CAJ | 학술논문

针对某前置后驱乘用车在一定发动机转速范围内产生车内轰鸣声的现象，建立了该车传动系统的扭振理论计算模型，获取了传动系统的扭振模态信息。进行了该车传动系统扭振强迫振动计算分析与扭振测试，验证了理论计算的准确性，并明确了该车低速轰鸣声是由传动系统扭振导致，进而可采取相关措施降低扭振幅值，避免低速车内轰鸣声产生。
침대모전치후구승용차재일정발동궤전속범위내산생차내굉명성적현상，건립료해차전동계통적뉴진이론계산모형，획취료전동계통적뉴진모태신식。진행료해차전동계통뉴진강박진동계산분석여뉴진측시，험증료이론계산적준학성，병명학료해차저속굉명성시유전동계통뉴진도치，진이가채취상관조시강저뉴진폭치，피면저속차내굉명성산생。
To research the interior booming noise of a FR car occurring in a certain engine speed range, we build a theoretical model for drivetrain torsional vibration and obtain torsional vibration modal information. Then by means of forced vibration analysis and torsional vibration test, the accuracy of the theoretical calculation is verified. It is shown that the low speed booming noise of the car is caused by the torsional vibration of the drivetrain, therefore corresponding measures can be adopted to reduce amplitude of torsional vibration, and thus avoid low speed interior booming noise.