| 两自由度系统的自由振动实验 |
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| 引用本文： | 余亚敏,周晓冰,陆晶晶.两自由度系统的自由振动实验[J].汽车实用技术,2020(2):73-77. |
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| 作者姓名： | 余亚敏 周晓冰 陆晶晶 |
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| 作者单位： | 中汽研汽车检验中心(宁波)有限公司整车试验研究部,浙江 宁波 315104;长安大学,陕西 西安 710061;大连理工大学,辽宁大连 116024 |
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| 摘 要： | 汽车行驶过程中会因为地面不平引起的冲击载荷、发动机工作的振动等原因而产生振动,当汽车振动的频率与车身固有频率相接近时,车身会产生很大的垂向加速度,不仅会使驾乘人员感到不适,还会造成车身结构的损坏。因此,对于汽车振动模型的研究就显得尤其重要。以搭建的两自由度系统的试验模型为研究对象,求得其在不同初始条件下实验的自由振动响应,来验证理论求解模型的正确性,为汽车平顺性的改善提供理论依据。
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| 关 键 词： | 两自由系统试验模型 汽车平顺性 响应 |
Experimental verification of free vibration of two-degree-of-freedom system |
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| Authors: | Yu Yamin Zhou Xiaobing Lu Jingjing |
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| Institution: | (China Automotive Research Automotive Testing Center(Ningbo)Co.,Ltd.,Vehicle Test and Research Department,Zhejiang Ningbo 315104;Chang'an University,Shaanxi Xi'an 710061;Dalian University of Technology,Liaoning Dalian 116024) |
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| Abstract: | During the driving process,the vibration will be generated due to the impact load caused by the uneven ground,the vibration of the engine working,etc.When the frequency of the vehicle vibration is close to the natural frequency of the vehicle body,the vehicle body will generate a large vertical acceleration,which will not only drive The passenger feels uncomfortable and can also cause damage to the body structure.Therefore,research on automotive vibration models is particularly important.The experimental model of the two-degree-of-freedom system is taken as the research object,and the free vibration response of experiment under different initial conditions is obtained and verify the correctness of the theoretical solution model for the smoothness of the car. |
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| Keywords: | 1/4 automotive test model Ehicle ride comfort Response |
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