Numerical Solution Of Lubrication For Aeronautic Gear

Gear was the important part of mechainal product, and also the important drive part of the aeronautic product especially the aeronautic engine .The capability of the gear possibility dicide the level of the product's quality. Lubrication was analyzed for aeronautic gear applies the thermal EHL theory of a line and a finite line contact. And a program has been compiled with C++ language for this.With the multigrid technique and scan technique, a non-Newtonian complete numerical solution for thermal EHL problem of a line contact with the Ree-Eying fluid, and the influence of power and rotate speed for lubricate was analysed. With Gauss-Seidel and Jacobi relaxation, a complete numertical solution for thermal EHL problem of a point contact was obtained, and proved by compare to a computational example of literature. Simultaneity, analyzed the difference of solution between the thermal EHL and EHL. Combined the method of line contact and point contact, a complete numertical solution for thermal EHL problem of finite line contact was obtained. The geometry analysis consolidated the finite line contact, infinitely line contact and the point contact. A comparison has been made between the solution of a finite line contact and infinitely line contact. Variation in the film thickness, the pressure and the temperature with different radius of the end profiles of the cylinder are disussed.A problem of lubricate for aeronautic gear has been disussed, with the thermal EHL of a finite line contact. A comparison has been made of the film thickness, the pressure and the temperature in mesh position. Simultaneity, the influence of different of power and rotate speed was in view. A problem of lubricate for a gear of high speed and heavy load has been disussed, with the non-Newtonian thermal EHL of infinitely line contact.The film thickness, the pressure and the temperature of gear, computed by the thermal EHL theory, has very important meaning for stability while gear working, avoiding fray of gear and enhancing the life of gear.