Stress Fields Around a Crack Lying Parallel to a Free Surface

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概要

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• A method of stress analysis for a two dimentional crack, which is subjected to internal gas pressure, and situated parallel to a free surface of a material, is presented. It is based on the concept of continuously distributed edge dislocations of two kinds, i.e. one with Burgers vector normal to the free surface and the other with parallel to it. Stress fields of individual dislocations are chosen so as to satisfy stress free boundary conditions at the free surface, by taking account of image dislocations. Distributions of the both kinds of dislocations in the crack are derived so as to give the internal gas pressure and, at the same time, to satisfy shear stress free boundary condition on the crack surface. Stress fields σ_<xx>, σ_<yy> and σ_<xy> in the sub-surface layer are then determined from them. They have square root singularities at the crack-tip.

• 核融合科学研究所の論文

著者

• Higashida Y.

  Research Information Center Institute Of Plasma Physics Nagoya University:maiko Senior High School

• Kamada K.

  Research Information Center, Institute of Plasma Physics, Nagoya University

関連論文

• Stress Fields Around a Crack Lying Parallel to a Free Surface

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