LOW CYCLE FATIGUE LIFE AND PLASTIC STRAIN ENERGY

Acta Metall Sin

1993, Vol. 29

Issue (2): 45-48 DOI:

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LOW CYCLE FATIGUE LIFE AND PLASTIC STRAIN ENERGY

NHAO Tingshi Huazhong University of Science and Technology; Wuhan

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NHAO Tingshi Huazhong University of Science and Technology; Wuhan. LOW CYCLE FATIGUE LIFE AND PLASTIC STRAIN ENERGY. Acta Metall Sin, 1993, 29(2): 45-48.

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Abstract The life under low cycle fatigue with plastic strain energy for tensile andcompressive fatigue of steel 45: N_f=(W_f / △W)~(1/a),and for torsional fatigue of steel 35: N_f=(U_f / △U)~(1/b)where W and U are plastic strain energy under cycle fatigue, a and b are exponent. The cumu-lative damage ∑(n_i / N_(if))~c=1, where n and N are number of cycle and c is constant.

Key words: low cycle fatigue plastic strain energy cumulative damage fatigue life

Received: 18 February 1993

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1993/V29/I2/45

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4 徐灏.疲劳强度.北京:高等教育出版社,1988:90(

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