Vibration Damping Using Resonant Shunted Shear-Mode Piezoceramics

Piezoceramic shunted damping concept: testing, modelling and correlation

“…The same comments on equation (2a), at the end of the paragraph that follows it, are also valid here for equation (4), except that the exact and approximate resonant PSD formulas comparison and their validation with experimental data [6] were made in [8]. Therefore, to design PSD applications, it is capital to know the modal effective EMCC; then, its square and square root can inform on the expected maximum added resistive and resonant PSD, respectively.…”

“…For the resistive PSD concept experimental evaluation and assessment, the maximum added damping is calculated using the measured OC and SC natural frequencies for both SW and PW via this approximate relation [7][8][9]:…”

“…gael.chevallier@supmeca.fr coefficient (EMCC) that measures the energy conversion efficiency of a piezoceramic material [2][3][4][5], the generalized (or effective) EMCC parameter was introduced [6][7][8][9] to measure the patches energy conversion when they are bonded to, or integrated in, a host structure [10,11]. Moreover, the added damping was shown to be proportional to this parameter [12].…”

“…The same electric wiring has been considered in [18] but for six piezoceramic pairs that were individually wired in parallel for multimode resonant PSD and a viscous damping was taken into account in the mechanical impedance formulation. The latter has been combined to the finite element (FE) method [8,12], a Navier analytical solution [19] and a shunt tuning method based on the measured electrical impedance [20] rather than pole placement and transfer function methods proposed in [6] and used in [7,8,12,[17][18][19].…”