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文中针对新研发的轻型载货汽车垂直振动大的问题,运用了有限元方法和模态分析技术,对车架及货箱进行有限元建模和模态分析,得到其固有频率和振型特征。找出了原车型振动大的主要原因,提出了增设衬梁的改进方案,最大限度地避免了共振现象的发生,为相应车型的研发提供了参考依据。
In this paper, the finite element method and modal analysis technique are applied to the newly developed light truck with large vertical vibration. The finite element method and the modal analysis of the frame and the container are carried out to obtain the natural frequencies and mode shapes . The main reason for the large vibration of the original model was found. An improved scheme of adding liner was proposed to avoid the resonance phenomenon to the maximum extent and provide a reference for the research and development of the corresponding model.