N2 - The linear 3D piezoelasticity theory along with active damping control
(ADC) strategy are applied for non-stationary vibroacoustic response
suppression of a doubly fluid-loaded functionally graded piezolaminated
(FGPM) composite hollow cylinder of infinite length under general
time-varying excitations. The control gain parameters are identified and
tuned using Genetic Algorithm (GA) with a multi-objective performance
index that constrains the key elasto-acoustic system parameters and
control voltage. The uncontrolled and controlled time response histories
due to a pair of equal and opposite impulsive external point loads are
calculated by means of Durbin’s numerical inverse Laplace transform
algorithm. Numerical simulations demonstrate the superior (good)
performance of the GA-optimized distributed active damping control system
in effective attenuation of sound pressure transients radiated into the
internal (external) acoustic space for two basic control configurations.
Also, some interesting features of the transient fluid-structure
interaction control problem are illustrated via proper 2D time domain
images and animations of the 3D sound field. Limiting cases are considered
and accuracy of the formulation is established with the aid of a
commercial finite element package as well as comparisons with the current
literature.
JO - Archives of Acoustics
L1 - http://www.czasopisma.pan.pl/Content/101400/PDF/08_paper.pdf
L2 - http://www.czasopisma.pan.pl/Content/101400
IS - No 3
EP - 381
KW - active structural acoustic control (ASAC) thick cylindrical shells
KW - exact elasto-acoustic analysis
KW - time-domain solution
KW - intelligent system
KW - sound field attenuation
ER -
A1 - Hasheminejad, Seyyed M.
A1 - Rabbani, Vahid
PB - Committee on Acoustics PAS, PAS Institute of Fundamental Technological Research, Polish Acoustical Society
VL - vol. 40
JF - Archives of Acoustics
SP - 359
T1 - Active Transient Sound Radiation Control from a Smart Piezocomposite Hollow Cylinder
UR - http://www.czasopisma.pan.pl/dlibra/docmetadata?id=101400
DOI - 10.1515/aoa-2015-0039