【作者】 王周军；

【导师】 刘波；

【作者基本信息】 河北工业大学 ， 机械设计及理论， 2004， 硕士

【摘要】 轻量化是世界汽车工业发展的主要趋势，轻质材料铝及其合金等的使用是一种有效的途径。目前，大部分汽车车轮已使用铝及其合金做作为材料，利用现代设计方法，在此基础上进一步实现车轮的轻量化则是本文的研究所在。 本文从介绍有限元及优化设计的基本思想着手，具体说明了有限元分析软件ANSYS以及CAD软件Pro/ENGINEER的功能及其主要特点。着重介绍了应用ANSYS对铝合金车轮进行结构强度分析、优化的具体过程。 本文使用Pro/ENGINEER软件，按照轮辋的国家标准，建构车轮的实体模型；然后把模型导入ANSYS，按1997年中国汽车行业标准中的汽车轻合金车轮的性能要求和实验方法所规定的疲劳实验要求施加荷载；然后进行强度分析，分析结果表明，车轮的最大应力远小于铝合金的许用应力，存在进一步优化的可能和必要。然后，参数化构建车轮模型，利用ANSYS的优化模块对其进行优化，优化结果表明，车轮的重量有了显著的减少，车轮的最大应力接近材料的许用应力，且分布更合理。 研究结果表明，利用CAE分析技术有助于提高汽车车轮的设计水平、缩短设计周期、减少开发成本。该方法具有普遍性，适用于指导任何其它型号车轮的设计和分析。更多还原

【Abstract】 The world automobile industry develops to lightweighting. One of the effective approachs is the useness of lightweighting material, such as aluminium and its alloy, in automobile. At present, aluminium and its alloy are widely used in wheels. The motive of this paper is to reduce ulteriorly the weight of wheel in virtue of advanced design method.At first, the paper introduces the elementary theory of finite element method and optimum design, and then introduces the chief functions and characteristics of the finite element software, ANSYS, and the CAD software, Pro/ENGINEER, in detail. Furthermore, the processes using ANSYS to carry out intension analysis and optimum design are introduced as a focal point.In this paper, Pro/ENGINEER is used to creat the model of wheel which is according with GB/T3487-1996. Then the model is submitted to ANSYS where it is dealed with and loaded according as the prescribe in the fatigue experiment of GB/T3487-1996 and is analyzed in intension. The result shows the maximal stress is much less than the breaking point of aluminium alloy, which makes material wasted. So, it is necessary and possible to optimize the structure of wheel. To creat the parametric model of wheel, and then to use ANSYS to optimize it. The result shows the weight of the wheel is reduced remarkably and the maximal stress in wheel approaches its breaking point and its distributing is more rational.This study shows CAE helps to improve design level of wheel, shorten design cycle and reduce design cost. It is a prevalent analytical means and is fit to any wheel.更多还原