坦克承载零部件的疲劳失效是其主要的失效形式,疲劳寿命的预测一直是装备设计、研制、验证和使用过程中的重要问题之一。利用虚拟样机技术,建立履带车辆刚柔体耦合模型,通过在一定任务剖面下车辆虚拟试验,测试其承载零件的载荷谱,结合疲劳寿命分析技术,进行疲劳寿命预测,并给出计算实例,预测的寿命与实际使用情况相符合,表明提出的坦克承载件疲劳寿命预测方法是一种高效、实用的新方法。 Fatigue failure of tank-bearing components is the main form of failure. Prediction of fatigue life has been one of the most important issues in equipment design, development, verification and use. The virtual prototype technology is used to establish the rigid-flexible coupling model of tracked vehicle. The virtual vehicle test under certain mission profile is used to test the load spectrum of its bearing components. Combined with the fatigue life analysis technology, the fatigue life prediction is carried out. The calculation example, prediction Life expectancy and the actual use of the line, indicating that the proposed tank bearing fatigue life prediction method is an efficient and practical new method.