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汽车传动系扭振阻尼的确定是目前汽车动力传动系扭振研究中所面临的困难的课题之一。本文提出了一种采用整车自由衰减振动试验和模态分析理论识别传动系扭振阻尼及驱动轮胎扭振等效粘性阻尼的方法。叙述了试验方法和分析原理,指出了这种阻尼测试方法进一步发展的途径。
The determination of torsional vibration damping of automobile transmission system is one of the difficult subjects in the study of torsional vibration of automobile powertrain. This paper presents a method to identify the torsional vibration damping of transmission and the equivalent viscous damping for driving torsional vibration of the tire by adopting the vehicle free-decay vibration test and modal analysis theory. Describes the test method and analysis principle, and points out the ways of further development of this damping test method.