魏伟.轨道系统高频振动分析的动态子结构法[J].计算力学学报,2000,17(3):343~348 |
| ![本文二维码信息](/download_upload_file.aspx?file_name=/uploadfile/two_dimensional_code_img/jslxxb/2000/3/20000362.png) 码上扫一扫! |
轨道系统高频振动分析的动态子结构法 |
Dynamic substructure method for analysis of railway track to high frequency excitation |
修订日期:1999-03-25 |
DOI:10.7511/jslx20003062 |
中文关键词: 动态子结构 轮轨 高频振动 轨道系统 高速铁路 |
英文关键词:dynamic substructure,wheel/rail,high frequency vibration,mechanic receptance,wheel/rail noise |
基金项目:辽宁省博士启动基金资助,牵引动力国家重点实验室基金资
助. |
魏伟 |
大连铁道学院机车车辆系!大连116028 |
摘要点击次数: 1431 |
全文下载次数: 8 |
中文摘要: |
提出了包含钢轨断面弹性变形、轨下不连续支承、横垂向交叉导的轨道高频振动分析模型。根据轮轨特点,提出适合轮轨高频振动分析的阻抗聚缩法。预测结果与试验结果吻合较好。分析表明约800Hz以下,钢轨振动表现为整体振动,再高频率钢轨发生断面弹性变形的振动。我国轨道系统第一、第二、阶二振频率分别为150Hz和320Hz,pinned-pinned共振频率的1280Hz。 |
英文摘要: |
A new railway track model for high frequency vibration, which includes the deformation of rail's cross\|section, the discrete supports and cross receptance, has been established. A wheel/rail contact characteristic have been introduced into the method of substructure impedance condensation to calculate the receptance. The result shows that rail vibrates as a rigid body below 800 Hz, the deformation of rail's cross\|section will happen at the frequency higher than 800 Hz, The model predicting results have a better coherence with the experiments one. Chinese railway track receptance has been predicted, the 1 st and 2 nd resonances are 150 Hz and 320 Hz respectively, the pinned\|pinned resonance is 1280 Hz. |
查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
|