bai-song |
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Institution: | Central-South University of Technology, Changsha |
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Abstract: | All the stress components at a rapidly propagating crack-tip in elastic perfectly-plastic material are the functions of only. Making use of this condition and the equations of steady-state motion, plastic stress-strain relations, and Mises yield condition with Poisson ratio, in this paper, we derive the general expression of perfectly plastic field at a rapidly propagating plane-strain crack-tip. Applying this general expression with Poisson ratio to Mode I crack, the perfectly plastic field at the rapidly propagating tip of Mode I plane-strain crack is obtained. This perfectly plastic field contains a Poisson ratio, and thus, we can obtain the effect of Poisson ratio on the perfectly plastic field at the rapidly propagating tip of Mode I plane-strain crack. |
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Keywords: | Poisson ratio rapid propagation in steady-state plane-strain crack-tip perfectly plastic field |
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