413 高温における材料の繰り返し変形挙動とクリープ構成則

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概要

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• Material response under cyclic loading conditions has been examined by experimental investigation and analyses using recovery type model. Uniaxial creep and creep-fatigue tests have been conducted for pure copper. Under the condition used, the overall strain response under cyclic loading is slightly faster than that under constant loading in terms of the time at maximum load. Constitutive law of the material can be described by the recovery type model (the Modified Robinson Model). Material characteristic time, t_s is introduced to discuss the effect of frequency. Slow cycle and rapid cycle are proposed as the extreme situations under cyclic loading. The mean strain rate at give frequency can be determined as a value between that for slow and rapid cycling. The transition time from slow cycling to rapid cycling corresponds to the material characteristics time t_s.

• 一般社団法人日本機械学会の論文
• 2002-08-29

著者

• 磯貝 毅

  帝京大

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• S0305-4-3 組合せ応力下における高温き裂成長に対する電気ポテンシャル法の適用(第2報) : 種々の高温疲労き裂形態に関する検討([S0305-4]計測・疲労強度)
• 413 高温における材料の繰り返し変形挙動とクリープ構成則

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