关键词: 振动与波, 座椅, 悬架, 模态分析, CAE分析, 共振

Abstract:

The problem of vibration occurred at front seat without passenger for a certain SUV during acceleration, and it badly affected the quality of the whole vehicle. The resonance phenomenon was studied by interior vibration test, modal test and CAE analysis, the resonance was caused by the swing modal frequency of front seat with suspension frequency of the vehicle. Finally, it was proposed to optimize the structure of front seat to change the natural frequency and increase vibration absorbers away from the suspension vibration frequency to avoid resonating, the test result showed that the amplitude was extremely reduced by 2.5m/s2 and subjective appraised that the vibration was eliminated. Considering cost、period synthetically, the project of strengthening for front seat frame was choosed.