DYNAMIC ADMITTANCE MATRIX OF PIEZOELECTRIC CANTILEVER BIMORPHS

The matrix that relates the harmonically varying driving parameters: a moment M at the tip, a force F at the tip, a uniformly applied body f orce p and voltage V to their response parameters: the tip rotation al pha, the tip deflection delta, the volumetric displacement V and the e lectrode charge Q, have been determined, The electrical element of thi s matrix is the (4,4) element, which is the electrical capacitance, he nce we call this the dynamic admittance matrix, It is a four by four s ymmetric matrix having a purely electrical part, a purely elastic part and a mixed (piezoelectric) part, A common factor in nearly all eleme nts describes the resonance frequencies that are to be expected. [88]