چكيده به لاتين
Abstract:
One of the most major parameters in the competition between transportation modes is decreasing travel times specifically for intercity journeys. Railway transportation is supposed to promote its position by increasing the speed of vehicles since it has gained a special importance due to its high level of safety and suitable price. With this regard, the railway system of the country requires high speed trains. In this study, the high speed train ICE-3 gearbox has been designed. The first and second main elements of gearbox are gear and shaft respectively. In order to design a gearbox, pre-decisions such as material selection are to be made first. Among all types of steel, carburized steel- for its high wear strength is the optimal choice in producing gears. AGMA standard has been employed in the primary design of gears which requires to be verified. The design of gears is based on contact and bending strengths. Finite element analysis through ABAQUS software has been implemented in the procedure of design to verify the stresses and has been compared to the predicted magnitudes. To validate the results, the gears have also been analyzed utilizing KISSsoft considering two authentic standards namely DIN and ISO. After finalizing the design of gears, the Shaft has been designed according to fatigue criteria. The primary design of the Shaft has been determined by Goodman criterion and validated via KISS soft with respect to DIN and AGMA standards. Finally, the other parts of gearbox such as ball bearings and coupling have been selected and after finalizing the shaft diameter, deflection and its resonance frequency have been investigated as the design variable.
Keywords: High speed train, gearbox, gear, finite element, standard.
