【作者】 龚杰；

【导师】 何耀华；

【作者基本信息】 武汉理工大学 ， 车辆工程， 2012， 硕士

【摘要】 变速器是车辆动力传动系统的重要组成部分,其运动学和动力学的特性以及本身的结构关系到了整个车辆性能的优化匹配,对车辆的性能有着决定性的影响。随着工业技术水平不断提高,人们越来越重视低成本、高效率的设计方法,CAD技术以及虚拟样机技术的发展极大的提高了工业设计的效率、并有效降低了成本。同时作为CAD技术一部分的参数化设计方法,它的实现更加进一步的降低了设计人员的工作量与工作强度,在减少了设计人员在设计、计算和绘图上的重复工作,在此基础上有效的提高了产品的开发效率；在另一个方面虚拟样机作为一种便利的工业产品开发工具的出现,能够帮助设计者在物理样机没有完成前就可以进行虚拟的仿真试验,对整车和各个总成的参数进行优化选择、合理的匹配,同时在此过程中可以对车辆整体或者各个总成的性能进行初步的预测,在之后的总体方案以及各个总成的设计参数得到确认后,同样也能够在段时间内重构虚拟模型进行仿真分析,快速的对相应的数据对应车辆和各个总成的性能做出预测,使设计人员可以在早期发现不合理的设计参数和设计缺陷,及时的进行调整和修改。这项技术的出现同样在很大程度上缩减了车辆的开发周期和提高了设计人员的效率,在降低开发成本的同时有效的提高了产品的性能。本文基于参数化设计和虚拟样机技术,通过对理论知识的查询,根据设定的参数完成车辆的变速器零件的设计,将计算过程通过Visual C#语言进行相应的程序化处理,通过CATIA的对应模块对变速器进行模型的建立与装配,对相应的零件位置关系进行约束。完成上述工作后,再通过Visual C#语言编写交互式界面,将运算程序所得到的参数写入CATIA的参数表中的对应数据,以达到模型的重构。在整个设计过程中,设计人员只需要提供相关的整车数据,程序就能实现变速器零件快速重构,通过接口程序将变速器的主模型导入到虚拟样机软件ADAMS中,通过该软件对变速器的模型进行动力学以及运动学的仿真,研究设计上的合理与有效性。更多还原

【Abstract】 Along with the industry continuously improve the technical level, high efficiency, low cost design gradually attention, CAD technology, virtual prototype technology to accelerate the development of the industrial design of high efficiency low cost increase, the trend of the times. Parametric design is an important part of CAD technology, parametric design idea, radically reducing the design staff and working intensity, reduce the number of design personnel in the design, calculation, drawing on the duplication of work, improve the efficiency of product development; the same virtual prototype as a product development approach, can help the designer in the physical prototype was completed before the production can be carried out a simulation test, help designers to quickly identify and correct product design flaws, can also shorten the development cycle, reduce development cost at the same time, improve product performance.Based on the parametric design and virtual prototype technology, and based on the theoretical knowledge of the query, based on the known parameters of automotive transmission parts of the design, and the calculation process through the Visual C#language procedures for processing, and through the CATIA module for transmission assembly, part of the position relation of related constraint by using the Visual C#language interactive interface, the operation program into CATIA parameters the data in the table are modified, which only need according to the correlation of the parameters of the entire vehicle, can realize the transmission parts rapid reconstruction; and the generated transmission model into ADAMS, on the model of the dynamics and kinematics simulation, research design of rationality and validity.更多还原