不等長界面き裂の応力拡大係数の干渉効果と弾性定数の影響(特集木質材料)

概要

論文の詳細を見る
This paper deals with interaction problems of interface cracks with unequal length. The problems are analyzed by using the singular integral equations on the basis of the body force method. In the numerical analysis, the unknown function of body force density is approximated by the product of the fundamental density function and power series. The stress intensity factor of interface cracks is systematically calculated for various crack dimensions, spacing and elastic constants. The interaction effect of these variables is discussed by comparing the present results with the results of ordinary crack problems in a homogeneous material. The calculation shows that the effect of elastic constants of dissimilar materials on the dimensionless stress intensity factor F_1 for interface cracks is small and F_1-value of interface cracks is almost the same as that of ordinary cracks with the same geometrical condition.
社団法人日本材料学会の論文
1997-04-15