Abstract
The objective of this paper is to investigate the parametric characteristics of oscillating beam using an analytical theory of beam vibration . Analytical investigation of the bending oscillations of a finite elastic beam is considered for criteria based on minimal acoustic radiation. The solution of the task is defined by solving of Helmholtz equation and inhomogeneous differential equation for beam bending vibration with harmonic time dependence. For calculation of the acoustic field a model of a plane piston, which is set in an infinite rigid baffle, is used.
Highlights
The sound radiation from a vibrating beam is of practical importance and has been investigated extensively over many years
As beam acoustic radiation control is defined by actuator parameters, such as the delayed phase of actuator forces, their location and distribution law along a beam, all of them are analyzed
For most of cases the results show that first four modes of supported beam oscillation are enough to be considered for the noise radiation investigation
Summary
PARAMETRIC INVESTIGATION OF ACOUSTIC RADIATION BY A BEAM UNDER LOAD AND ACTUATOR FORCES. The objective of this paper is to investigate the parametric characteristics of oscillating beam using an analytical theory of beam vibration. Analytical investigation of the bending oscillations of a finite elastic beam is considered for criteria based on minimal acoustic radiation. The solution of the task is defined by solving of Helmholtz equation and inhomogeneous differential equation for beam bending vibration with harmonic time dependence. For calculation of the acoustic field a model of a plane piston, which is set in an infinite rigid baffle, is used
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