摘要
基于有限元方法建立带有第三体颗粒接触作用的球-平面三维仿真模型,研究在部分滑移状态下第三体对微动磨损的影响。分析了线弹性和弹塑性材料本构下第三体颗粒与第一体之间接触行为,确定研究对象材料本构;分析了不同尺寸条件下的第三体颗粒接触行为;研究了不同加载条件下第三体颗粒对微动磨损的影响。结果表明:弹塑性材料更能体现第三体的接触特性,第三体颗粒受到较大的接触压力发生塑性变形,减小了接触面之间的接触压力;直径0.8μm的第三体颗粒所承受接触压力最大,0.2μm时接触压力最小,且随着直径增大塑性变形增大;部分滑移状态下,在微动初始阶段第三体颗粒的存在会降低磨损,较小的接触宽度或较大的位移幅值会导致第三体颗粒承受的接触压力减小,摩擦耗散能增大,微动磨损加剧。
Based on the finite element method,a ball-plane three-dimensional simulation model with the contact of the third body particles was established.The influence of the third body on fretting wear under partial slip condition was mainly studied.The contact behavior between the third body and the joint surface under the action of linear elastic material and elastic-plastic material was analyzed.The influences of different sizes on the contact behavior of the third body particles were studied.The effect of third body particles on fretting wear under different loading conditions was studied.The results showed that the elastic-plastic material can better reflect the contact characteristics of the third body.The third body particles were plastically deformed by the larger contact pressure,which reduced the contact pressure between the contact surfaces.The contact pressure of the third body particles with a diameter of 0.8μm was the largest,and the contact pressure was the smallest at 0.2μm,and the plastic deformation increased with the increase of diameter.In the initial stage of fretting,the existence of the third body particles could reduce the wear.For partial slip fretting wear,a smaller contact width or a larger displacement amplitude could lead to a decrease in the contact pressure of the third body particles,and an increase in friction dissipation energy and wear.
作者
李玲
薛颖超
妙东浩
阮晓光
李丽霞
解妙霞
LI Ling;XUE Yingchao;MIAO Donghao;RUAN Xiaoguang;LI Lixia;XIE Miaoxia(School of Mechanical and Electrical Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)
出处
《航空动力学报》
北大核心
2025年第3期274-284,共11页
Journal of Aerospace Power
基金
国家自然科学基金(51975449)
陕西省重点研发计划(2021GY-309)。
关键词
第三体颗粒
微动磨损
部分滑移
接触宽度
位移幅值
third body particles
fretting wear
partial slip
contact width
displacement amplitude
