Stability of stiffened plates using high precision finite elements

Parametric modeling, higher order FEA and experimental investigation of hat-stiffened composite panels

“…Detailed analysis and modeling of isotropic stiffened panels can be traced back to early last century when FEA method became popular [1]. In recent decades, researchers have begun to focus on composite stiffened panels [2][3][4][5][6][7][8][9][10][11].…”

“…Advances in manufacturing and global and local finite element analyses have made it possible to determine with confidence the strength, durability, failure modes and damage tolerance of stiffened composite panels [1][2]. When investigating the parametric design of stiffened composite panels, a first parameter to consider could actually be the manufacturing methods (and associated defects) that will affect the mechanical properties of the parts, and details such as void content, thickness variations, and corner smoothness.…”

Free linear vibration and buckling of super-elliptical plates resting on symmetrically distributed point-supports on the diagonals

“…Besides, the loss of stability is one of the crucial failure phenomena in the analysis of plates, and the critical load is of practical importance [7]. In the excessive literature on the free vibration analysis and the buckling behavior of plates of numerous shapes [8][9][10][11][12][13][14][15][16], the studies dealing with point-supports are considerably limited in number , and their numerical results are mostly focused on the analysis of square plates resting on symmetrically placed four point-supports on the diagonals [19][20][21][22][23][24][25][26][27].…”

Aeroelastic Analysis of Rotor Blades Using Three Dimensional Flexible Multibody Dynamic Analysis

“…However, in the absence of repeated symmetry conditions the finite element method becomes very demanding because of the extensive number of elements. The beam-shell model requires compatible displacement fields for both the beam and shell elements [Shastry et al (1976); Koko and Olson (1991); Liao and Reddy (1990); Jiang and Olson (1994)]. However, as discussed by Jiang and Chernuka (1995) this approach imposes extensive modeling requirements.…”