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为弥补以往根据经验设计减速带的不足,建立了汽车通过减速带时的振动模型,利用状态空间法对系统的动力学响应进行求解;编制MATLAB程序对系统的加速度响应进行了数值计算,并分析了车速和减速带截面尺寸与最大振动加速度的关系。研究表明,汽车通过减速带时的振动加速度与减速带高度成线性正比关系;随着车速与减速带长度之比的增大,最大振动加速度具有先增大后减小的趋势。
In order to make up for the shortcoming of designing deceleration zone based on experience, the vibration model of the vehicle passing through the deceleration zone was established and the dynamic response of the system was solved by the state space method. The MATLAB program was used to calculate and analyze the acceleration response of the system The relationship between the speed and deceleration zone section size and the maximum vibration acceleration. The results show that the vibration acceleration of the vehicle passing through the deceleration zone is linearly proportional to the height of the deceleration zone. As the ratio of the vehicle speed to the deceleration zone increases, the maximum vibration acceleration first increases and then decreases.