Reduction of structural noise inside crane cage by piezoelectric actuators - FEM simulation

In the paper the finite element simulations of the
reduction of the noise inside the crane cage by piezoelectric actuators glued to
chosen external walls is discussed. The whole cage structure and internal
acoustic medium is modelled and piezoelectric elements are dispersed. The first
two lower natural frequencies are considered. The completely different results
of reduction are obtained for the analysed modes. The aim of the analysis is to
show the possibility of application of piezoelectric elements to active noise
and vibration cancellation for the realistic machine structure as crane cage.