【作者】 李亮；

【导师】 宋立权；

【作者基本信息】 重庆大学 ， 机械设计及理论， 2012， 硕士

【摘要】 双离合器双液力变矩器两体式柔性飞轮是一种采用两个挠性体结构的新型飞轮，以解决传统一体式挠性盘飞轮存在的易产生裂纹、变形、破碎等缺陷，且对于降低整车传动的横向（轴向）振动、缓解传动系的冲击等方面都发挥着非常良好效果，其设计的合理性直接影响到汽车的舒适性和零部件工作的可靠性，因此，双离合器双液力变矩器柔性飞轮的特性研究具有重要的意义。论文对双离合器双液力变矩器两体式柔性飞轮的国内外发展现状及发展趋势进行了研究，对两体式柔性飞轮的关键部件进行校核计算，进一步利用有限元分析技术对柔性飞轮的设计问题展开了研究，提出并探讨了基于理论计算和有限元分析的双离合器双液力变矩器柔性飞轮的设计与优化的方法和模式，同时应用此方法和模式对某公司的一款双离合器双液力变矩器两体式柔性飞轮进行了具体的分析、设计和优化，并对结果进行了试验验证，为该类产品的设计提供了可行的设计与分析方法的依据。论文的主要研究内容包括一下几个部分：①对双离合器双液力变矩器柔性飞轮关键部件，如起动齿圈、圆柱直齿渐开线花键、螺栓等进行了理论分析，关键部分的强度都符合设计要求。②为验证双离合器双液力变矩器柔性飞轮的结构设计的合理性，以及探讨柔性盘对整体飞轮的减振作用。应用Pro/Engineer软件建立了双离合器、双液力变矩器柔性飞轮的三维实体模型，在此基础上利用ANSYS Workbench软件对一体式飞轮和两体式飞轮总成分别进行了结构强度应力分析、模态分析和谐响应分析，确定两体式飞轮总成的优势。③挠性板是飞轮总成中的重要部件，其轴向刚度直接影响飞轮的轴向减振特性，在满足刚度和强度的条件下，应使挠性板具有一定的轴向柔性而总成的轴向振幅较小，通过改变挠性板的外部型线，利用ANSYS Workbench软件对曲线进行分析，获得具有“理想特性”的结构型线，实现所要求的动力学特性，并经试验验证其分析方法的正确性和产品结构的合理性。④针对新型设计开发windows环境下的双离合器双液力变矩器两体式柔性飞轮计算机辅助设计软件系统，所开发双离合器双液力变矩器两体式柔性飞轮的软件系统已被企业所验收，并应用于生产设计。论文所优化后的双离合器双液力变矩器两体式柔性飞轮，结构新颖，是一种既满足强度条件又满足动力学特性的结构形式，相对于传动一体式飞轮与优化前的两体式飞轮，新型的双离合器双液力变矩器两体式柔性飞轮具有更好的减振效果。更多还原

【Abstract】 Dual-clutch transmission and double-turbine torque converter’s flexible flywheel isthe newly developed type which has applied the design of a two-body flexplate in orderto solve the traditional one-piece flexible flywheel is flawed by easy generation crack,deformation, broken and so on, and it has a very good effect on reducing thetransmission of the transverse vibration and alleviating the impact of the transmission.The rationality of the design directly affects the vehicle comfort and the reliability of theworking parts. Therefore, researching on characteristic of dual-clutch transmission anddouble-turbine torque converter’s two-body flexible flywheel has the vital significance.The current development status and development trend of the dual-clutchtransmission and double-turbine torque converter’s flexible flywheel are systematicallyresearched, and the key parts of intensity examination computation in the two-bodyflywheel have been completed. Through researching the issue of the flexplate’s designby the further use of the FEM (Finite Element Method) analysis technology, proposesand discusses the design and optimization method and mode of dual-clutch transmissionand double-turbine torque converter’s flexible flywheel based on theoretical calculationand FEA(Finite Element Analysis), and the method and mode is used in the concreteanalyze, design and optimization of the he dual-clutch transmission and double-turbinetorque converter’s two-body flexible flywheel. The calculation is verified byexperiments which provides the basis of feasible design and analysis method for thedesign of this kind of products. The main research as follows:①The paper also theoretically analyzes he key parts of dual-clutch transmissionand double-turbine torque converter’s flexible flywheel, such as starter gear rim,involute cylindrical spline, bolt and so on.②Corresponding3D modeling of the dual-clutch transmission and double-turbinetorque converter’s flexible flywheel has been constructed by virtue of the softwarePro/Engineer, and further comparative analysis between one-body flywheel andtwo-body flywheel has been studied in terms of structural stress, modal, and harmonicby the finite element software ANSYS Workbench, so that it can validates therationality of the design of the structure of dual-clutch transmission and double-turbinetorque converter’s flexible flywheel, and identifies the two-body flywheel’s advantages.③The flexplate is an important part of the flywheel assembly, its axial stiffness directly influence the axial vibration reduction characteristics. Under the condition ofsatisfying intensity and rigidity, the flexplate should make a certain axial flexibility,while the axial amplitude of assembly should be smaller. Through the change ofexternal flexplate’s type line, and get an "ideal characteristics" structural line after usingANSYS Workbench software to analyze the curves in order to achieve the dynamicrequirements. Experimental result verifies the accuracy of analysis method and therationality of product structure.④A CAD(Computer Aided Design) software system for the design and analysis ofthe flywheel new constrain line under the windows environment is developed anddesigned, and the CAD software system has been applied in the company.In this paper, the optimized flywheel dual-clutch transmission and double-turbinetorque converter’s flexible flywheel, has novel structure, which is structural style notonly satisfies the condition of strength but also meet the the dynamic characteristics ofthe structure. Relative to the transmission one-body flywheel and unoptimized two-bodyflywheel, the new type of dual-clutch transmission and double-turbine torqueconverter’s flexible flywheel has better vibration suppression.更多还原