曲轴作为柴油机的重要零部件 ,其强度直接影响柴油机的寿命。文中介绍了一种曲轴有限元分析系统 ,并应用该系统计算了五缸增压柴油机曲轴的强度 ,阐述了不同材料对五缸增压柴油机曲轴强度的影响。结果表明 ,有限元法能较为准确地预测应选择哪种材料以满足曲轴强度的要求 Crankshaft as an important diesel engine parts, the strength of a direct impact on diesel engine life. In this paper, a crankshaft finite element analysis system is introduced. The system is used to calculate the crankshaft strength of a five - cylinder turbocharged diesel engine. The effect of different materials on the crankshaft strength of a five - cylinder turbocharged diesel engine is illustrated. The results show that the finite element method can predict more accurately which material should be selected to meet the requirement of crankshaft strength