Vibration of thermomechanically loaded flat and curved panels taking into account geometric imperfections and tangential edge restraints

study of the effects played by tangential ede constraints on the vibrational behavior of single/multilayered doubly-curved shallqw pan@ subjected to complex thezmomechanical loading systems acting in the pre/postbuckling regirhrls is presented. In addition, effects related to the transverse shear and initial geometric imperfe$ons are incorporated and their influence is highlighted. Numerical ilhtsttations based on a high*-order theory undet%ne.the strong influence played by the above mentioned &e&s, in general, and by tangent&edge matrams on the alleviation of the intensity of the snap-through buckling, its delay and suppression, in particular. 0 1997 Elsevier Science Ltd.