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在利用电子计算机确定并预测内燃机的疲劳寿命时,必须知道在机器运行状态下所研究零件的各应力分量如何变化。此问题可看成既是随机的又是肯定的。由于运行时载荷有偶然性的特点,内燃机工作过程参数有不可控制的偶然性的变化,因此,可以把它看成随机状态。靠随机方法及电子计算机技术,既能对内燃机在不同运行条件下的疲劳寿命进行比较,也能对发动机个别零件结构进行优化。为此,用了模型模拟方法及损伤累积的线性假设。此方法由苏联科学院通讯院士В.В.Болотный所发展,并发表在文献[1]中。用这个假设计算内燃机零
When using an electronic computer to determine and predict the fatigue life of an internal combustion engine, one must know how the various stress components of the part under study will vary with the operation of the machine. This problem can be seen as both random and positive. Due to the accidental nature of load at run time, the working process parameters of the internal combustion engine have uncontrollable contingency changes. Therefore, it can be regarded as a random state. By stochastic methods and electronic computer technology, both the fatigue life of the internal combustion engine in different operating conditions can be compared, but also to optimize the structure of individual parts of the engine. For this reason, we use the model simulation method and the linear assumption of damage accumulation. This method was developed by the academician В.В.Болотный of the Soviet Academy of Sciences and published in [1]. Use this assumption to calculate engine zero