...Shijun Wang; Lingsong Fan; Jingwei Wu; Pengyang Li A side contact model of joint is proposed, which considers the horizontal distance distribution and side contact between the asperities on the contact surfaces. The Leica DCM3D microscope is applied to collect the profile data of the grinding...

... conductivities and elastic moduli. In order to obtain the actual shape of the surface asperity, the surface shapes of contact bodies are evaluated separately. It is clarified that the asymmetric deformation of the asperities appears due to two causes. One depends on the slide-roll ratio (SRR) and the difference...

...Yuqin Wen; Jinyuan Tang; Wei Zhou; Lin Li The 3D rough surface modeling and contact analysis is a difficult problem in the study of rough surface contact. In this paper, a new method for reconstruction and contact analysis of asperities on 3D rough surfaces is proposed based on real rough surfaces...

...Shaofei Shang; Xiaoshan Cao; Zhiqiang Liu; Junping Shi In this study, the normal stiffness of elastic contact between rough surfaces with asperities following Gaussian distribution is investigated using ubiquitiform theory, developed from fractal theory. In the generalized ubiquitiformal Sierpinski...

...W. Cheng; K. Farhang Approximate closed-form equations are derived for normal contact force between nominally flat rough surfaces in dry contact. The formulation is based on the asperity-level interaction in which adhesive forces between two asperities and elastic and rate-dependent forces...

...Ali Sepehri; Kambiz Farhang Approximate closed-form equations governing the shoulder-shoulder contact of asperities are derived based on a generalization by Chang, Etsion, and Bogy. The work entails the consideration of asperity shoulder-shoulder contact in which the volume conservation is assumed...

... misalignment, and thereby contact moment is derived. Through this scheme it is possible to also define elastic contribution to friction, since the half-plane tangential contact force on one side of an asperity is no longer balanced by the half-plane tangential force component on the opposite side. The elastic...

...Andreas Goedecke; Randolf Mock A set of finite element simulations was performed to analyze the creep behavior of an elastic–perfectly plastic hemisphere in contact with a rigid flat. This study focuses on the time-dependent stress relaxation of a fully plastic asperity. Assuming a Garofalo...

...A. Sepehri; K. Farhang A hybrid interactive/optimization technique is used to derive in approximate closed-form equations relating contact load to mean plane separation. Equations governing Hertz contact for the interaction of surface asperities are considered in which asperity shoulder-to-shoulder...

...J. Jamari; M. B. de Rooij; D. J. Schipper In this paper, a theoretical and experimental investigation is presented to study the contact behavior of the plastic contact of deterministic rough surfaces. Analyses exclude bulk deformation of the rough surface and concentrate to the contact on asperity...

...A. Hariri; J. W. Zu; R. Ben Mrad The asperities of rough surfaces have long been considered to be points higher than their immediate neighbors. Based on this concept, theories were developed for quantitatively understanding the elastic and plastic nature of contact between rough surfaces. Recently...

...Reese E. Jones; David A. Zeigler The Greenwood and Williamson (1966) model is an elegant and often-cited paradigm for predicting the load-displacement behavior of contacting rough surfaces given the height distribution of the contacting asperities. By use of an inverse technique and available load...

... of surface topography during rolling, as long as this is combined with a clear understanding of the relevant regimes of lubrication. It is essential that more complete theoretical models of the lubrication process are developed to understand the influence of the pit geometry on asperity crushing and to model...