西安理工大学学报2012，Vol.28Issue(2)：221-224,4.
双粗糙表面接触模型中微观摩擦系数的确定
Determination of Microcosmic Friction Coefficient in Contact Model of Double Rough Surfaces
摘要
Abstract
The problem of value determination of microcosmic friction coefficient in contact model of ground surface is studied by means of analysis of influence upon microcosmic friction coefficient on relation between normal deformation and normal load in the contact model of double rough surfaces. Data of surface profile obtained by surface profiler are adopted and then two dimension model based on finite element method is built to calculate relation between normal deformation and normal load in samples of different microcosmic coefficients. Computation results show that microcosmic friction coefficient between two contact surfaces markedly influences contact deformation under low pressure but microcosmic friction coefficient hardly influences contact deformation under high pressure. When microcosmic friction coefficient is not equal to zero, there exists a subsidence range in curve of relation between normal deformation and normal load, and the subsidence range is small when friction coefficient is lower. By comparison with trial result of relation between normal deformation and normal load, computation results ignoring friction coefficient is closest to trial result. Therefore, in contact model of double rough surfaces, microcosmic friction coefficient should be ignored. Moreover, by means of analysis of numerical computation, influence of microcosmic friction coefficient is studied on the highest contact stress and real contact area. Level of contact stress and real contact area are decreased in tendency when microcosmic friction is ignored.关键词
有限元/粗糙/接触/模型/摩擦系数Key words
finite element/ coarse/ contact/ model/ friction coefficient分类
数理科学引用本文复制引用
赵金娟,王世军..双粗糙表面接触模型中微观摩擦系数的确定[J].西安理工大学学报,2012,28(2):221-224,4.基金项目
国家重点基础研究发展计划基金资助项目(2009CB724406) （2009CB724406）
国家科技重大专项基金资助项目(2009ZX04014-032) （2009ZX04014-032）
西安理工大学科技创新计划基金资助项目(102-210916) （102-210916）
陕西省教育厅科学研究计划基金资助项目(08JK393). （08JK393）
