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基于机车轮对的弹性复合圆柱滚子轴承深穴结构优化设计 被引量:1
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作者 杨文 《计算机与数字工程》 2020年第4期960-966,共7页
边缘应力集中是机车轮对轴承疲劳失效主要形式之一。弹性复合圆柱滚子轴承是一种改善应力集中和综合性能的新型轴承。考虑机车轮对结构的力学性能,结合弹性复合圆柱滚子轴承的结构特性,通过理论分析确定其受载情况。为了研究应用于机车... 边缘应力集中是机车轮对轴承疲劳失效主要形式之一。弹性复合圆柱滚子轴承是一种改善应力集中和综合性能的新型轴承。考虑机车轮对结构的力学性能,结合弹性复合圆柱滚子轴承的结构特性,通过理论分析确定其受载情况。为了研究应用于机车轮对的复杂载荷条件下弹性复合圆柱滚子轴承的边缘应力集中情况,将深穴结构参数化,提出深穴角度α和深穴半径c两个参数,通过有限元方法对其应力变化规律进行分析,最后通过遗传优化算法对弹性复合圆柱滚动体结构参数进行优化,得出最优结构尺寸α=58.14°,c=0.488Dmm,应用于机车轮对的弹性复合圆柱滚子轴承可以有效降低或避免"边缘效应"。分析过程和方法可为弹性复合圆柱滚子轴承的应用和设计提供有益参考。 展开更多
关键词 弹性复合圆柱滚动体 应力集中 有限元 接触应力
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Bending stress of rolling element in elastic composite cylindrical roller bearing 被引量:11
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作者 姚齐水 杨文 +1 位作者 于德介 余江鸿 《Journal of Central South University》 SCIE EI CAS 2013年第12期3437-3444,共8页
A new structure design method of elastic composite cylindrical roller bearing is proposed, in which PTFE is embedded into a hollow cylindrical rolling element, according to the principle of creative combinations and t... A new structure design method of elastic composite cylindrical roller bearing is proposed, in which PTFE is embedded into a hollow cylindrical rolling element, according to the principle of creative combinations and through innovation research on cylindrical roller bearing structure. In order to systematically investigate the inner wall bending stress of the rolling element in elastic composite cylindrical roller bearing, finite element analysis on different elastic composite cylindrical rolling elements was conducted. The results show that, the bending stress of the elastic composite cylindrical rolling increases along with the increase of hollowness with the same filling material. The bending stress of the elastic composite cylindrical rolling element decreases along with the increase of the elasticity modulus of the material under the same physical dimension. Under the same load, on hollow cylindrical rolling element, the maximum bending tensile stress values of the elastic composite cylindrical rolling element after material filling at 0° and 180° are 8.2% and 9.5%, respectively, lower than those of the deep cavity hollow cylindrical rolling element. In addition, the maximum bending-compressive stress value at 90° is decreased by 6.1%. 展开更多
关键词 elastic composite cylindrical roller bearing hollowness (degree of filling) finite element analysis bending stress rolling element
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