关键词: 汽车底盘异响；螺纹连接失效；方案验证

Abstract: Aiming at the problem of abnormal noise of automobile chassis, starting from the principle of bolt connection, through the method of combining theoretical calculation and experiment, the factors of bolt torque attenuation are analyzed, the relevant variables are adjusted and tested, and the corresponding results are found through experiments and real vehicle simulations solution. The stability, safety and comfort of the car's operation are improved. The adopted research method provides some ideas and experience for the suspension structure design, and is suitable for the investigation and treatment of abnormal noise of the automobile when it is affected by a variety of factors.

Key words: Abnormal noise of automobile chassis; Threaded connection failure; Program verification