潤滑油の限界せん断応力特性に基づくトラクションドライブの設計

概要

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The elastohydrodynamic equation of a line contact is solved by using a finite-element method incorporating a lubricant model of limiting shear stress for a full range of Johnson's lubrication map. The influences of operating parameters (load, speed, material, diameter of roller), slip and limiting shear stress on film thickness, pressure distribution, and traction force are studied with a traction fluid for the design of traction drives. Maximum traction coefficients of this calculation, an approximate formula based on the examination of the calculation and the experimental data are investigated for the case of the traction fluid Santotrac 50. The existence of the limiting shear stress does not greatly influence the film thickness. The heavier the load and the higher the elasticity of the material, the smaller the slip with which the traction coefficient reaches a fixed value controlled by the limiting shear stress. The influences of these operating parameters on the traction coefficient become negligibly small for the range of slip (S≥2%) with the heavy load. The regions of effective pressures sufficient to yield the maximum shearing properties from the lubricants are proposed by the calculation, an approximate formula and experimental data.
一般社団法人日本機械学会の論文
1991-03-25