双质量飞轮--四连杆-弹簧机构型扭振减振器弹性特性分析与优化设计

The Elastic Characteristic Analysis and Optimization Design of the DMF-QS

推导出了一种新型双质量飞轮式扭振减振器——四连杆-弹簧机构型扭振减振器的静态弹性特性和扭转刚度表达式,并对影响弹性特性的因素进行了分析。根据国内某款轿车的动力传动系统参数建立了典型工况下的多自由度扭振模型,对该传动系统进行了模态分析,并利用虚拟样机技术对设计参数进行了优化。通过对五挡下采用双质量飞轮式扭振减振器和传统离合器从动盘式扭振减振器的两套整车动力传动系统在关键位置的角速度输出进行比较得知,前者比后者隔振效率提高近40%。

In this paper,the formula of the static elastic characteristic and torsional stiffness on a new type of DMF with Quadrangle-Spring （DMF-QS）was built and the factors affecting elastic characteristic were analyzed.Based on the parameters of one domestic car driveline,a model with multi-freedom-degree in typical load condition is establised,and modal analysis for the driveline was made,the design parameters were analyzed by applying virtual prototype technology. Through the comparison of angular velocity at critical positions between the drivelines with DMF trosional damper and the one with traditional driven plate type clutch torsional damper in 5th speed,it was found the former＇s vibration isolation efficiency is 40 % better than that of the latter.