关键词: 方向盘；加速抖动；模态；结构优化

Abstract: This article mainly focuses on the issue of steering wheel vibration during acceleration of a certain sport utility vehicle (SUV). The article uses fishbone analysis method to investigate and test the assembly process, transmission system, exhaust system, suspension system, steering system, tire dynamic balance, etc, it is finally confirmed that the steering wheel resonance is caused by the coupling of the steering system modes. Using modal and transmission theory for analysis, it is proposed to change the first-order pendulum mode of the steering system to achieve the goal of modal frequency avoidance. Based on the simulation results, an optimized sample is made to verify its effectiveness. The peak vibration of the steering wheel decreased from 0.46g to 0.24g, indicating a significant improvement in subjective perception. This provides a solution and approach for the issue of steering wheel shaking in other vehicle models in the future.

Key words: Steering wheel; Acceleration jitter; Modal; Structural optimization