21st Congress of International Council of the Aeronautical Sciences, Melbourne, Australia, 13-18 September, 1998
Paper ICAS-98-4.11.1

RESEARCH OF ACTIVE VIBRATION CONTROL TECHNOLOGIES FOR A COMPOSITE SHELL

Chen Y., Tao B. -Q., Liu G., Wan J. G., Jin J.
Nanjing University of Aeronautics and Astronautics, PRC

Keywords: active vibration control, composite shell

In this article, a strain actuation mechanical model is given to analyze the matching relationship between actuators, composite structures and bonding layers. A finite element model is derived to make vibration analysis of a composite shell with surface bonding piezoelectric ceramics using decoupled mechanic-electrical method. An adaptive control system is set up to suppress the transverse vibration response and noise radiation of a glass fiber/epoxy cylindrical shell. Results show that transverse vibration modes of the shell can be effectively suppressed, and the radiation noise is also decreased.

view full paper