Browsing by Author "Tiruneh, Kinde"
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Item Optimum Design of Locomotive Disk Brake By Using Finite Element Method(Addis Ababa University, 2015-05) Tiruneh, Kinde; Demiss, Alemu (PhD)A transient analysis for the thermo elastic contact problem of the locomotive disk brakes with heat generation is performed using the finite element analysis. To analyze the thermo elastic phenomenon occurring in the locomotive disk brakes, the occupied heat conduction and elastic equations are solved with contact problems. The numerical simulation for the thermo elastic behavior of locomotive disk brake is obtained in the repeated brake condition. The computational results are presented for the distribution of heat flux and temperature on each friction surface between the contacting bodies. Also, thermo elastic instability (TIE) phenomenon (the unstable growth of contact pressure and temperature) is investigated in the present study, and the influence of the material properties on the thermo elastic behaviors (the maximum temperature on the friction surfaces) is investigated to facilitate the conceptual design of the disk brake system. Based on these numerical results, the thermo elastic behaviors of the four brake materials are discussed and stainless steel with excellent mechanical and thermal properties is selected for design purpose.