A topology optimization formulation for transient design of multi-entry laminated piezocomposite energy harvestingdevices coupled with electrical circuit - Salas Varela, Ruben Andres; Ramírez Fernandez, Francisco Javier; Montealegre Rubio, Wilfredo; Silva, Emílio Carlos Nelli; Reddy, J. N. (International Journal for Numerical Methods in Engineering, 2018)