An Effective Plastic Strain Component for Low Cycle Fatigue in Metals
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概要
- 論文の詳細を見る
Low cycle fatigue tests were performed on several kinds of metal materials, and fatigue life was considered in terms of cyclic hardening property. The cumulative plastic strain energy to failure increases with a decrease in the plastic strain range controlled. The rate of the increase in that amount is influenced by the slip character of materials. Such a difference in the rate is reasonably interpreted by considering the shape of stress-strain hysteresis loop dependent on the slip character. A new criterion for low cycle fatigue was proposed on the basis of the effective plastic strain, ε_<pe> which is obtained through an analysis of the profile of the hysteresis loop. A simple equation of ε_<pe>・N_f= Constant is established in the life range from 10^3 to 10^7 cycles. This means that fatigue failure results from the linear accumulation of the effective plastic strain during strain cycling.
- 一般社団法人日本機械学会の論文
著者
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Hirose Yuji
Kawasaki Steel Corporation
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Yamada Toshiro
Department Of Mechanical Engineering Faculty Of Engineering Kyoto University
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Hatanaka Kenji
Department Of Biomaterials Okayama University Graduate School Of Medicine Dentistry And Pharmaceutic
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YAMADA TOSHIRO
Department of Chemical Engineering, Kanazawa University
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