An analysis and simulation of Yamaha 250 four-stroke gasoline engine thrust

Yamaha 250 four stroke petrol engine thrust is removed from its original form and is so deformed after a time period of performance. Regarding the importance of this engine in combat operations, the need to investigate the causes of the failure of this piece gets more imperative. In this study, simulation and element finite analysis of the tension on the thrust in crisis mode using ABAQUS software will be taken into account after examining and identifying common type of steel used in bearings. Analysis in three modes is calculated: without friction, friction and when thrust is exposed to abrasion. The first mode is assumed that the coefficient of friction interface between thrust and shaft is small so that we can assume that without friction in the definition of the contact between two levels in the software. The second mode, the analysis will be discussed assuming that the coefficient of friction between the thrust and shaft has been calculated. And in the third mode, regarding the wear of thrust during engine operation, we will actually analyze and discuss it. Finally, the discussed results and suggestions in order to improve performance will be presented.