四面体要素向け仮想き裂閉口積分法(VCCM)を用いた三次元き裂進展解析のためのメッシュ生成技術(<小特集>複合荷重下における疲労および疲労き裂進展挙動の最先端研究(実験的/解析的アプローチ))

概要

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Three dimensional crack propagation analysis will enable more realistic assessment of the structural integrity for aging structures such as aircrafts and power plants. Recently, as a linear-elastic fracture parameter evaluation method, VCCM (Virtual Crack Closure-Integral Method) is extended for 3-D tetrahedral element. With fully automatic generation capability of tetrahedral mesh, more realistic crack propagation of a 3-D crack propagation analysis. A crack propagation analysis of an elliptical crack in a mixed-mode environment, which is initially flat and is gradually growing into a curved crack in 3-D space, is also demonstrated.
一般社団法人日本機械学会の論文
2008-06-25