高速列车风阻制动风翼抗鸟撞分析

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (22) : 30-34.

论文

高速列车风阻制动风翼抗鸟撞分析

左建勇

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Numerical Analysis of Anti-bird Impact Performance of Aerodynamic Brake Wing on High-speed train

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摘要

针对研制的复合材料高速列车风阻制动风翼，建立了有限元模型，运用接触-碰撞基本理论，利用非线性动力分析软件LS-DYNA对鸟撞制动风翼的过程进行数值仿真，并将计算结果与实验数据进行对比，验证了仿真过程的合理性。结果显示，设计的制动风翼能承受500km/h的鸟体撞击，满足要求，并且能承受鸟撞的极限情况是鸟体速度达到625km/h。鸟撞过程中制动风翼的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，与底座相连的部分以及摇臂附近也会出现应力集中。

Abstract

According to the aerodynamic brake wing made up of composite material on a high-speed train, the finite element model of the bird and brake wing was established. Based on contact-collision theory and by using non-linear dynamic analysis software LS-DYNA the process of bird impact on the 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 showed that the designed brake wing could withstand the bird strike with a speed of 500km/h and the limiting case was the bird velocity reaching about 625km/h. In the impact process, the deformation of the brake wing had a characteristic of shock wavetransmission. The peak stress mainly distributed in surrounding of the impacted area and the part area connected to the bottom case and rockerarm also can appear stress concentration.

导出引用

左建勇. 高速列车风阻制动风翼抗鸟撞分析[J]. 振动与冲击, 2014, 33(22): 30-34

Numerical Analysis of Anti-bird Impact Performance of Aerodynamic Brake Wing on High-speed train[J]. Journal of Vibration and Shock, 2014, 33(22): 30-34