A vehicle body model (200) (13) is acquired, a plurality of divided regions (15) are set on the vehicle body model (200), a vibration noise reduction target plate member model (17) is set, a vibration mode of the vibration noise reduction target plate member model and a peak frequency (19) of equivalent radiation power are selected by vibration analysis of the vehicle body model (200), and a vibration noise reduction target plate member model (17) is selected by vibration analysis of the vehicle body model (200). The weight of the one or more divided regions is changed to acquire a peak frequency of the equivalent radiation power of the vibration noise reduction target plate member model (21), the contribution degree of the weight of each divided region to the acquired peak frequency of the equivalent radiation power is calculated (S23), and the vibration noise reduction target plate member model is calculated on the basis of the contribution degree of the weight of each divided region. A portion (25) that lightens a vehicle body is determined to reduce vibration noise from a panel member of an automobile.
本发明取得车身模型(200)(13),在车身模型(200)上设定多个划分区域(15),设定振动噪音降低对象板部件模型(17),通过车身模型(200)的振动解析选定振动噪音降低对象板部件模型的振动模式和等效辐射功率的峰值频率(19),变更一个或多个划分区域的重量取得振动噪音降低对象板部件模型的等效辐射功率的峰值频率(21),算出各划分区域的重量对取得的等效辐射功率的峰值频率的贡献度(S23),基于各划分区域的重量的贡献度,确定使车身轻量化的部位(25)以降低来自汽车的板部件的振动噪音。
Vibration noise reduction analysis device and analysis method for plate member of automobile
汽车的板部件的振动噪音降低解析装置及解析方法
2023-03-14
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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