高速列车明线交会流致振动耦合响应分析

验模态分解方法自适应分解，获取各本征模态层，并与流致振动响应数据进行对比分析。结果表明，车体振动位移的
频率分布与加载的会车压力波频率相吻合；车内气压级在 6.1 Hz、14.67 Hz 处较大，分别与耦合系统的第一阶非刚性
模态频率与结构的第一阶模态频率相吻合；同时验证会车压力波在车厢流致振动耦合模型下对车内气压影响机理分
收稿日期: 2018-07-19；收到修改稿日期: 2018-08-19 基金项目: 国家自然科学基金资助项目（51475387） 作者简介: 周建容（1993-），女，四川三台县人，硕士研究生，专业方向为振动噪声、空气动力学。 通信作者: 陈春俊（1967-），男，四川蒲江县人，教授，博士，研究方向为仪器科学与技术、测控技术、空气动力学等。
ZHOU Jianrong, CHEN Chunjun, AI Yongjun, LI Xin (School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China)
Abstract: In order to explore the influence mechanism of the pressure wave of trains passing each other on the internal pressure of a high-speed train under the action of flow induced vibration, an online test of a high-speed train of the body structure, flow field and the coupling system is set up by the multiple equivalent method, and the modal analysis of the coupling system is carried out. The coupled system of the high-speed train body is loaded by the measured pressure signal of trains passing each other, and the coupling response of the highspeed train is analyzed. Empirical mode decomposition method is used to self-adaptively decompose the measured air pressure data. The intrinsic mode layers are obtained and compared with the simulation data. The results show that the frequency distribution of vibration displacement of body structure coincides with the frequency of the loaded pressure wave. The internal pressure level of the high-speed train is larger at 6.1 Hz and 14.67 Hz, respectively, which coincides with the first non-rigid modal frequency of the coupling system and the first modal frequency of the structure. At the same time, verifying the correctness of the mechanism analysis of the influence of the pressure wave of trains passing each other on the internal pressure of the high-
第 45 卷 第 5 期
周建容，等：高速列车明线交会流致振动耦合响应分析
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speed train by the flow-induced vibration coupling model. Keywords: pressure wave of trains passing each other; flow-induced vibration coupling; pressure shock; vibration response
第 45 卷 第 5 期 2019 年 5 月
中国测试 CHINA MEASUREMENT & TEST
Vol.45 No.5 May, 2019
doi: 10.11857/j.issn.1674-5124.2018070077
高速列车明线交会流致振动耦合响应分析
周建容， 陈春俊， 艾永军， 李 新
(西南交通大学机械工程学院，四川 成都 610031)
摘 要: 为探究高速列车在流致振动作用下会车压力波对车内气压的影响机理，针对某线路试验高速动车组采用多
重等效方法建立有限元车厢、流场以及耦合系统模型，并进行耦合系统模态分析；通过列车交会侧传感器实测会车
压力波信号，对车厢耦合系统进行气压冲击加载，分析车内流致振动耦合响应情况；将线路实测车会车压力波; 流致振动耦合; 气压冲击; 振动响应
中图分类号：U260.16
文献标志码: A
文章编号: 1674–5124(2019)05–0134–06
Coupled response analysis of flow-induced vibration of high-speed trains passing each other