摘要
根据金属基粉末冶金自润滑材料的微结构特点,建立了自润滑材料的包覆体胞单元模型,并基于所建立的体胞单元模型,对摩擦热-应力耦合场中包覆体胞单元模型的自润滑机理进行了数值模拟研究,分析了摩擦系数、包覆体材料强度及孔隙度等参数对体胞单元包覆核材料驱动作用的影响。结果表明:在其他条件不变的情况下,包覆核材料向包覆体外的排出量随着摩擦系数、包覆体材料的强度、孔隙度的上升而增加。
A new covered model was developed for analyzing self-lubricating mechanism of sweat gland micro-pores at high temperature, In the model, the frictional heat and the thermal stress coupled field were simulated by a numerical method. Research showed that the driving force of the covered lubricating material was produced by the effect of frictional heat-thermal stress, The influence of the friction coefficient change on the diffusion of lubricating elements was also discussed, The inner and outer layers characteristics of the covered model were also investigated in the paper.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2006年第6期20-23,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金(50275110)
关键词
摩擦热
热应力
高温自润滑
包覆体胞
汗腺
frictional heat
thermal stress
high temperature self-lubrication
covered model
sweat gland
