Contact analysis of nominally flat surfaces
Shellock, Matthew R.
Kwon, Young W.
MetadataShow full item record
A proper understanding of the mechanism of contact between two or more nominally flat surfaces is crucial in the design process of many devices. This thesis, using analytical and computational methods, models the former through the use of fractal characteristics at the contact interface. A parametric analysis of the fractal surface was completed in order to properly understand fractal geometry and its effect on surface properties. The fractal surface was simplified so that Hertz theory could be used to model surface deformation and resulting contact stresses. The data gathered from the model was then input into an existing electromagnetic rail gun program to study the contact surface effect on exit velocity, temperature, electrical conductivity, and contact area ratio. Finally, a study of the fractal parameter effects on the electromagnetic rail gun was completed.
Showing items related by title, author, creator and subject.
Collins, Patricia Jacqueline (Monterey, California. Naval Postgraduate School, 1988-12);This study provides a guide to a series of systematic techniques used to create fractal mountains. The fractal mountains are created through an Interactive System for Fractal Mountains (ISFM) . To create the fractal mountains ...
DeVito, C.L.; Little, W.A. (1988-12-15);There is a strong feeling among many researchers that certain physical phenomena are fractal in nature. The difficulty, in any given case, is to make precise what one means when one says that something is fractal. An ...
Kirkpatrick, Gary W. (Monterey California. Naval Postgraduate School, 1999-06);The deleterious effects of fretting on the fatigue properties of a material have been known since the work of Warlow-Davies in 1941. However, a widely accepted fretting fatigue life prediction method still does not exist ...