本文選題：車門偏差 + 風(fēng)噪聲��； 參考：《機械設(shè)計與制造》2016年02期

【摘要】：針對某商用微型車車門制造偏差導(dǎo)致車內(nèi)風(fēng)噪聲偏大問題,首先對高速行駛中車門偏差的風(fēng)噪聲形成機理進行了分析,然后采用高速行駛關(guān)閉發(fā)動機滑行方法進行了道路風(fēng)噪聲試驗,對時域數(shù)據(jù)進行快速傅里葉變換,采用A計權(quán)總聲級及A計權(quán)1/3倍頻程頻譜對車內(nèi)噪聲信號分析。得到了高速行駛車門不同尺寸偏差與車內(nèi)風(fēng)噪聲的關(guān)系。結(jié)果表明,道路風(fēng)噪聲試驗對于評價風(fēng)噪聲的可行性;通過對車門尺寸偏差的控制能有效地降低車內(nèi)風(fēng)噪聲,研究結(jié)果對車門尺寸公差與密封性設(shè)計及制造裝配等工程實踐有重要意義。
[Abstract]:Aiming at the problem that the inner wind noise of a commercial mini car is caused by the manufacturing deviation of the door, the formation mechanism of the wind noise of the door deviation in high speed driving is analyzed. Then the road wind noise test is carried out by using the high speed driving and closing engine glide method, and the time domain data are analyzed by fast Fourier transform, and the noise signal inside the vehicle is analyzed by using A weighted total sound level and A weighted 1 / 3 times frequency range spectrum. The relationship between the different dimension deviation of the high speed driving door and the inner wind noise of the vehicle is obtained. The results show that the road wind noise test is feasible for evaluating the wind noise, and the control of the door size deviation can effectively reduce the wind noise inside the vehicle. The results are of great significance to the engineering practice of door dimension tolerance and sealing design and manufacturing assembly.
【作者單位】： 江西理工大學(xué)機電工程學(xué)院;上汽通用五菱汽車股份有限公司技術(shù)中心;
【基金】：江西省研究生創(chuàng)新基金(YC2014-S363)
【分類號】：U461.4;U463.834
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本文編號：2062016