| 履带式车辆内部噪声特性分析 |
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| 引用本文： | 赵新乐,陈光,肖作江,翁占坤.履带式车辆内部噪声特性分析[J].吉林工学院学报,2008,29(5):562-565. |
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| 作者姓名： | 赵新乐 陈光 肖作江 翁占坤 |
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| 作者单位： | 长春理工大学生命科学技术学院,吉林长春130022 |
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| 摘 要： | 对履带式车辆内部噪声级和噪声频谱进行了测试,分析了主要噪声源,给出了驾驶室中噪声的空间分布。行驶时车辆内部各点的声压级均大于100 dB（A）,在驾驶室中的噪声分布呈现前低后高、上低下高的特性。发动机的噪声辐射及其对车体结构的动态激励是驾驶室中最主要的噪声源,而行走系统对驾驶室内噪声的影响相对次要。倍频程曲线表明,低频处的声压级明显高于中高频处的声压级。
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| 关 键 词： | 履带车辆 噪声 倍频程频谱 |
Analysis of the noise features inside a track-laying vehicle |
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| ZHAO Xin-le,CHEN Guang,XIAO Zuo-jiang,WENG Zhan-kun.Analysis of the noise features inside a track-laying vehicle[J].Journal of Jilin Institute of Technology,2008,29(5):562-565. |
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| Authors: | ZHAO Xin-le CHEN Guang XIAO Zuo-jiang WENG Zhan-kun |
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| Institution: | School of Life Science and Technology;Changchun University of Science and Technology;Changchun 130022;China |
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| Abstract: | By testing the noise level and spectrum in a track-laying vehicle,the main sources of the noises are analyzed and their distribution in crewman-room is given.The sound pressure at all points in the crewman-room is over 100 dB(A) while the vehicle is running,and the noise distribution is lower in the front and up but higher in the back and down.The two main sources of noise are the radiation from the engine and the dynamic excitation radiated to the vehicle body.The contribution from the moving system to the... |
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| Keywords: | track-laying vehicle noise octave spectrum |
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