異材接合端における応力強さからの応力特異性の消失条件 : (第2報, 3相異材接合体の場合)

概要

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In this paper, characteristics of the stress intensity K in a three phase bonded structure subjected to a uniform temperature change are studied theoretically. Material combinations with wedge angles and mechanical properties (Young's modulus, Poisson's ratio and thermal expansion coefficient), in which K becomes zero, are shown on the k_<12> (stiffness ratio)-ψ_1 (wedge angle of material 1) plane against the thermal expansion coefficients. Also, distribution forms for K are the same as those in the case of a two phase bonded structure. Then, the distribution forms for K in the case of the threephase structure strongly depend on the thermal expansion coefficients of each material. Moreover, the relationship yielding K=0 between the stiffness ratio and the wedge angle, classification of the distribution patterns for K and disappearance conditions of the stress singularity are shown on the k_<12>-ψ_1 plane.
一般社団法人日本機械学会の論文
1997-02-25