Mechanisms in damping of mechanical vibration by piezoelectric ceramic-polymer composite materials

Biomimetic staggered composites with highly enhanced energy dissipation: Modeling, 3D printing, and testing

“…Several methods have been proposed to design better performing damping materials, like introducing piezoelectric or magnetostrictive phases (Law et al, 1995;McKnight and Carman, 1999), employing phase transitions (Piedboeuf et al, 1998;San Juan et al, 2009), synthesizing nanocomposites (Suhr et al, 2005;Sun et al, 2009), and adding negativestiffness phases (Jaglinski et al, 2007;Lakes et al, 2001). Nevertheless, one cannot underestimate the role of biological materials, especially those with high specific loss modulus, in inspiring and stimulating the design of materials with high energy dissipation.…”

A Study on PZT-Epoxy Piezoelectric Composites by Dynamic Mechanical Analyzer

“…The piezoelectric composite system can be regarded as a power supply. According to the basic principle of electric circuit [15], when the external impedance Z x , or simplified as a matching resistance of R x , complement to the internal impedance Z, then the power dissipation in the internal and external resistors would be maximum. The power dissipations at both open circuited and short circuited conditions are all low, theoretically, null.…”

Use of shunted shear-mode piezoceramics for structural vibration passive damping

“…It is the most studied shunted damping type. However, the capacitive [8] and resistive [9][10][11][12][13][14] shunted damping types were less studied. The former leads to a frequency dependent stiffness, whereas the latter provides a frequency dependent damping that can be handled as the classical viscoelastic damping [10].…”