Continuous near-tip fields for a dynamic crack propagating in a power-law elastic-plastic material |
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Authors: | XK Zhu KC Hwang GT Liu |
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Affiliation: | (1) Department of Engineering Mechanics and Hydraulic Engineering, Tsinghua University, Beijing, 100084, China |
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Abstract: | By use of the J
2 flow theory and the rectangular components of field quantities, the near-tip asymptotic fields are studied for a dynamic
mode-I crack propagating in an incompressible power-law elastic-plastic material under the plan strain conditions. Through
assuming that the stress and strain components near a dynamic crack tip are of the same singularity, the present paper constructs
with success the fully continuous dominant stress and strain fields. The angular variations of these fields are identical
with those corresponding to the dynamic crack propagation in an elastic-perfectly plastic material (Leighton et al., 1987).
The dynamic asymptotic field does not reduce to the quasi-static asymptotic field in the limit as the crack speed goes to
zero.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | power-law hardening material incompressibility plane strain model-I crack dynamic propagation asymptotic field |
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