During their operational life, the flight vehicle structures may be exposed to a variety of time-dependent loads induced by nuclear blast,gust, sonic boom, shock wave, fuel explosion, etc. Among all the geometrical structural configurations, the ones of a cylindrical cross section are most commonly used as parts of such vehicles, In this paper the control of the dynamic response of cantilevered anisotropic thin-walled beams of arbitrary cylindrical cross sections is considered. An integrated dual approach aimed at controlling the dynamic response of anisotropic cantilevered thin-walled beams to blast and sonic-boom loaing is presented. The approach is based upon the simultaneous implementation of structural tailoring and adaptive materials technology. Whereas structural tailoring uses the anisotropy properties of advanced composite materials, the adaptive materials technology exploits the converse effect of piezoactuators bonded or embedded into the host structure. A combined dynamic control law relating the piezoelectrically bending moment induced at the beam tip with the various kinematic response qaantities is implemented and its effects upon the closed-loop dynamic response characteristics are investigated. The obtained results reveal the powerful role played by abovementioned integrated control methodology towards enhancing the dynamic response of thin-walled beam cantilevers to transient loading.
Dynamic response control of thin-walled beams to blast pulses using structural tailoring and piezoelectric actuation
Transactions of the ASME, Journal of Applied Mechanics ; 65 , 2 ; 497-504
1998
8 Seiten, 10 Bilder, 26 Quellen
Aufsatz (Zeitschrift)
Englisch
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