Rotordynamic Analysis of a Crankshaft

Application ID: 35841

See how to perform a vibration analysis of the crankshaft of a 3-cylinder reciprocating engine in this tutorial model. Due to the eccentricity of the crank-pin and balance masses on the crankshaft, it undergoes self-excited vibration under rotation. The crankshaft is modeled using solid elements to accurately capture the effects of the eccentricity of the crank-pin and balance masses.

The objective with this tutorial model is to demonstrate how you can study the transient response of the rotor and the orbits of the balance masses on the shaft. The simulation results include the stress and pressure profile in the crankshaft, orbits of the center of the journals, and lateral displacement components of a journal.

Note that the Solid Rotor interface is used to model the rotor, while the bearings are modeled using the Hydrodynamic Bearing interface.

This model example illustrates applications of this type that would nominally be built using the following products: