高速列车风阻制动风翼抗鸟撞分析  

Numerical analysis of anti-bird impact performance of aerodynamic brake wing on high-speed train

作　　者：左建勇[1] 朱晓宇[1] 吴萌岭[1] 

机构地区：[1]同济大学铁道与城市轨道交通研究院,上海200092

出　　处：《振动与冲击》2014年第22期30-34,共5页Journal of Vibration and Shock

基　　金：中央高校基本科研业务费专项资金资助(2860219030);牵引动力国家重点实验室开放课题资助(TPL1308)

摘　　要：对研制的复合材料高速列车风阻制动风翼建立有限元模型。据接触-碰撞基本理论利用非线性动力分析软件LS-DYNA对鸟撞制动风翼过程数值仿真,将计算结果与实验数据对比验证仿真过程的合理性。结果显示,该制动风翼能承受500 km/h鸟体撞击,极限能达625 km/h,满足要求设计。鸟撞过程中制动风翼变形具有冲击波传递特征,应力峰值主要出现在被撞击区域,与底座相连部分及摇臂附近也会出现应力集中。A finite element model of the bird and composite brake wing on high speed train was established.Based on contact-collision theory and by using non-linear dynamic analysis software LS-DYNA the process of bird impact on aerodynamic brake wing was simulated.Through the comparison of the experiment and numerical simulation results,the rationality and feasibility of the model were verified.The simulation results show that the designed brake wing can withstand the bird strike with a speed of 500 km /h and the limiting case is the bird velocity reaching about 625 km /h.In the impact process,the deformation history of the brake wing shows the feature of shock wave transmission.The peak stress mainly distributes in the surrounding of impacted area and the stress concentration may appear in the vicinity of the part connected to the bottom case and rocker arm.

关 键 词：高速列车 制动风翼 鸟撞 复合材料 有限元分析 

分 类 号：U270.1[机械工程—车辆工程]