The Subsurface Stress Field Created by Three-Dimensionally Rough Bodies in Contact with Traction

A numerical simulation technique for calculating the complete subsurface stress field for three-dimensionally rough bodies in sliding contact is described. The stresses are calculated using real digitized three-dimensional surface profiles. The effects of the surface roughness and the sliding friction are presented. Using an existing contact simulation code, the digitized surfaces are mathematically pressed together and the real areas of contact and the asperity pressures are calculated. The surfaces are assumed to remain elastic throughout the contact simulation process. The shear forces at the asperity contact interfaces are assumed to be proportional to their calculated normal pressures. The subsurface stresses are then determined with these known normal and tangential forces at the surface. Presented at the 48th Annual Meeting in Calgary, Alberta, Canada May 17–20, 1993

[1]  Herbert S. Cheng,et al.  On the relation of load to average gap in the contact between surfaces with longitudinal roughness , 1992 .

[2]  Herbert S. Cheng,et al.  Computer Simulation of Elastic Rough Contacts , 1985 .

[3]  J. Greenwood,et al.  Contact of nominally flat surfaces , 1966, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[4]  J. Archard.  Elastic deformation and the laws of friction , 1957, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[5]  K. Johnson.  Contact Mechanics: Frontmatter , 1985 .

[6]  L. E. Goodman,et al.  The Stress Field Created by a Circular Sliding Contact , 1966 .

[7]  J. Archard,et al.  The contact of surfaces having a random structure , 1973 .

[8]  P. Nayak,et al.  Random Process Model of Rough Surfaces , 1971 .

[9]  Herbert S. Cheng,et al.  Micropitting in Rolling and Sliding Contact Under Mixed Lubrication , 1989 .

[10]  J. Kalker.  Numerical calculation of the elastic field in a half-space , 1986 .

[11]  R. D. Gibson,et al.  The elastic contact of a rough surface , 1975 .

[12]  R. S. Sayles,et al.  Effect of Roughness and Sliding Friction on Contact Stresses , 1991 .

[13]  E. Ioannides,et al.  A Fast Solution of the Dry Contact Problem and the Associated Sub-Surface Stress Field, Using Multilevel Techniques , 1991 .

[14]  Ning Ren,et al.  Contact Simulation of Three-Dimensional Rough Surfaces Using Moving Grid Method , 1993 .

[15]  Leon M Keer,et al.  Rough Contact Between Elastically and Geometrically Identical Curved Bodies , 1982 .

[16]  R. S. Sayles,et al.  A Numerical Model for the Elastic Frictionless Contact of Real Rough Surfaces , 1986 .