兰洋;沈颖刚;陈贵升;李晓宁;
昆明理工大学交通工程学院
摘要：本文应用复合三线摆法测得了某轿车动力总成的相关参数,对动力总成的激振源进行了分析。在ADAMS下建立了动力总成悬置系统的动力学仿真模型,对悬置系统进行了模态分析,结果表明该系统存在耦合现象,阻尼相比刚度对悬置系统影响较小;对怠速工况下悬置元件上受力和位移情况进行时域和频域分析,发现该悬置系统中前悬置是主要的振动传递路径;解释了曲线波动原因,指出Z向是振动控制的主要方向,Z向存在变形位移不一致,说明悬置系统在作Z方向的自由振动的同时,还在参与绕X和Y方向的角振动,指出下一步改进设计中,应该降低系统振动的耦合程度。
关键词： ADAMS;;动力总成悬置;;振动;;仿真
Abstract: The paper measures parameters of
power train on certain car through a complex three-line pendulum,and analyzes
the excitation source of power train.A stimulation dynamic model of power-train
mount system is made on ADAMS to do analysis.The results show that the coupling
exists in the system and damping has less effect on the suspension system,while
compared to the stiffness.Analysis on stress and displacement to suspending
parts has been carried out during some period and frequently at idle
speed,which indicates that front suspending system transmits critically
vibration.The reasons are clarified to wave fluctuation.It is presented that
Z-direction is the key subject to control vibration.Deformation and
displacement in Z-direction implies that suspending system vibrate angularly in
X and Y-direction.Low coupling vibration is what should be done in future
design.
Keywords:ADAMS;Power-train
Mount;Vibration;Simulation
基金项目: 云南昆明官渡区科技计划项目资助(管科工字09号);; 云南省中青年学术技术带头人后备人才专项基金资助(2007py01-07)
参考文献：
[1]李增刚.ADAMS入门详解与实例[M].北京:国防工业出版社,2005.
[2]方锡邦.轿车动力总成悬置系统隔振性能的仿真研究.合肥工业大学学报,2003,26,(2):236-241.
[3]吴炎庭,袁卫平.内燃机噪声振动与控制[M].机械工业出版社,2005.3.124-126.
[4]C.K.H.Dharan.Design of Engine Accessory
Mountings SystemsSubject to large Vibration[J].International
AutomobileEngineering Congress.Part 2.1973.
[5]李梅林,谢惠民.车用发动机噪声测试研究[J].湖南大学学报(自然科学版),2004,31(3):35-38.
[6]上官文斌.发动机悬置系统的优化设计[J].汽车工程,1992,14(2):103-110.
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