基于元胞自动机法的复合材料密封环微观磨损状态模拟

发布时间：2018-10-10 12:14

【摘要】：基于离散体系的移动元胞自动机方法,并考虑多种填充材料的影响,构建了重型车辆传动系统的复合材料密封环的离散模型,选择聚四氟乙烯和聚醚醚铜两种复合材料,进行密封摩擦副微观摩擦磨损过程的可视化对比仿真。通过仿真直观观察密封表面微观结构的动态演化,及其机械混合层的形成和发展过程。通过磨损元胞的统计计算,分析在模拟时间内两种复合材料密封环的微观磨损情况。同时开展了密封环摩擦磨损试验,通过扫描电子显微镜观察两种密封材料的表面形貌,结果表明,在材料颗粒磨损方面,仿真与试验结果基本一致,验证了通过移动元胞自动机方法开展复合材料密封环微观摩擦磨损模拟的有效性。
[Abstract]:Based on the moving cellular automata method of discrete system and considering the influence of various filling materials, the discrete model of composite sealing ring for heavy vehicle transmission system is constructed. Two kinds of composite materials, PTFE and polyether copper, are selected. Visual contrast simulation of micro friction and wear process of sealing friction pair is carried out. The dynamic evolution of the microstructure of the seal surface and the formation and development of the mechanical mixing layer were observed by simulation. Through the statistical calculation of the wear cells, the micro-wear of two composite sealing rings during the simulated time was analyzed. At the same time, the friction and wear tests of sealing ring were carried out. The surface morphology of the two sealing materials was observed by scanning electron microscope. The results show that the simulation results are in good agreement with the experimental results in the aspect of material particle wear. The validity of micro friction and wear simulation of composite sealing rings by moving cellular automata is verified.
【作者单位】：江苏大学汽车与交通工程学院;中国北方车辆研究所;
【基金】：国家自然科学基金(51005104) 江苏省“六大人才高峰”项目(2014-JXQC-005) 江苏省大学青年骨干教师培养工程和江苏大学科技项目青年扶持基金(FCJJ005)资助
【分类号】：U463.2;U467

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