Shape and Mass Optimization of the Connecting Rod using Rigid Body Dynamics and Finite Element Method
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Abstract
Connecting rod is one of the major components in the automotive engine which transmits the reciprocating motion of the piston into the rotary motion of the crankshaft. The engine’s performance and efficiency are greatly influenced by the optimum design of the connecting rod. This numerical investigation ascertains the effect of shape and mass on the transient structural stability and integrity of the connecting rod. The solid model of the connecting rod is developed using PTC Creo. The kinematic movements between the joints and forces are assessed using the rigid body dynamics approach. The shape and mass of the connecting rod are optimized by using the shape finder tool of the finite element method using the outcomes of rigid body dynamics. The optimized connecting rod possesses better structural stability and comparable factor of safety as evaluated by comparing the transient structural deformation, localized and equivalent von-misses stress of the standard and shape optimized connecting rod.
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