Optimization for Buckling of Composite Sandwich Plates

Abstract

Consider a composite sandwich plate with balanced or unbalanced anisotropic composite laminated faces and an ideally orthotropic core. A closed-form solution of the buckling load is derived for the composite sandwich plates consisting of cross-ply symmetric laminate faces with all edges simply supported. In addition, a general scheme is developed for the composite sandwich plates with arbitrary sandwich layups, boundary, and loading conditions. By combining the present buckling analysis with PowelPs conjugate direction method, an optimal algorithm is established to find the optimal sandwich layup in resisting biaxial compression, as well as in-plane shear loads.

Lamination Parameters for Sandwich and Hybrid Material Composites

“…A better approximation of theD matrix can be developed by taking advantage of the structure of the lamination parameters in Eqs. (11)(12)(13)(14)(15).…”

“…Sandwich composite optimization for a wide range of applications has been presented [13][14][15][16][17][18][19][20]. Among these, very few approaches using lamination parameters are available, which is the focus of this work.…”

Skin Panel Optimization of the Common Research Model Wing Using Sandwich Composites

“…Practical experience shows that their benefits come alongside a number of unique engineering challenges, which must be carefully considered in realistic designs [13]. The potential advantages and challenges have motivated a wide range of research covering topics such as characterization of failure modes [14][15][16], development of modelling strategies [17,18] and on optimization of sandwich composites [10][11][12][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. Some of the relevant literature pertaining to the latter have been discussed further.…”