摘要
针对某客车在70 km/h车速下行驶时车架发生异常振动情况展开研究,通过对车架进行有限元模态分析、频率响应分析了解车架的动态特性,并结合整车道路测试试验得出的分析结果,找出了车架异常振动的原因是车轮在该车速下的激励频率与车架固有频率相重叠导致的共振所引起的。针对引起该车架异常振动的激励源提出了改进建议,减弱客车车架的异常振动。
In this article, analysis and research on abnormal vibration of the frame when the passenger car are running at the speed of 70 km/h. By simple understanding of the frame dynamic behavior with modal analysis and frequency response analysis, furthermore combing with the road test, it turns out that it is resonance causing the frame abnormal vibration due to the excitation frequency of wheel under the speed and the natural frequency of the frame coinciding. Suggestions for improvement are put forward, to weaken the abnormal vibration of the frame.
出处
《汽车科技》
2013年第5期37-40,共4页
Auto Sci-Tech
关键词
车架
异常振动
模态分析
频响分析
道路测试
the frame
abnormal vibration
modal analysis
frequency response analysis
road test
