商用车驾驶室悬置隔振系统设计开发

Design and Development of Vibration Isolation System of Commercial Vehicle's Cab Suspension

介绍了几种驾驶室悬置的功能特征及其设计流程。建立了某重型商用车驾驶室悬置多刚体ADAMS模型和驾驶室悬置刚弹耦合模型,并将两模型计算结果与道路试验结果进行了时域对比分析。结果表明,两模型时域加速度信号与试验结果十分相近;频率小于20Hz时刚弹耦合系统动力学仿真模型的计算结果与试验结果最接近,但频率大于20Hz后弹性体模型的精度接近于多刚体模型,从而验证了经验悬置参数计算方法的正确性。采用虚拟DOE正交试验技术对驾驶室悬置进行了系统参数优化。

The functions characteristics and design flow of several cab suspensions were introduced in this paper. The multi-rigid-body ADAMS model and rigid-elastic coupling model for a heavy-duty commercial vehicle＇s cab suspension were established,the calculation and road test results were compared and analyzed.The results show that the time domain acceleration signal of the two models is approximately consistent with the test result,when the frequency is less than 20 Hz,the calculation results of rigid-elastic coupling simulation model are most close to the test results;when the frequency is more than 20 Hz,the precision of the elastic body model closes to multi-rigid-body model,thus the validity of empirical suspension parameter calculation method was verified.Finally,the system parameters optimization of cab suspension was carried out by using virtual DOE orthogonal test technique.