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1.前言约十年前,五十铃汽车公司开始了新系列重型发动机的研制工作,目标是减轻重量和提高功率。为此,在曲轴的尺寸和重量方面必须严密地设计,因为曲轴的尺寸必然会影响发动机其他零件的设计。一般来说,在理论上计算曲轴的应力是很困难的,要花费很多时间;因为曲轴是由许多具有非线性弹性特性的轴承支承的。于是集中技术力量求出一种简便的计
About a decade ago, Isuzu Motors started the development of a new series of heavy-duty engines with the goal of reducing weight and increasing power. For this reason, the crankshaft size and weight must be carefully designed, because the size of the crankshaft will inevitably affect the design of other parts of the engine. In general, it is very difficult to theoretically calculate the stress of a crankshaft, which takes a lot of time; because the crankshaft is supported by a large number of bearings with nonlinear elastic properties. So concentrated technical force to find a simple meter