A Study on Pitting Resistance of Gear Tooth with Laser Surface Treatment
Jixie chuandong, 1994 本文用常用的辊子模拟方法，对４０Ｃｒ钢调质试件进行激光表面相变硬化．然后与４０Ｃｒ钢调质处理试件一起进行接触强度对比试验。结果表明，激光相变硬化能显著地提高齿轮等滚滑接触表面的疲劳寿命，本文还分析了激光表面相变硬化提高齿轮接触强度的机理。
黄华樑, 玉如峰
doaj
Jianzhu Gangjiegou Jinzhan轮载下正交异性钢桥面板的局部效应显著，相邻各疲劳易损细节的疲劳行为相互影响，特别是随着某个细节裂纹扩展，相邻细节疲劳应力可能增大，桥面板疲劳性能呈加速劣化趋势。疲劳应力响应及桥面板性能劣化评估已成为钢桥面板运营期面临的挑战和亟待进行的工作。为合理评估开裂正交异性钢桥面板的疲劳性能演化情况，基于既有足尺模型疲劳试验，综合采用有限元程序ANSYS和Franc3D的多尺度交互技术模拟钢桥面板典型疲劳易损细节裂纹扩展行为，探究裂纹扩展过程中各关键细节（顶板与U肋连接焊缝、U肋与横隔板连接焊缝、横隔板开孔处 ...
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Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2023 Li M, Zeng J, Liang B.
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Zhendong Ceshi yu Zhenduan针对地铁列车在运营期间排障器支架断裂问题，以断裂支架为研究对象，通过断口分析、强度仿真计算、动应力试验以及振动特性分析等多种研究手段，揭示支架断裂的复合原因。结果表明：长期高频交变载荷作用诱发支架结构疲劳故障，表面加工方式不当引起其疲劳寿命降低；现有轮轨条件下，排障器摆动量较大，存在动应力过大的问题；全线道床结构类型与排障器支架横向弯曲模态频率接近，导致的共振现象使振动能量变大，长期运营造成振动疲劳断裂；为避免排障器支架断裂的发生，建议在设计阶段采用更具有抗振、耐疲劳性能的材料，提高排障器的摆动稳定性 ...
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Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLi S, Fu Y, Zhang Y, Lu G.
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Sheng Wu Yi Xue Gong Cheng Xue Za ZhiWang W, Zhao Y, Yu W, Ren H.
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