| 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 |
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| 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. |
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