【作者】 唐明祥；

【导师】 史文库；

【作者基本信息】 吉林大学 ， 车辆工程， 2010， 硕士

【摘要】 论文采用虚拟样机技术围绕双质量飞轮(DMF)扭转减振器设计开发开展研究,完成了双质量飞轮(DMF)式扭转减振器减振开发流程:产品概念设计→产品建模与仿真→产品性能设计→产品结构参数设计→产品工艺设计→样件试制→样件测试→实车测试。针对两级弹性DMF进行了理论研究,建立了DMF的数学模型,建立了振动微分方程。以某款国产高级轿车的动力传动系统为研究对象,设计了一款两级弹性双质量飞轮式扭振减振器,并建立了三维数学模型。利用虚拟样机技术及优化设计理论以第二飞轮上的角速度变化量与扭矩变化量最小为目标函数进行优化,对该DMF式扭转减振器的转动惯量、扭转刚度及阻尼进行优化设计,利用得到的仿真数据对DMF的三维数学模型进行修正,确定了二维工作图,在此基础上完成DMF的设计。完成了DMF的装配工艺和制造工艺分析,并对关键的工艺过程进行说明,依据设计图纸加工了DMF的手工样件,通过台架实验测试了样件的性能,测试结果与设计性能吻合较好,从而验证了设计方法的正确性。更多还原

【Abstract】 With the improvement of living standards and scientific & technological advances, people demand more and more vehicle ride comfort, while the car’s lightweight and high torque increased to some extent the vehicle vibration and noise, which seriously affecting traffic ride comfort. As the main vibration sourc, the vibration of the powertrain torsional concern more and more by the industry. Dual mass flywheel (DMF) is a new torsional vibration control technology rised in 80’s of last century. The technology has matured in foreign countries, and scientific research institutes and manufacturers in China have started to pay attention to this new technology recent years. In order to achieve the localization of DMF, reducing manufacturing costs and improve vibration and noise of domestic vehicles, the main task, currently, is the localization of the DMF and the exploring of methods and theory of DMF design.In this paper, by drawing the references and combining with our many years of research and experience, we established a mathematical model of two DOF and derived the vibration equation and analyzed its dynamic characteristics. The structural design of DMF was performed according to the parameters of certain of domestic model. The structural parameters were determined, the elasticity units of the shock absorber were designed, the 3D model of the DMF was established according with the structural parameters, the simulation analysis of the attenuation of the torsional vibration of the DMF was performed, the simulation analysis the effect of the mass ratio, stiffness and damping on the performance of the DMF was conducted, the design was optimized according to its structural parameters. Through these experiments, we obtained a series of optimal theoretical value and modified the structural parameters according to these theoretical values. Ultimately, the structure, the size and the 2D design graph of the DMF were determined.We analyzed the assembly process and the manufacturing process of the DMF on basis of its structural design. Also, we described some key technology. The work has the meaning of guidance and reference on the localization of DMF.In accordance with the design drawings, the manual samples were prepared and the unilateral and bilateral torsion examinations were conducted by bench test. The results showed that the payoff agreed well with the design performance requirements, which proved correct and peasible of the design method applicated in the research. However, the vehicle test conditions are not met and can not be implemented, which should be further improved in the future studies.更多还原