Paper Title:
The Asymptotic Elastic-Viscoplastic Field at Mode I Dynamic Propagating Crack-Tip
  Abstract

The viscosity of material is considered at propagating crack-tip. Under the assumption that the artificial viscosity coefficient is in inverse proportion to the power law of the plastic strain rate, an elastic-viscoplastic asymptotic analysis is carried out for moving crack-tip fields in power-hardening materials under plane-strain condition. A continuous solution is obtained containing no discontinuities. The variations of the numerical solution are discussed for mode I crack according to each parameter. It is shown that stress and strain both possess exponential singularity. The elasticity, plasticity and viscosity of material at the crack-tip only can be matched reasonably under linear-hardening condition. The tip field contains no elastic unloading zone for mode I crack.

  Info
Periodical
Key Engineering Materials (Volumes 348-349)
Edited by
J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel
Pages
817-820
DOI
10.4028/www.scientific.net/KEM.348-349.817
Citation
Z. Q. Wang, J. B. Wang, W. Y. Liang, J. Su, "The Asymptotic Elastic-Viscoplastic Field at Mode I Dynamic Propagating Crack-Tip", Key Engineering Materials, Vols. 348-349, pp. 817-820, 2007
Online since
September 2007
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$32.00
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