【摘要】 本文在线性累积损伤理论假说和修正的线性累积损伤理论假说的基础上,对机器零件在各种不同的应力振幅分布规律时的寿命计算公式和相对损伤值a_p的计算公式进行了推导。本文推导的公式修正了谢联先等著“机器零件的负荷能力和强度计算”(1975年增订第3版)一书中所列三个相似公式的错误。并通过计算实例对两种计算公式的计算结果进行了对比。更多还原

【Abstract】 Based on the hypothesis of linear accumulating fatique theory and its modified concept, authors of this paper have derived two formulae, one is for calculating the life of machine spareparts under stresses of various amplitude distribution, and the other is for evaluating their relative fatigue limits. The formulae here in presented have made some modification and correction to the three similar equations previously proposed by Cepecen C. B. et.al. in their revised 5th edition oPHecy in 1975. A detailed comparison of calculation results by these two formulae through practical examples is subsequently revealed.更多还原