以下为句子列表：
英文: Beased on the theory of Hertz stress, the contact stress of roller bearing is analysed in this paper.
中文: 摘要依据赫兹接触强度计算理论，着重研究了圆柱滚子轴承内、外圈及滚动体的接触应力。
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英文: Compared with the traditional cantilever structure, the bearing life of two-terminal bracing structure is improved by 17.51 times, while the contact stress of gear tooth is reduced by 45.7%, and the bending stress of gear tooth is reduced by 62.8%.
中文: 与传统主动齿轮悬臂结构相比两端支撑结构的轴承寿命提高了17.51倍、轮齿接触应力降低45.7%、轮齿齿根弯曲应力减小62.8%。
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英文: For the sake of realizing the structural lightweighting design on ball cage patterned constant speed universal joint, taking the maximum contact stress of ball cage patterned constant speed universal joint, overall contacting deformation and plastic defor
中文: 摘要为了实现球笼式等速万向节的结构轻量化设计，以球笼式等速万向节最大接触应力、接触总变形和塑性变形为依据，分别对钢球数量为6和8的两种结构的球笼式等速万向节进行了初步研究。
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英文: However, the increasing trends of wear depth varies at different fretting wear conditions due to the simultaneous variations of contact area and contact stress in the process of fretting wear.
中文: 建立的钢丝接触有限元模型表明，接触区中心的最大接触应力随着接触载荷的增加而增大，随着嵌入深度的加深而减小。
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英文: Static and dynamic contact calculation model for double arced gear was established based on finite element soft ware ANSYS, and a number of items that ought to be paid attention to on the calculation of contact stress and strain of gear under real operati
中文: 摘要基于有限元软件ANSYS建立了双圆弧齿轮静态和动态接触的计算模型，讨论了在真实转动情况下计算齿轮接触应力、应变应该注意的一些事项。
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