Vol. 5, No. 5, 2010

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SIFs of rectangular tensile sheets with symmetric double edge defects

Xiangqiao Yan, Baoliang Liu and Zhaohui Hu

Vol. 5 (2010), No. 5, 795–803
Abstract

Tensile sheets with symmetrically placed cracks on opposite edges are studied using the displacement discontinuity method with crack-tip elements. Three cases are considered: a rectangular sheet, one with half-circle indentations on the cracked edges, and one with notch indentations. Solutions for the stress intensity factors (SIFs) of the three problems are given, revealing the effect of the geometric parameters. By comparing the three cases, one observes that the indentations have a shielding effect.

Keywords
double edge defects, stress intensity factors, edge crack, half-circular indentation, half-square indentation
Milestones
Received: 6 December 2009
Revised: 31 May 2010
Accepted: 10 June 2010
Published: 3 December 2010
Authors
Xiangqiao Yan
Research Laboratory on Composite Materials
Harbin Institute of Technology
Harbin 150001
China
Baoliang Liu
Research Laboratory on Composite Materials
Harbin Institute of Technology
Harbin 150001
China
Zhaohui Hu
Research Laboratory on Composite Materials
Harbin Institute of Technology
Harbin 150001
China