OS1402 X-FEMによる延性き裂の進展シミュレーション(エネルギー機器の経年変化に関する健全性評価,オーガナイズドセッション)

概要

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Conventional FEM is continually used for the flaw evaluation of pipe structures to investigate the fitness-for-service for power plant components, however, it is generally time consuming to make a model of specific crack configuration. The consideration of a propagating surface-crack is further accentuated since the crack propagation behavior along the crack front is implicitly affected by the distribution of the crack driving force along the crack front The authors developed a system to conduct crack propagation analysis by use of the three-dimensional elastic-plastic X-FEM. It can realize the simultaneous calculation of the J-integral and the consequent ductile crack propagation. In this presentation, some typical results of the application of the developed system to ductile crack propagation for circumferentially surface cracks in pipe structures are presented.
一般社団法人日本機械学会の論文
2009-07-24