面外せん断クラックの先端から進展するすべり帯
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概要
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The initial development of anti-plane strain yielding from a crack in an infinite elastic body was represented by a continuous distribution of screw dislocations on two planes inclined at angles ±βπ to the crack plane. The relevant stress function of the system was obtained in a closed form by the complex variable method. The slip line length and the crack tip opening displacement were obtained as functions of the applied stress and β. A comparison with the corresponding plane strain model gave similar results for βπ≈70°. The stress field near the crack tip was also discussed. When βπ<90°, the shearing stress acting ahead of the crack tip was bounded. In particular, for βπ≈70°, τ_<yz>, was about 3τ_0, where τ_0 is the yield stress in shear, in agreement with the result from continuum plasticity.
- 社団法人日本材料学会の論文
- 1982-06-15