C. Niezrecki et Hh. Cudney, Creating and verifying a research-grade simply supported cylinder with PZTactuation, J SOUND VIB, 228(5), 1999, pp. 961-975
In many aerospace and structural applications, idealized cylinders are used
to approximate more complex structures such as airplane fuselages and rock
et payload fairings. Many authors have created sophisticated models of the
structural response of cylinders excited by a variety of actuators. However
, these models are seldom verified experimentally. None of the models creat
ed to describe the response of a simply supported (SS) cylinder have ever b
een verified. In this work several different boundary conditions are create
d to approximate an ideal SS cylinder. The different boundary conditions te
sted are described and compared with finite-element analysis (FEA) and with
an impedance-based analytical model for a piezoelectric actuator (PZT) exc
iting a SS cylinder. The work presented describes the steps taken in creati
ng a physical boundary condition whichapproximates the ideal boundary condi
tion for a SS cylinder and also evaluates the response of the impedance mod
el for a PZT exciting a SS cylinder. The results indicate that the created
physical boundary condition resembles the ideal SS boundary condition. The
structural response computed by the impedance model is also shown to agree
with the experiment and with the FEA. The results can be used to create oth
er experimental SS cylinders and can also be used in modelling more complic
ated aerospace structures. (C) 1999 Academic Press.