Investigating effect of Poisson ratio on static response of smart beams with displacementbased theories

This paper investigates the Poisson effect on deflectionof smart beams. Two types of smart beams studied;beams with shear mode actuators and beams withextension mode actuators, are investigated. The firstorder and high order shear deformation beam theory hasbeen used. For beams with actuators patches, Heavisidefunction used for modeling the problem. The state spaceapproach is used to obtain analytical solution for thestatic response of smart beams with different boundaryconditions. The effects of mechanical and electricalPoisson ratio, order of used theory, actuator length,location of actuators, orientation of fiber and boundarycondition on beams deflection, has been investigated.The response of beams with actuator layer has beenobtained with two different methods and compared.Results shows that neglecting Poisson effect incalculations cause significant errors in calculatingdeflection of angle ply beams with extension modeactuators and also suggest that first order theory isoptimal to use comparing with high order theory.

کلیدواژه ها:

Piezoelectric ، actuator ، high order theory ، Poisson effect