基于高速列车噪声特性优化的牵引变压器滑槽吊装悬挂参数研究
周顺元1，肖新标*,1，张捷2，赵明花1,3，黄佳程1
（1.西南交通大学 牵引动力国家重点实验室，四川 成都 610031；2.四川大学 高分子材料工程国家重点实验室，四川 成都 610065；3.国家高速列车技术创新中心，山东 青岛 266111）
摘要：滑槽吊装方式在高速列车轻量化设计中存在明显优势，基于有限元法，建立滑槽吊装下车体－设备耦合振动分析模型，其中车体部分考虑型材厚度采用壳单元建模，而吊装部分将减振器等效为考虑刚度和阻尼特性的弹簧单元，通过谐响应分析计算单位力下车体振动响应作为中间结果。基于间接边界元法建立车体声辐射仿真分析模型，且考虑牵引变压器实际负载工况下的工频谐波激励影响，利用映射后的车体法向振动速度计算牵引变压器上方车体的辐射声功率级，根据声辐射仿真结果进一步探究悬挂刚度和阻尼比对车体辐射声功率的影响。结果表明：滑槽吊装下车体辐射声功率级在350 Hz工频处最为突出，悬挂刚度对其影响较小，悬挂阻尼比影响较大，且车体辐射声功率级随着悬挂阻尼比的增加而增大。
关键词：高速列车；滑槽吊装；有限元；边界元；声辐射
中图分类号：U270.1+6 文献标志码：A doi：10.3969/j.issn.1006-0316.2023.12.006
文章编号：1006-0316 (2023) 12-0034-07
Research on Chute Hoisting Suspension Parameters of Traction Transformer Based on Noise Characteristic Optimization of High-Speed Train
ZHOU Shunyuan1，XIAO Xinbiao1，ZHANG Jie2，ZHAO Minghua1,3，HUANG Jiacheng1
( 1.State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China; 2.State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; 3.National Innovation Center of High Speed Train, Qingdao 266111, China )
Abstract：The chute hoisting method has obvious advantages in the lightweight design of high-speed train. On the basis of the finite element method, the coupled vibration analysis model of the vehicle body and equipment under the chute hoisting is established. In the part of the vehicle body, the shell element is used for modeling considering the thickness of the profile, and in the hoisting part, the shock absorber is equivalent to the spring element considering the stiffness and damping characteristics. The vibration response of the vehicle body under unit force is calculated by harmonic response analysis as the intermediate result. The vehicle body acoustic radiation simulation analysis model is established based on the indirect boundary element method, and considering the influence of the power frequency harmonic excitation under the actual load condition of the traction transformer, the mapped normal vibration velocity of the vehicle body is used to calculate the radiant sound power level of the vehicle body above the traction transformer, and the influence of the suspension stiffness and damping ratio on the vehicle body radiant sound power is further explored according to the simulation results of acoustic radiation. The results show that the radiant sound power level of the vehicle body is most prominent at the power frequency of 350 Hz when the chute is hoisted, and the influence of the suspension stiffness is small, while the influence of the suspension damping ratio is large, and the radiant sound power level of the vehicle body increases with the increase of the suspension damping ratio.
Key words：high-speed train；chute hoisting；FEM；BEM；acoustic radiation
———————————————
收稿日期：2023-03-07
基金项目：国家自然科学基金（U1934203）
作者简介：周顺元（1997－），男，江苏常州人，硕士研究生，主要研究方向为轨道列车减振降噪，E-mail：1318197663@qq.com。*通讯作者：肖新标（1978－），男，广东阳春人，博士，副研究员、博士生导师，主要研究方向为铁路噪声与振动，E-mail：xiao@swjtu.edu.cn。
（1.西南交通大学 牵引动力国家重点实验室，四川 成都 610031；2.四川大学 高分子材料工程国家重点实验室，四川 成都 610065；3.国家高速列车技术创新中心，山东 青岛 266111）
摘要：滑槽吊装方式在高速列车轻量化设计中存在明显优势，基于有限元法，建立滑槽吊装下车体－设备耦合振动分析模型，其中车体部分考虑型材厚度采用壳单元建模，而吊装部分将减振器等效为考虑刚度和阻尼特性的弹簧单元，通过谐响应分析计算单位力下车体振动响应作为中间结果。基于间接边界元法建立车体声辐射仿真分析模型，且考虑牵引变压器实际负载工况下的工频谐波激励影响，利用映射后的车体法向振动速度计算牵引变压器上方车体的辐射声功率级，根据声辐射仿真结果进一步探究悬挂刚度和阻尼比对车体辐射声功率的影响。结果表明：滑槽吊装下车体辐射声功率级在350 Hz工频处最为突出，悬挂刚度对其影响较小，悬挂阻尼比影响较大，且车体辐射声功率级随着悬挂阻尼比的增加而增大。
关键词：高速列车；滑槽吊装；有限元；边界元；声辐射
中图分类号：U270.1+6 文献标志码：A doi：10.3969/j.issn.1006-0316.2023.12.006
文章编号：1006-0316 (2023) 12-0034-07
Research on Chute Hoisting Suspension Parameters of Traction Transformer Based on Noise Characteristic Optimization of High-Speed Train
ZHOU Shunyuan1，XIAO Xinbiao1，ZHANG Jie2，ZHAO Minghua1,3，HUANG Jiacheng1
( 1.State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China; 2.State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; 3.National Innovation Center of High Speed Train, Qingdao 266111, China )
Abstract：The chute hoisting method has obvious advantages in the lightweight design of high-speed train. On the basis of the finite element method, the coupled vibration analysis model of the vehicle body and equipment under the chute hoisting is established. In the part of the vehicle body, the shell element is used for modeling considering the thickness of the profile, and in the hoisting part, the shock absorber is equivalent to the spring element considering the stiffness and damping characteristics. The vibration response of the vehicle body under unit force is calculated by harmonic response analysis as the intermediate result. The vehicle body acoustic radiation simulation analysis model is established based on the indirect boundary element method, and considering the influence of the power frequency harmonic excitation under the actual load condition of the traction transformer, the mapped normal vibration velocity of the vehicle body is used to calculate the radiant sound power level of the vehicle body above the traction transformer, and the influence of the suspension stiffness and damping ratio on the vehicle body radiant sound power is further explored according to the simulation results of acoustic radiation. The results show that the radiant sound power level of the vehicle body is most prominent at the power frequency of 350 Hz when the chute is hoisted, and the influence of the suspension stiffness is small, while the influence of the suspension damping ratio is large, and the radiant sound power level of the vehicle body increases with the increase of the suspension damping ratio.
Key words：high-speed train；chute hoisting；FEM；BEM；acoustic radiation
———————————————
收稿日期：2023-03-07
基金项目：国家自然科学基金（U1934203）
作者简介：周顺元（1997－），男，江苏常州人，硕士研究生，主要研究方向为轨道列车减振降噪，E-mail：1318197663@qq.com。*通讯作者：肖新标（1978－），男，广东阳春人，博士，副研究员、博士生导师，主要研究方向为铁路噪声与振动，E-mail：xiao@swjtu.edu.cn。
设为首页 | 加入收藏 | 免责条款
《机械》杂志版权所有 Copyright©2008-2012 Jixiezazhi.com All Rights Reserved
电话：028-85925070 传真：028-85925073 E-mail：jixie@vip.163.com
地址：四川省成都锦江工业开发区墨香路48号 邮编：610063
Powered by PageAdmin CMS