Poisson effect on the response of smart composite beams

Abstract- This paper deals with the effect of Poisson ratio on the static response of smart laminated composite beam. The actuation performance of smart beams with extension and shear mode piezoelectric orientation has been investigated. The first-order shear deformation beam theory has been implemented for modelling the problem. The piezoelectric stress resultants are expressed in terms of Heaviside discontinuity functions. The state-space approach is used to obtain an analytical solution for the response of smart beams with different boundary conditions. The effect of actuator length, location of piezoelectric patches, fibre orientation, boundary condition and Poisson ratio on beam deflection, has been investigated. Also solution for response of beams with complete piezoelectric layer has been obtained with the same procedure and compared with the piezoelectric patch that has the same length. Results showed, neglecting Poisson effect in calculations cause significant errors in calculating response of angle ply beams with extension mode actuators. Keywords – , , , patch