Fuel Tank Vibration

Application ID: 87731

This model analyzes the frequency response of a fuel tank partially filled with fluid. The tank is submitted to a vertical acceleration.

Two modeling methods are considered to represent the fluid: a traditional method of smearing the mass of the fluid through the wetted surface of the fuel tank, and a multiphysics approach where the acoustic pressure within the fluid is specifically modeled.

The two methods show significant differences, highlighting how important it is to accurately capture the vibroacoustic behavior when predicting stress or fatigue life on fluid-filled cavities.

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