【作者】 战东红；

【导师】 崔胜民；

【作者基本信息】 哈尔滨工业大学 ， 车辆工程， 2011， 硕士

【摘要】 大量非职业驾驶员的出现,消费者对驾驶性能要求的提高以及环境节能减排的需要等使得汽车行业加快了对汽车自动变速器技术的研究。其中双离合器自动变速器作为一种新型自动变速器,较其他变自动速系统有着更加优越的动力性,经济性,成为当今汽车领域研究的热点。若以传统的设计方法开发设计双离合器效率低,因此研究一种基于三维CAD系统的参数化设计方法对提高双离合器的设计效率及缩短开发周期具有重要意义。另外离合器在瞬态结合过程中滑磨产生的热量问题也不容忽视,因此有必要对双离合器关键零部件进行热分析。本文即以设计一款高级乘用车自动变速系统为例,对干式双离合器的参数化设计及热分析展开研究。根据车型参数选择干式膜片弹簧双离合器作为其研究对象完成对干式双离合器的结构设计及离合器的基本参数计算,并对离合器主要性能指标校核。同时对干式双离合器中的关键零部件压盘,膜片弹簧、从动盘总成以及离合器盖进行设计。确定压盘基本参数并校核;分析常开式膜片弹簧的工作特性,确定其基本参数尺寸,并对其进行受力分析;对从动盘总成中的主要零件从动片、减震器盘、摩擦片、从动盘以及扭转减震器进行了设计计算。在干式双离合器结构及零件基本参数确定的基础上,本文重点是选择以CATIA三维建模系统为平台及VB6.0为开发工具,借助CATIA二次开发接口,利用VB6.0外部程序访问CATIA内部对象的方式,实现了对干式双离合器结构中关键零件的参数化设计,并进一步实现了装配参数化设计。在参数化模型的基础上,利用ANSYS有限元分析软件对双离合器换挡过程中摩擦片及压盘Ⅰ滑磨产生的瞬态温度场及因摩擦生热引起的热应力、热应变进行了热分析,同时对膜片弹簧进行静力学分析,这些为双离合器的结构设计及优化分析提供了一定的依据。更多还原

【Abstract】 The massive amateur drivers’appearance, the consumer’s enhancement for handling as well as requirement for environment energy conservation and so on make the auto industry research speed up the automobile automatic transmission technology research. Among them double clutch transmission as a kind of new automatic transmission, more superior power, economic type than other ones, becomes the hot spot that the auto industry studies nowadays. If developing double clutch by traditional design method, efficiency is low, therefore it is necessary to study one kind method based on the parameter design of 3D CAD system which can improve design efficiency of double clutch and shorten research cycle. Moreover, the calorific problem in a sudden cohesive process of clutch cannot be neglected, so it is also essential to do heat analysis on key parts of double clutch. Taking a style of light passenger car for instance, this paper mainly analyzes parameter design and thermal analysis of double clutch.According to the vehicle parameter, this paper chooses dry diaphragm spring double clutch as research object, completes structure design and basic parameter computing of the clutch, and checks calculation of parameter performance. At the same time crucial parts of double clutch are designed. This paper determines and checks parameter of platen, analysis the diaphragm spring’s operation characteristic, recognize its basic parameter size, and does force analysis for spring. The follower pan, shock absorber pan, friction, clutch plate hub, torsion shock absorber as driven disk’s main parts are carried on design computing.Based on basic parameter of double clutch, the point of the paper is to choose CATIA as 3D modeling platform and VB6.0 as development tool, visit the CATIA internal object by VB6.0 exterior procedure with the aid of the CATIA re-development connections, realize crucial parts’parameter design of the double clutch structure, and further realize the assembly parameter design of double clutch.This paper makes transient state temperature field analysis, thermal stress and thermal strain on the friction disk and pressure plate I of double clutch in the sudden cohesive process by ANSYS finite element analysis software. In addition, this paper does static analysis on the disk spring. These works can provide certain basis for double clutch’s structural design and the optimized analysis.更多还原