Response of a panel wall subjected to blast loading

Experimental and Numerical Investigations on Deformation of Cylindrical Shell Panels to Underwater Explosion

“…The displacement time history for various loading conditions for h/l = (0.0, 0.05, 0.1) is shown in Figs 9-11. From the curves it can be seen that the displacement time history at the center of the panel shows a nearly linear trend upto the maximum and found to have small oscillations thereafter as reported in other studies [11,12,20]. This means that most of the kinetic energy imparted to the panel by the shock loading has been dissipated as plastic work.…”

“…Menkes and Opat [18] reported three failure modes, namely, a) large deformation, b) tensile tearing and c) shear failure for explosively loaded clamped beams. Similar failure modes have been found in the case of unstiffened and stiffened plates to air blast loading [11,12]. Ramajeyathilagam et al [19] have also established the first two failure modes for rectangular plates under air backed condition subjected to underwater explosion on the basis of shock tank tests and numerical analysis.…”

“…For the purpose of non-linear finite element analysis, the pressure on each finite element is computed using Eq. 12 time history (both total and free field using Eqs (9) and (12) at the center of the panel (with h/l = 0.1) corresponding to a 50 gm charge weight at 0.2 m standoff is shown in Fig. 4.…”

“…Keil [1,2] has briefly dealt about underwater explosion, failure and damage mechanisms. A number of investigations on stiffened and unstiffened plates and beams subjected to air blast loading [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] have been reported in the literature. There does not appear to be any published work dealing with underwater explosion effects on cylindrical panels.…”

Pulse pressure loading of aircraft structural panels

“…There have been a number of studies carried out in recent years to examine the response of structures to blast loading, using FE methods. Structures that have been examined include flat plates [22][23][24], stiffened plates [24][25][26][27][28], corrugated panels [29,30] and cylindrical structures [31]. Many engineering structures are made from a number of different components which are joined together in some way and hence, the accurate representation of these is essential when attempting to develop an effective FE model.…”