高速转向架非线性稳定性及安全裕度对策

朴明伟;梁树林;孔维刚;兆文忠

振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 161-168.

PDF(2689 KB)
PDF(2689 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 161-168.
论文

高速转向架非线性稳定性及安全裕度对策

  • 朴明伟1; 梁树林2; 孔维刚1; 兆文忠1
作者信息 +

Non-linear Stability of High-speed Bogies and their Safety Margin Strategy

  • PIAO Ming-wei1; LIANG Shu-lin2 ; KONG Wei-gang1 ; ZHAO Wen-zhong1
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文章历史 +

摘要

为了满足新一代高速转向架的安全稳定性裕度要求,在构架振动报警原因分析的基础上,提出了抗蛇行减振器软约束技术对策。运行稳定性分析是指包括临界速度和动态行为在内的综合评价。临界速度取决于轮轨匹配特征,其对轮轨接触及转向架的非线性变化也将产生非常敏感的影响。动态行为评价是按照相关标准规范要求进行的构架横向加速度等安全指标评价。尽管在超临界分叉下轮对小幅值蛇行,但是由于抗蛇行减振器具有高频卸荷机制,拖车转向架动态行为也有可能达到或超过安全限制。构架横向加速度频响对比分析表明:转向架蛇行振荡是其振动频响的主要谐振成份,可以采用抗蛇行减振器软约束方式加以控制。

Abstract

In order to satisfy the safety stability-margin requirements of the new-generation high-speed bogies, based on the exploration of bogie frame acceleration alarm, the yaw soft constraint solutions and their technical implementation steps were presented. The running stability analysis is the synthesis evaluations included critical velocity and dynamical behavior. The critical velocities depend on the W/R matching features, and are influenced remarkably by the non-linear variation of both W/R contacts and bogies. The dynamical behavior evaluations are the safety index ones of bogie’s frame lateral acceleration, etc. Due to the anti-hunting dampers having the high-frequency blowing-off mechanism, the safety limits can also be reached or exceeded by the dynamical behavors of trailer bogies in spite of the small amplitude of hunting wheelset under the subcritical bifurcatuion. The frequency response analyses of bogie’s frame lateral accelerations show that the hunting oscillation is the main resonance in their vibration frequency responses, which can be controlled by the yaw soft constraint solutions.

关键词

高速列车 / 踏面磨耗 / 抗蛇行减振器 / 安全稳定性裕度

Key words

high-speed railway trainset / tread wear / anti-hunting damper / safety stability-margin

引用本文

导出引用
朴明伟;梁树林;孔维刚;兆文忠. 高速转向架非线性稳定性及安全裕度对策[J]. 振动与冲击, 2011, 30(8): 161-168
PIAO Ming-wei;LIANG Shu-lin;KONG Wei-gang;ZHAO Wen-zhong. Non-linear Stability of High-speed Bogies and their Safety Margin Strategy[J]. Journal of Vibration and Shock, 2011, 30(8): 161-168

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