A205 2パラメータ評価法に対する参照応力J積分解析法の適用性の検討(材料強度評価-2,OS-6 保全・設備診断技術(3),一般講演,地球温暖化防止と動力エネルギー技術)

概要

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In the rule on fitness-for-service for nuclear power plants of the Japan society of mechanical engineers (JSME), the two-parameter approach is prescribed for failure assessment of defects. In this study, in order to apply the reference stress method to the evaluation of J-integral value, applicability of several limit load solutions was investigated by comparing with results of elastic-plastic finite element analyses. Flawed pipes containing axial or circumferential flaw were analyzed under internal pressure or bending load. Appropriate limit load solutions were suggested for evaluation of the failure assessment curve, based on analyses of 2880 cases for different flaw and pipe geometries and material used in nuclear power plants.
2008-06-18