不同内装等价分布方式下空调振动对侧墙振动的影响

Influence of air conditioning vibration on side wall vibration under different interior equivalent distribution modes

文章通过模态分析获得不同内装等价分布方式下的车体侧墙振动的模态参数及模态振型,并建立符合车体侧墙模态参数和振动情况的有限元模型,将实测的空调基座加速度频域值作为激励,对有限元模型进行频率响应分析和瞬态响应分析,通过与试验结果对比验证了该模型的合理性。

In this paper,the modal parameters and modal shapes of the car body side wall vibration under different interior equivalent distribution modes are obtained by modal analysis,and the finite element model that conforms to the modal parameters and vibration conditions of the car body side wall is established.The measured acceleration frequency domain value of the air conditioning base is used as an excitation,and the frequency response analysis and transient response analysis of the finite element model are carried out.The rationality of the model is verified by comparing with the experimental results.