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从疲劳过程中材料吸收的总应变能和每次循环的应力应变滞后环出发,推出了形如Coffin-Manson公式和Basquin公式的寿命预测表达式。实验验证结果表明,在高应变低寿命区,理论与实测的曲线相吻合。
Starting from the total strain energy absorbed by the material during fatigue and the stress-strain hysteresis loop for each cycle, life prediction expressions such as Coffin-Manson and Basquin are introduced. Experimental results show that, in the high strain and low life area, the theoretical and measured curves are in good agreement.