The motion of the connecting rod is a combination of crank-end rotation and the reciprocating motion of the piston end The stresses acting on the connecting rod are caused by compressive cycle cylinder pressure and inertia force. The magnitude and direction of both forces change during an operation. In this study, quasi-dynamic stress analysis of a 4 stroke engine connecting rod is presented in its maximum speed. Finite Element techniques is used in this analysis. Stress-Time diagram is plotted during operation. This diagram is used for fatigue analysis. Finally the acquired diagram is compared with experimental results. By using calculation techniques Stress-Time diagram is resulted for any engine speed.
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