变载荷下SiC多孔陶瓷的摩擦磨损性能研究

发布时间：2018-03-22 21:08

本文选题：变载荷　切入点：SiC多孔陶瓷　出处：《润滑与密封》2017年03期 　论文类型：期刊论文

【摘要】：在改进后的MMS-2A微机控制摩擦磨损试验机上研究变载荷下SiC多孔陶瓷的摩擦磨损性能,通过变载荷和静载荷试验对比分析变载荷对摩擦因数的影响及变载荷下多孔陶瓷的磨损机制。结果表明,变载荷下随着载荷增大SiC多孔陶瓷摩擦因数减小,SiC多孔陶瓷的磨损机制为脆性断裂和磨粒磨损。建立多孔陶瓷和45#钢的环-块摩擦副几何模型,运用有限元分析软件ANASYS Workbench仿真分析变载荷对接触应力的影响。结果表明,SiC多孔陶瓷的接触应力分布不均匀,并且接触应力呈现环-块接触的垂直轴线区域大、两侧小的状态,其中最大接触应力出现在与块接触区域,环和块的最大接触应力位置错开一定的距离。
[Abstract]:The friction and wear properties of SiC porous ceramics under variable load were studied on an improved MMS-2A microcomputer controlled friction and wear tester. The effect of variable load on friction coefficient and wear mechanism of porous ceramics under variable load were analyzed by contrast analysis of variable load and static load test. The wear mechanism of SiC porous ceramics is brittle fracture and abrasive wear with increasing the friction coefficient of SiC porous ceramics under variable load. The geometrical model of annular friction pairs of porous ceramics and 4steel is established. The finite element analysis software ANASYS Workbench is used to simulate and analyze the influence of variable load on contact stress. The results show that the contact stress distribution of sic porous ceramics is not uniform, and the contact stress shows a large vertical axis region of ring-block contact and small contact stress on both sides. The maximum contact stress occurs in the contact area with the block, and the maximum contact stress position of the ring and the block stagger a certain distance.
【作者单位】：上海工程技术大学机械工程学院;上海交通职业技术学院;
【基金】：2015年上海工程技术大学研究生科研创新项目(E309031601016)
【分类号】：TQ174.15

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