铰接式客车车身骨架轻量化研究

Research on Skeleton Weight Lightening for Articulated Bus Body

对某18 m低入口后置铰接式城市客车车身进行有限元分析获得车身强度分布情况,在此基础上,采用正交法和交互调整相结合的方法对车身骨架进行轻量化改进设计。对重要构件安排正交计算,进行不同工况水平下的多次计算,以轻量化为目标确定最佳的改进方案,对强度、刚度影响小的构件,则直接进行改进。优化后的轻量化模型满足客车的强度、刚度要求,且轻量化效果显著,为铰接式客车车身骨架的轻量化设计提供了参考依据。

The intensity layout of a articulated bus body skeleton is studied. Based on the results, a complex method of orthogonal calculation and alternant amelioration is introduced in analysis calculation. The orthogonal calculation is used for some important components,for some less important components, alternant amelioration is suitable. The final results showed that the lightening model satisfies the strength and rigidity, and this combined method is fit for the whole skeleton of articulated bus weight lightening and of high efficiency.