液体橡胶复合转臂节点动态特性及非线性力学模型研究

doi:10.3901/JME.260197

机械工程学报 ›› 2025, Vol. 62 ›› Issue (6): 337-345,358.doi: 10.3901/JME.260197

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液体橡胶复合转臂节点动态特性及非线性力学模型研究

李旭阳, 代亮成, 池茂儒, 赵明花, 周荻

西南交通大学轨道交通运载系统全国重点实验室成都 610031

收稿日期:2025-05-11 修回日期:2025-11-09 出版日期:2026-03-20 发布日期:2026-05-12
作者简介:李旭阳,男,2001年出生。主要研究方向为车辆系统动力学。E-mail:lixuyang200102@163.com
代亮成(通信作者),男,1991年出生,博士,助理研究员。主要研究方向为车辆系统动力学。E-mail:liangcheng0812@163.com
基金资助:
国家重点研发计划(2022YFB4301303)和中央高校基本科研业务费专项资金(2682024CX047)资助项目。

Research on the Dynamic Characteristics and Nonlinear Mechanical Model of the Liquid Rubber Composite Rotary Arm Joint

LI Xuyang, DAI Liangcheng, CHI Maoru, ZHAO Minghua, ZHOU Di

State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031

Received:2025-05-11 Revised:2025-11-09 Online:2026-03-20 Published:2026-05-12

摘要/Abstract

摘要： 为研究铁道车辆液体橡胶复合转臂节点动态特性，建立液体橡胶复合转臂节点非线性力学模型，并探究液体橡胶复合转臂节点对车辆动力学性能的影响。基于线性理论开展液体橡胶复合转臂节点频响特性分析，探究液体橡胶复合转臂节点频变刚度机理。搭建考虑橡胶主簧动态特性非线性、液室体积柔度非线性和流体阻尼非线性的液体橡胶复合转臂节点非线性力学模型。开展不同频率、不同幅值位移激励下的液体橡胶复合转臂节点台架试验，验证所建立力学模型的准确性。建立液体橡胶复合转臂节点与车辆动力学的联合仿真模型，分析液体橡胶复合转臂节点对车辆动力学性能的影响。结果表明：橡胶主簧与液力机构之间的相互耦合作用使液体橡胶复合转臂节点的动态特性具有频率相关性和幅值相关性；所建立的非线性力学模型能够准确描述液体橡胶复合转臂节点的频变特性和幅变特性；安装有液体橡胶复合转臂节点的车辆与安装有传统橡胶转臂节点的车辆相比，有更高的非线性临界速度、更优的曲线通过能力和曲线通过安全性。

关键词: 液体橡胶复合转臂节点, 非线性力学模型, 频变特性, 幅变特性

Abstract: In order to investigate the dynamic characteristics of the liquid rubber composite rotary arm joint, establish a nonlinear mechanical model for the liquid rubber composite rotary arm joint of railway vehicles and explore the impact of the liquid rubber composite rotary arm joint on the dynamic performance of the vehicles. Based on the linear theory, the analysis of the frequency response characteristics of the liquid rubber composite rotary arm joint is conducted, and the mechanism of frequency-variable stiffness is investigated. A nonlinear mechanical model of the liquid rubber composite rotary arm joint is established, taking into account the nonlinearity of the dynamic characteristics of the rubber main spring, the nonlinearity of the volumetric compliance of chamber, and the nonlinearity of fluid damping. Bench tests of the liquid rubber composite rotary arm joint under various frequencies and amplitude displacement excitations are conducted to verify the accuracy of the established mechanical model. The co-simulation model of the liquid rubber composite rotary arm joint and vehicle dynamics is established to analyze the impact on the vehicle's dynamic performance. The results show that the mutual coupling effect between the rubber main spring and the hydraulic mechanism endows the liquid rubber composite rotary arm joint with frequency dependency and amplitude dependency；the established nonlinear mechanical model can accurately describe the frequency-dependent and amplitude-dependent characteristics of the liquid rubber composite rotary arm joint；vehicles equipped with liquid rubber composite rotary arm joint have a higher nonlinear critical speed, better curve passing capabilities and curve passing safety compared to those with traditional rubber rotary arm joint.

Key words: liquid rubber composite rotary arm joint, nonlinear mechanical model, frequency-dependent characteristics, amplitude-dependent characteristics

中图分类号:

U270

李旭阳, 代亮成, 池茂儒, 赵明花, 周荻. 液体橡胶复合转臂节点动态特性及非线性力学模型研究[J]. 机械工程学报, 2025, 62(6): 337-345,358.

LI Xuyang, DAI Liangcheng, CHI Maoru, ZHAO Minghua, ZHOU Di. Research on the Dynamic Characteristics and Nonlinear Mechanical Model of the Liquid Rubber Composite Rotary Arm Joint[J]. Journal of Mechanical Engineering, 2025, 62(6): 337-345,358.

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链接本文: http://www.cjmenet.com.cn/CN/10.3901/JME.260197

http://www.cjmenet.com.cn/CN/Y2025/V62/I6/337

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液体橡胶复合转臂节点动态特性及非线性力学模型研究

Research on the Dynamic Characteristics and Nonlinear Mechanical Model of the Liquid Rubber Composite Rotary Arm Joint

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