基于ADAMS车辆橡胶式扭转减振器特性分析

Characteristics Analysis of Rubber Torsional Damper for Vehicle Based on ADAMS

运用传统的双扭摆模型进行数学建模,应用单目标设计的解析法,设计了具有适合参数的橡胶式减振器,确定了转动惯量、阻尼和扭转刚度。运用MATLAB数学计算、绘图函数和ADAMS动力学仿真软件分别对减振前后的传动轴在发动机各种工况下的扭振特性进行比较和分析。首先编制程序绘制发动机典型工况下加装减振前后的传动轴的扭振响应对比图;其次采用ADAMS虚拟样机仿真的方法对安装有减振器的传动系统进行实体建模和仿真。计算结果表明,对于所研究的系统而言,橡胶式扭振减振器传动轴的扭振振幅在许用范围内波动均匀,保证传动轴的可靠安全运行。并且在发动机临界转速和最大功率时,减振器将传动轴的扭振角位移控制在了许用振幅以下,橡胶式扭振减振器能够达到更好的减振效果。

Through the double pendulum to model, using the minimum of the vibration amplitude of the shaft as the object function, the optimum parameters of rubber torsional damper was designed determining moment of inertia, damping and torsion stiffness. The torsional vibration characteristics of the drive shaft of the engine under various operating conditions are compared and analyzed by using the MATLAB mathematical calculation, drawing.function and ADAMS dynamics simulation software. Firstly, the torsional vibration response of the drive shaft is installed before and after the typical operating conditions of the engine, and then the ADAMS virtual prototype simulation is used to simulate the transmission system The results show that the torsional vibration amplitude of the transmission shaft of the rubber torsional damper is uniform in the allowable range, and the reliable operation of the transmission shaft is ensured. When the critical speed and the maximum power of the engine, the vibration damper is controlled by the torsional vibration of the drive shaft and the vibration amplitude of the vibration damper can achieve better results.