| 发动机结构噪声的计算机仿真分析 |
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| 引用本文： | 曾金玲,宋春丽,雷雨成,李康. 发动机结构噪声的计算机仿真分析[J]. 汽车技术, 2006, 0(7): 13-16 |
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| 作者姓名： | 曾金玲 宋春丽 雷雨成 李康 |
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| 作者单位： | 同济大学;第一汽车集团公司技术中心 |
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| 摘 要： | 以一台四缸发动机为例,应用计算机仿真技术分析了发动机的结构振动噪声。首先建立发动机总成有限元模型,通过模态分析,为发动机的结构修改提供依据。根据车用发动机的实际使用工况,在不同转速及爆发压力下对其进行动力学计算,得到发动机的表面振动速度级。通过改进发动机结构,使发动机的表面振动速度级降低了5.6dB(A)。
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| 关 键 词： | 发动机 振动噪声 仿真 |
| 文章编号： | 1000-3703(2006)07-0013-04 |
| 收稿时间： | 2006-05-11 |
The Computer Simulation Analysis of Engine Structure Noise |
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| Zeng Jinling,Song Chunli,Lei Yucheng,Li Kang. The Computer Simulation Analysis of Engine Structure Noise[J]. Automobile Technology, 2006, 0(7): 13-16 |
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| Authors: | Zeng Jinling Song Chunli Lei Yucheng Li Kang |
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| Abstract: | Take an engine with four cylinders as on example,and apply computer simulation technology to analyze engine structure vibration and noise.First establish finite element model of engine assembly,and provide evidence for the structure modification of engine through mode analysis.According to the actual operational condition of engine,calculate dynamics with different rotational speed and breakout pressure,and get the surface vibration speed stage of engine.Through improving the structure of engine,the surface vibration speed stage of engine is reduced 5.6 dB(A). |
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| Keywords: | Engine Vibration noise Simulation |
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