Paper Title:
Elastic-Viscoplastic Field at the Mixed-Mode Crack-Tip under Compression and Shear
  Abstract

In the present paper, the mechanical model of dynamic propagation interface crack of the compression-shear mixed mode is proposed by using the elastic-viscoplastic constitutive model. Then the governing equations of propagation crack interface at crack tip are given. The numerical analysis is accomplished for the interface crack of compression-shear mixed mode by introducing a displacement potential function and some boundary conditions at interface crack tip. The distributed regularities of stress-strain fields of interface crack tip are discussed with several special parameters. The numerical results show that the viscosity effect is a main factor of interface propagating at crack-tip field, and the interface crack-tip is a viscoplastic field that is governed by viscosity coefficient、Mach number and singularity exponent.

  Info
Periodical
Key Engineering Materials (Volumes 488-489)
Edited by
Z. Tonković and M.H. Aliabadi
Pages
452-455
DOI
10.4028/www.scientific.net/KEM.488-489.452
Citation
W. Y. Liang, Z. Q. Wang, F. Liu, "Elastic-Viscoplastic Field at the Mixed-Mode Crack-Tip under Compression and Shear", Key Engineering Materials, Vols. 488-489, pp. 452-455, 2012
Online since
September 2011
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