考虑钢轨扣件特性的动力稳定车作业效果分析
陈太茂王立华黄洪燚王炯力赵泽民蒋维
Operation Effect Analysis of Dynamic Stabilizer Considering the Characteristics of Fasteners
CHEN TaimaoWANG LihuaHUANG HongyiWANG JiongliZHAO ZeminJIANG Wei
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作者信息:昆明理工大学机电工程学院，650500，昆明
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Affiliation:Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, 650500, Kunming, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.01.052
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中图分类号/CLCN:U213.5; U216.6
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栏目/Col:应用技术
摘要:
［目的］为了研究动力稳定装置激振频率和钢轨扣件力学特性对动力稳定车的作业效果影响和影响显著性，以便为动力稳定车作业提供参考。［方法］基于多体系统动力学理论建立考虑钢轨扣件力学特性的动力稳定装置-轨道动力学模型，采用有限元的方法建立动力稳定装置-道床的刚柔耦合动力学仿真模型；以动力稳定装置激振频率﹑扣件横向刚度和扣件横向阻尼为研究因素，轨枕横向加速度响应为稳定作业效果评价指标，进行数值模拟分析得到动力稳定作业效果的影响因素的显著性。［结果及结论］随着动力稳定装置的激振力幅值增大，轨枕的横向位移与加速度均单调增大；当激振频率逐渐增大，轨枕的横向位移单调减小，横向加速度先减小再增大，得到动力稳定装置最佳激振频率范围为30~36Hz；增大钢轨扣件横向刚度，轨枕横向加速度增大；增大钢轨扣件横向阻尼，轨枕横向加速度减小。基于响应面分析方法得到3个因素对轨枕横向加速度影响显著性的大小顺序为激振频率>扣件横向刚度>扣件横向阻尼。
Abstracts:
［Objective］ Research is conducted on the influence and significance of the excitation frequency of the dynamic stabilization device and the mechanical characteristics of rail fasteners on the operation effect of the dynamic track stabilizer in order to provide some reference for the operation of the dynamic stabilizer. ［Method］ Based on the multi-body system dynamics theory, a dynamic stabilization device-track dynamics model considering the mechanical characteristics of rail fasteners is established. A rigid-flexible coupling dynamics simulation model of the dynamic stabilization device-ballast bed is established by using the finite element method. With the excitation frequency of the dynamic stabilization device, the lateral stiffness and the lateral damping of the fastener as research factors, and the lateral acceleration response of the sleeper as the evaluation index of stable operation effect, a numerical simulation analysis is carried out to obtain the significance of the influencing factors for the dynamic stabilization operation effect. ［Result & Conclusion］ With the increase of the excitation force amplitude of the dynamic stabilization device, both the lateral displacement and the acceleration of the sleeper increase monotonically. When the excitation frequency gradually increases, the lateral displacement of the sleeper decreases monotonically, while the lateral acceleration first decreases and then increases. The obtained optimal excitation frequency range of the dynamic stabilization device is from 30 to 36 Hz. Increasing the lateral stiffness of the rail fastener leads to an increase of the sleeper lateral acceleration. Increasing the lateral damping of the rail fastener will reduce the sleeper lateral acceleration. Based on the response surface method, three factors influencing the sleeper lateral acceleration are excitation frequency, fastener lateral stiffness and fastener lateral damping in order of significance.
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