K-0832 温度揺らぎ下円筒環状き裂の応力拡大係数(S09-1 き裂)(S09 特異点解析と強度評価への適用)

概要

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Maximum stress intensity factor (SIF) range of an inner-surface circumferential crack, in a finite-length thick-walled cylinder with rotation-restrained edges, under thermal striping was studied. Results showed that the maximum SIF range under thermal striping for a temperature range 2ΔT is smaller than maximum SIF range under step temperature change of 2ΔT. These results suggest the fact that characteristics obtained for step temperature change (a tentative value of the threshold stress intensity range ΔK_<th>, was assumed together with the Paris law), such as the existence of an upper limit for the normalized crack growth depth independent of the cylinder material, are valid for thermal striping.
一般社団法人日本機械学会の論文
2001-08-22