【作者】 王亮；

【导师】 何天明；

【作者基本信息】 武汉理工大学 ， 车辆工程， 2014， 硕士

【摘要】 制动器是保证汽车行驶安全性的重要组成部件，它对于保护人们生命安全的重要性不言而喻。因此，制动器设计和性能的研究在汽车设计领域从未停止过。在本文中详细阐述了本课题的研究背景，详细说明了课题研究的目的和研究的意义，并且分析了目前国内外有关制动器的发展现状和研究情况。根据当前制动器的研究情况，总体确定了本文的研究方案和步骤。目前的工程设计领域中低成本、高效率成为设计领域的主流，而CAD技术和虚拟样机技术的出现很好的解决了这一问题。CAD参数化设计思路的提出更是大大减少了设计人员的工作，使设计者减少了在设计、计算、绘图上所作的重复性工作，提高了产品开发的效率。本文基于参数化建模的方法，根据制动器设计参数，通过CATIA软件的相应模块完成盘式制动器各零件的参数化建模。然后应用Visual Basic语言对CATIA进行二次开发，编写交互式界面并驱动CATIA完成文件的打开、更新和保存。这个过程只需要设计者从新输入设计参数即可。另外，介绍了气压盘式制动器的工作原理。然后，根据传热学理论、传热学分析有限元法等理论建立了盘式制动器温度场和热应力的有限元简化模型。应用ABAQUS强大的有限元分析功能对盘式制动器制动盘摩擦面进行了温度场和热应力的研究，得到了制动盘的热应力云图以及制动盘摩擦面表面的温度分布结果，验证了盘式制动器的结构是否合理、是否符合要求，对其改进设计提供了强有力的参考数据。研究了盘式制动器各个主要零部件的机械应力，包括制动器钳体、钳体支架、摩擦片推板等。通过分析其实际受力情况，在ABAQUS中施加合适的载荷以及边界条件。尽可能保证分析结果的有效性，为制动器零部件的设计改进提供参考。更多还原

【Abstract】 As an important element contributing to safety of driving, the importance of thebrake to safeguard people’s lives is obviously self-evident. Therefore, unceasingresearches have been devoted to designation and quality of automobiles in this regard.In this thesis, backgrounds of the study have been carefully provided, purposes andmeanings of the study have been clearly illustrated and conditions of development andresearch related to brake also have been discussed. Research plan and steps of thestudy are generally designed based on present researches with regards to brake.Nowadays, seeking quality with low cost and high efficiency has become themainstream in the field of engineering design. Related problems can be well solved byCAD techniques and virtual prototyping technology. With CAD parametric designing,designers can avoid repeating works on designing, calculating and drawing, which cansave a lot of time and improve efficiency of product development. Based onparameterization modeling method, modules of CATIA software are used toaccomplish the parameterization modeling of all parts of disc brake according tobrake designing parameters. Moreover, Visual Basic Language is used to carry out thesecondary development of CATIA, write the interactive interface and drive theopening, updating and saving of those accomplished files. This process only involvesthe re-input of designing parameters by designers.Operation principles of air disc brake are also introduced in this thesis. What’smore, according to heat transfer theory and the finite element method in heat transferanalysis, the finite element model simplification of disc brake temperature field andthermal stress has been successfully established. The temperature field and thermalstress of brake disc friction surfaces of disc brake are carefully studied and analyzedthrough the powerful ABAQUS, and the thermal stress nephogram of brake disc andthe distribution of temperature at the friction surfaces also are finally revealed. Theseresults contribute to judgment of reasonability and standard of the structure of discbrake, which could provide reliable and convictive reference data for designimprovement.This thesis also studied the mechanical stress of disc brake’s main components,including brake caliper, caliper holder and friction plate pushing plate. By analysis oftheir actual stress, proper loads and boundary conditions are further applied inABAQUS. The efficiency of results is highly ensured for providing reference todesigning improvement of brake’s components.更多还原