Equivalent stiffness and damping of sandwich piezoelectric beams submitted to active control

Laeticia Duigou (1) , El Mostapha Daya (1) , Michel Potier-Ferry (2)

1 LG2M - Laboratoire de Génie Mécanique et Matériaux
2 LPMM - Laboratoire de physique et mécanique des matériaux

In this paper, a modal approach is realized to define the damping properties of piezoelectric/elastic/piezoelectric beams. This method is based on the classical laminated beam theory and some simple assumptions about the electric fields. This leads to an electromechanical beam constitutive law. The piezoelectric layers play the role of sensor and actuator and two feedback control laws are considered. The equivalent stiffness, eigenfrequencies and loss factors of the whole system beam/control device are obtained.

Domaines: Mécanique [physics.med-ph]

Laeticia Duigou, El Mostapha Daya, Michel Potier-Ferry. Equivalent stiffness and damping of sandwich piezoelectric beams submitted to active control. Smart Materials and Structures, 2006, 15, pp.623-630. ⟨10.1088/0964-1726/15/2/046⟩. ⟨hal-00400351⟩