Dynamic response of composite plates with cut-outs, part I: Simply-supported plates

Free vibration of square laminates with delamination around a central cutout using HSDT

“…They employed a method based on the use of variational principles in conjunction with finite difference technique. Rajamani and Prabhakaran [3,4] studied the effect of a centrally located square cutout on the natural frequencies of square, simply supported and clamped symmetrically laminated composite plates for free and forced vibration cases. They assumed that the effect of cutout is equivalent to an external loading.…”

Dynamic performance of sandwich composite plates with circular hole/cut-out: A mixed experimental–numerical study

“…Examples include-axial in-plane loads [1] or thermal loads [2] resulting in global buckling of the plate or micro buckling of the fibers [3], free and forced vibration studies with different boundary conditions [4][5][6][7][8], effects of numerous numbers of hole within a plate subjected to various loading conditions [9]. Since holes/cut-outs result in stress concentration and eventually turn out to be the influential parameters for the design purpose, researchers have used various closed form solutions [10] as well as developed different types of finite elements using various assumptions related to plate theories, such as Rayleigh-Ritz method [11] theory [12] etc.…”

Free vibration analysis of an elliptical plate with cut-out

“…Aksu and Ali [12] also applied the finite difference method to analyze a rectangular plate with more than two holes. Rajamani and Prabhakaran [13] assumed that the effect of a hole is equivalent to an externally applied loading and carried out a numerical analysis based on this assumption for a composite plate. Rajamani and Prabhakaran [14] investigated the effect of a cut-out on the natural vibration characteristics of an isotropic and orthotropic plates under simply-supported and clamped boundary conditions.…”