Improvement of effectiveness in active triangular plate vibration reduction

In the paper, a new method of the effectiveness increase of
the active asymmetrical structure vibration reduction via PZTs is proposed. The
new method is based on adding successive PZTs to quasi-optimal sub-areas (QO) in
the determined order. A triangular plate with the C-F-F boundary conditions is
chosen for this purpose. Only the second mode of the plate is taken into
consideration in this study. To realise the aim, first the QO are determined. To
each QO, PZTs are bonded from one to seven according to the following rule;
namely, the consecutive PZT takes up free surface with locally maximal curvature
on the QO. The effectiveness of the vibration reduction is measured in
particular sense. Numerical experiments are performed to confirm the validity of
this idea.