基于虚拟样机的坦克承载零部件疲劳寿命预测方法

Research on Fatigue Life Prediction Technique for Tank’s Load-bearing Parts Based on Virtual Prototype

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 breakage is the primary invalidation form of tank＇ s load-bearing parts, and prediction of the fatigue life has been one of the most important problems in the process of military equipment design, R＆D,validation and using. Based on Virtual Prototyping Technique, by using the rigid-flexible coupling model of the tracked vehicles, and ATV software, this paper tested the stress spectrum of the load-bearing parts by virtual experiments under emulational task section. Using fatigue life analysis and considering the correction coefficients of fatigue intensity, the author predicte the fatigue life and give real example. The predicted fatigue life is consistent with actual conditions. So the method to predict fatigue life developed in this paper is a practical and highly efficient new technique.