首页 | 本学科首页   官方微博 | 高级检索  
     

车辆-轨道系统垂向随机振动的辛方法分析
引用本文:吕峰,林家浩,张亚辉. 车辆-轨道系统垂向随机振动的辛方法分析[J]. 力学学报, 2008, 40(3): 381-387. DOI: 10.6052/0459-1879-2008-3-2007-428
作者姓名:吕峰  林家浩  张亚辉
作者单位:大连理工大学工程力学系,工业装备结构分析国家重点实验室,大连,116023;大连理工大学工程力学系,工业装备结构分析国家重点实验室,大连,116023;大连理工大学工程力学系,工业装备结构分析国家重点实验室,大连,116023
摘    要:将轨道视为无限长的周期结构,建立车辆轨道垂向耦合模型. 使用虚拟激励法将随机的轨道不平顺激励转化为确定性的简谐激励,再用辛数学方法求解轨道结构的频率响应特性和耦合系统的响应功率谱. 整个计算模型只有26个自由度,求解过程快速而精确.数值算例中,将该方法与常规有限元方法进行了比较,验证了方法的高效性和正确性,讨论了车辆速度对系统随机响应的影响. 

关 键 词:车辆  轨道  随机振动  虚拟激励法  辛数学方法
收稿时间:2007-09-12
修稿时间:2007-12-26

RANDOM VIBRATION ANALYSIS OF VEHICLE-TRACK COUPLING SYSTEMS USING SYMPLECTIC METHOD
Lu Feng,Lin Jiahao,Zhang Yahui. RANDOM VIBRATION ANALYSIS OF VEHICLE-TRACK COUPLING SYSTEMS USING SYMPLECTIC METHOD[J]. chinese journal of theoretical and applied mechanics, 2008, 40(3): 381-387. DOI: 10.6052/0459-1879-2008-3-2007-428
Authors:Lu Feng  Lin Jiahao  Zhang Yahui
Affiliation:State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, ChinaState Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, ChinaState Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China
Abstract:The vertical coupling model of vehicle-track systems isset up in the case of the track as an infinite periodic structure. Therandom irregularity excitation of the rail is transformed into adeterministic harmonic excitation with the pseudo excitation method, and thefrequency response of the track and the power spectrum density (PSD) of thesystem response are analyzed using the symplectic algorithm. In addition,there are only 26 DOFs in the computational model to have an efficient andaccurate solution. The model is verified with the conventional FEM, and theinfluence of the vehicle velocity on the system vibration is investigated.
Keywords:vehicle  track  random vibration  pseudo-excitation  symplectic  
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《力学学报》浏览原始摘要信息
点击此处可从《力学学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号