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The reliability of any mechanical system, in which the linear displacement of a piston is converted into the
rotation of a power transmission shaft, strongly depends on the reliability of the crankshaft. The crankshaft is the critical
component and any damage occurring to the crankshaft may put the mechanical system out of order. The numerical finite
element simulation of crankshafts with multiple rods is often time consuming even if quite accurate if the aim is to
evaluate the stress-strain behavior at the notched area and verify the component. The development of a simplified
numerical model would prove effective to reduce the time needed to reach a good approximation design of the crankshaft.
The aim of this paper is to give the designer a numerical procedure that allows to determine the strain and stress state and
verify crankshafts having two or more rods.