Paper Title:
Dynamic Stress Concentration of Circular Cavity and Double Linear Cracks in Elastic Medium
  Abstract

Sacttering of SH-wave of combined deffectiveness which included single circular cavity and double linear cracks in elastic medium was investigated in detail. Analytic solution of this problem was obtained by Green’s Function method and idea of crack-division at actual position of crack at two times. There were two key steps of this method. First step was to employ a special Green’s Function which was a fundamental solution of displacement field for an elastic space with a cavity in it subjected to out-of-plane harmonic line source force at any point at first. The sceond step was crack-division which was artificially to produce a crack by apllying opposite shear stress caused by incident SH-wave. Distribution of dynamic stress concentration factor (DSCF) at edge of cavity was studied by numerical analysis. Distribution Curves of DSCF of three models were plotted by numerical method in polar coordinate system. Three models were one circular cavity and without crack, one circular cavity and single crack and single circular cavity double cracks. The results were compared and discussed in different incident angle of SH-wave.Conclusion was that the interaction among SH-wave, single cavity and double crack was obvious. Dynamic stress concentration factor varied with angle and distance between cavity and crack.

  Info
Periodical
Key Engineering Materials (Volumes 419-420)
Edited by
Daizhong Su, Qingbin Zhang and Shifan Zhu
Pages
825-828
DOI
10.4028/www.scientific.net/KEM.419-420.825
Citation
X. Y. Zhang, G. P. Zou, H. L. Li, "Dynamic Stress Concentration of Circular Cavity and Double Linear Cracks in Elastic Medium", Key Engineering Materials, Vols. 419-420, pp. 825-828, 2010
Online since
October 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Bai Tao Sun, Pei Lei Yan, Zai Lin Yang
Abstract:Based on Green’s function, complex function and multi-polar coordinate system, the far field solution of SH wave scattered by an elastic...
157
Authors: Dong Ni Chen, Hui Qi, Yong Shi
Abstract:The scattering of SH-wave caused by the subsurface circular cavities in an elastic half-space covered with an elastic layer was discussed,...
1908
Authors: Tian Shu Song, Dong Li, Ming Ju Zhang, Yue Fa Zhou
Abstract:Dynamic anti-plane behaviors are studied on two dissimilar piezoelectric media with an interfacial non-circular cavity subjected to time...
293
Authors: Md. A. Hasib, Akihide Saimoto
Abstract:In this paper, the interference between arbitrary shaped 3D planar crack and cavity existing in the vicinity of the crack front is evaluated....
5