Elastohydrodynamic solution for concentrated elliptical point contact of machine elements under combined entraining and squeeze-film motion

This paper presents numerical solution of isothermal elastohydrodynamic con junction for concentrated contact of elastic bodies under the elliptical po int contact condition. The solution includes the effect of squeeze-film mot ion that occurs under transient conditions due to the application of cyclic loads and/or oscillating motions in machine elements. It is shown that thi s time-dependent behaviour increases the load-carrying capacity of the cont act which is largely responsible as a mechanism of lubricant film formation when the low speeds of entraining motion yield a low film thickness. An ex trapolated oil-film thickness formula is also presented that can be employe d under dynamic conditions.