The Elastic-Viscoplastic Field Near Mode II Dynamic Propagating Crack-Tip of Interface in Double Dissimilar Materials

Abstract:

The existence of viscosity effect at the interface of double dissimilar materials has an important impact to the distribution of interface crack-tip field and the properties variety of the interface itself. The singular is considered in crack-tip, and the elastic-viscoplastic governing equations of double dissimilar materials at quasi-static propagating interface crack-tip field are established. The displacement potential function and boundary condition of interface crack-tip are introduced, and the numerical analysis of rigid-elastic viscoplastic interface for mode II are worked out. The stress-strain fields are obtained at the crack-tip and the variations of solutions are discussed according to each parameter. The numerical results show that the viscosity effect is a main factor of interface propagating crack-tip field, and the interface crack-tip is a viscoplastic field that is governed by viscosity coefficient、Mach number and singular factor.

• Periodical: Advanced Materials Research (Volumes 97-101)
• Pages: 625-628
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.97-101.625
• Online since: March 2010
• Authors: Wen Yan Liang, Zhen Qing Wang, Hong Qing Lv
• Keywords: Elastic-Viscoplastic Material, Interface Crack, Quasi-Static Propagation, Viscosity

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