K-0831 混合モード負荷を受ける長方形および半だ円表面き裂の応力拡大係数の分布の解析(S09-1 き裂)(S09 特異点解析と強度評価への適用)

概要

論文の詳細を見る
In this paper, a singular integral equation method is applied to calculate the stress intensity factor along crack front of a 3-D rectangular crack in an infinite body and a 3-D semi-elliptical surface crack in a semi-infinite body under mixed mode loading. The body force method is used to formulate the problem as a system of singular integral equations with singularities of the form r^<-3> using the stress field induced by a force doublet in an infinite body as fundamental solution. In the numerical calculation, unknown body force densities are approximated by using fundamental density functions and polynomials. The results show that the present method yields smooth variations of mixed modes stress intensity factors along the crack front accurately. Distributions of stress intensity factors are indicated in tables and figures with varying the shape and Poisson's ratio.
一般社団法人日本機械学会の論文
2001-08-22