【摘要】 对赫兹接触理论不能求解的"边缘效应"问题,采用有限元三维接触分析,以FGM制备的单列圆柱滚子轴承滚动体的梯度层参数优化为例,对FGM梯度层的分布和层数等参数进行了优化设计,获得了优化参数对等效应力和接触应力的影响规律。研究结果表明:有限元分析优化能够有效改善边缘效应问题,结构合理的FGM可以有效实现FGM零件的优化目标,提高零件使用性能要求。通过本研究获得的一些优化方法和规律,为FGM零件的优化设计提供了分析数据和经验。更多还原

【Abstract】 In order to solve the problem of ’edge effect’ which could not be solved by the Hertz contact theory,the distribution and layer number of FGM components were optimized and designed using three-dimensional finite element contact analysis with the example of rollers of single row cylindrical roller bearing made of FGM.The effect regularity of optimization parameters on the equivalent stress and contact stress were obtained.Research results indicate that finite element analysis and optimization can improve the problem of ’edge effect’.FGM with the reasonable structure can realize the optimization goal and enhance the performance requirements of components.Optimization method and regularity obtained by this study can provide analysis data and experience for the optimization and design of FGM components.更多还原