Hybrid mathematical/isogeometric analysis of piezoelectric energy harvester composite under dynamic bending.

In this paper, an innovative hybrid mathematical/computational scheme is implemented to evaluate the energy harvested via structural vibration. The governing voltage differential equations of the piezoelectric composite beam are coupled with the NURBS-based isogeometric analysis (IGA). Numerical experiment has been done on piezoelectric composite beams with various thickness. High order IGA element has been proven less prone to the shear locking phenomena in the literatures. The results presented in this paper show greater accuracy on dynamic responses and energy estimation are obtained on a very thin beam by means of IGA compare to standard FEM.