脉冲输入下的簧下质量对车辆平顺性的影响研究

摘要

为了研究脉冲输入下的簧下质量对电动汽车平顺性的影响,在Carmaker软件中建立了车辆的整车模型和脉冲路面的虚拟试验场,并进行了整车平顺性仿真,设计试验进行验证.研究结果表明,随着前轮质量的增加,前轮与车辆质心处的最大加速度逐渐减小,但当前轮质量增加超过30kg后,车身质心处的主振动频率会落在人体的敏感频率范围内,使人体产生不适感,即降低了车辆行驶平顺性.%According to the four degrees of freedom kinematics theory and nationalstandard,it establishes the vehicle model and the pulse virtual proving ground pavement road in Carmaker,analyzes the vehicle comfort and the influence of spring mass to vehicle smoothness under pulse input.The results show that with the increase of the quality of each wheel,the maximum acceleration of front wheel and the body center decrease gradually,and the maximum acceleration of the body center does not affect people's health,but the main vibration frequency of center of the body falls within the scope of the human body sensitive frequency if the additional mass reaches 30kg,which makes human body uncomfortable.