动力稳定装置-轨道系统横向动力学响应分析

doi:10.16180/j.cnki.issn1007-7820.2019.08.002

摘要/Abstract

摘要：

针对不同道床工况下轨道动力稳定车作业时轨枕的动力学响应的规律和最优作业参数选择的问题,文中建立了动力稳定装置-轨道系统横向动力学模型。利用MATLAB软件结合数值积分法对动力学模型进行了仿真求解,得到了不同道床工况下的轨道动力稳定车作业时轨枕动力学响应规律和动力稳定装置最优激振频率。结果表明,在同一激振频率范围内,随着道床横向刚度和阻尼的增大,轨枕横向动力学响应均值逐渐变小。文中的道床工况得到最优激振频率为31~33 Hz。

关键词: 多体动力学, 动力稳定装置, 数值积分, 横向阻力, 轨道动力稳定车, 有砟轨道

Abstract:

The dynamic response discipline of the sleeper and the selection of the optimal operating parameters were studied for the track dynamic stabilizer under different track conditions. A lateral dynamics model of the dynamic stabilize unit-track system was established. The dynamic model was simulated by MATLAB software combined with numerical integration method. The dynamic response law of the sleeper and the optimal excitation frequency of the dynamic stabilize unit were obtained when the track dynamic stabilizer was under different track conditions. The research results showed that in the same excitation frequency range, with the increase of lateral stiffness and damping of the ballast bed, the average lateral dynamic response of the sleeper became smaller. Meanwhile, the optimal excitation frequency was 31~33 Hz for the track bed conditions studied in this paper.

Key words: multi-body dynamics, dynamic stabilize unit, numerical integration, lateral resistance, track dynamic stabilizer, ballasted track

中图分类号:

TP202

项永志,王立华,栗先增,王桐. 动力稳定装置-轨道系统横向动力学响应分析[J]. 电子科技, 2019, 32(8): 7-11.

XIANG Yongzhi,WANG Lihua,LI Xianzeng,WANG Tong. Analysis of Lateral Dynamic Response for Dynamic Stabilize unit-Track System[J]. Electronic Science and Technology, 2019, 32(8): 7-11.

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参数	数值	参数	数值
m₁/kg	3 500	k₃/N·m^-1	1.47×108
m₂/kg	3 600	c₃/N·s·m^-1	2.85×105
m₃/kg	1 600	ω/Hz	0~45
k₂/N·m^-1	5.56×10⁷	M_e/kg·m	4

道床工况	横向刚度k₆/N·m	横向阻尼c₆/N·s·m^-1
工况一	1×10⁸	8×10⁴
工况二	1.1×10⁸	8.8×10⁴
工况三	1.2×10⁸	9.6×10⁴
工况四	1.3×10⁸	1.04×10⁵