Laminated beam subjected to mechanical input

A mechanical force of the form of is assumed to be acting on the beam. Assuming mid plane strain and curvature as and t

Strain in the MS layer

Corresponding stress in the MS layer

(32.1)

Hence, the voltage response can be obtained as

(32.2)

With the increase in mechanical load, the stresses in different layers will increase. Depending upon the elastic properties of the individual lamina and its orientation, the lamina which reaches the stress just beyond its allowable limit will delaminate. Voltage response at this point is the delaminating voltage. Delaminating stress may be determined using an appropriate failure theory.