| 370t凹底车振动平稳性分析 |
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| 引用本文： | 方吉,兆文忠,李海洋.370t凹底车振动平稳性分析[J].大连铁道学院学报,2011(2):5-11. |
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| 作者姓名： | 方吉 兆文忠 李海洋 |
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| 作者单位： | 大连交通大学交通运输工程学院;长春轨道客车装备有限责任公司; |
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| 摘 要： | 370 t凹底车是目前载重量最大的凹底车,考虑到结构振动对车辆平稳性的影响,把凹底架、大底架和小底架做成柔性体,建立刚柔混合模型进行仿真分析.对比美国5级谱和铁科院实测谱,并通过傅氏逆变换转换为时域信号,用模态综合法进行仿真分析并与试验数据进行了对比,发现美国5级谱的垂向不平顺比我国实际线路情况要恶劣,短波轨道不平顺对该车的结构振动有较大的影响.
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| 关 键 词： | 短波轨道不平顺 结构振动 模态综合法 平稳性 |
Vibration Stability Analysis of 370t Depressed Bottom Container |
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| FANG Ji,ZHAO Wen-zhong,LI Hai-yang.Vibration Stability Analysis of 370t Depressed Bottom Container[J].Journal of Dalian Railway Institute,2011(2):5-11. |
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| Authors: | FANG Ji ZHAO Wen-zhong LI Hai-yang |
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| Institution: | FANG Ji1,ZHAO Wen-zhong1,LI Hai-yang2(1.School of Traffic and Transportation Engineering,Dalian Jiaotong University,Dalian 116028,China,2.Changchun Railway Coach Co,Ltd.,Changchun 130052,China) |
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| Abstract: | Considering the effects of structural vibration to the stability of full vehicle,the depressed underframe,big underframe and small underframe are taken as a flex body,and a rigid-flex hybrid model is constructed for simulation analysis.By transfering into time domain signals under inverse fourier transform,simulation analysis is conducted using component mode synthesis,and the spectrum of America five grade irregularity and measured by railway academy of sciences is used for comparing the simulation and tes... |
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| Keywords: | short wavelength irregularity structural vibration component mode synthesis stability |
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