噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2015年
1期
141-144
,共4页
康强%吴昱东%邓江华%何森东
康彊%吳昱東%鄧江華%何森東
강강%오욱동%산강화%하삼동
振动与波%扭振%传动系统%前置后驱
振動與波%扭振%傳動繫統%前置後驅
진동여파%뉴진%전동계통%전치후구
vibration and wave%torsional vibration%drivetrain%front engine and rear wheel drive (FR)
针对某前置后驱车,建立了其传动系的扭振当量模型,通过自由振动计算分析获得了传动系的扭振模态,与整车传动系扭振测试结果对比,验证了计算的正确性。基于传动系扭振当量模型,分析了各部件扭转刚度及转动惯量对扭振模态的灵敏度:系统第3阶扭振模态可以通过改变轮胎扭转刚度或者转动惯量来调谐;第4阶扭振模态可以使用半轴的扭转刚度、轮胎的扭转刚度或转动惯量调谐;第5阶扭振模态的调谐参数为半轴扭转刚度和传动轴转动惯量。这些因素的分析可为车辆扭转振动特性的改善提供可参考的依据。
針對某前置後驅車,建立瞭其傳動繫的扭振噹量模型,通過自由振動計算分析穫得瞭傳動繫的扭振模態,與整車傳動繫扭振測試結果對比,驗證瞭計算的正確性。基于傳動繫扭振噹量模型,分析瞭各部件扭轉剛度及轉動慣量對扭振模態的靈敏度:繫統第3階扭振模態可以通過改變輪胎扭轉剛度或者轉動慣量來調諧;第4階扭振模態可以使用半軸的扭轉剛度、輪胎的扭轉剛度或轉動慣量調諧;第5階扭振模態的調諧參數為半軸扭轉剛度和傳動軸轉動慣量。這些因素的分析可為車輛扭轉振動特性的改善提供可參攷的依據。
침대모전치후구차,건립료기전동계적뉴진당량모형,통과자유진동계산분석획득료전동계적뉴진모태,여정차전동계뉴진측시결과대비,험증료계산적정학성。기우전동계뉴진당량모형,분석료각부건뉴전강도급전동관량대뉴진모태적령민도:계통제3계뉴진모태가이통과개변륜태뉴전강도혹자전동관량래조해;제4계뉴진모태가이사용반축적뉴전강도、륜태적뉴전강도혹전동관량조해;제5계뉴진모태적조해삼수위반축뉴전강도화전동축전동관량。저사인소적분석가위차량뉴전진동특성적개선제공가삼고적의거。
A theoretical torsional vibration model for the drivetrain of a front-engine-and-rear-wheel-drive (FR) car was built. Torsional vibration modal frequencies were calculated by free vibration analysis and validated by comparing the re-sults with those of torsional vibration test of the car. Based on this model, the sensitivity of the torsional stiffness and mo-ment of inertia of different components to the drivetrain modal frequencies was analyzed. It is shown that the 3rd order mod-al frequency can be tuned by adjusting the torsional stiffness or moment of inertia of the wheels;the 4th order modal frequen-cy can be tuned by adjusting the torsional stiffness or moment of inertia of the wheel or the torsional stiffness of the half shaft;the 5th order modal frequency can be tuned by adjusting the torsional stiffness of the half shaft or the moment of iner-tia of the driving shaft.