The Elastic-Viscoplastic Field at the Mixed-Mode Crack-Tip under Compression and Shear

Abstract:

Under the assumption that the viscosity coefficient is in inverse proportion to the power law of the equivalent plastic strain rate. The friction touch effect between viscosity and crack-tip surfaces is considered, the asymptotic solution is established for elastic-viscoplastic field at the mixed-mode quasi static crack-tip under compression and shear. The numerical solution at crack-tip without stress and stain gap is obtained. The variation of numerical solution is discussed for the mixed-mode under compression and shear according to each parameter. Through numerical results and analysis for the mixed-mode crack-tip field under compressing and shear, it is whole plastic without elastic unloaded section, viscosity effect is an important factor when propagating crack-tip field.

• Periodical: Key Engineering Materials (Volumes 385-387)
• Pages: 321-324
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.385-387.321
• Online since: July 2008
• Authors: Wen Yan Liang, Zhen Qing Wang, Bo Zhou, Hong Qing Lv
• Keywords: Elastic-Viscoplastic Material, Mixed-Mode Crack-Tip under Compression and Shear, Quasi-Static Propagating, Viscosity Effect

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