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- Title
Optimum design of laminated composite under axial compressive load.
- Authors
IYENGAR, N; VYAS, NILESH
- Abstract
In the present study optimal design of composite laminates, with and without rectangular cut-out, is carried out for maximizing the buckling load. Optimization study is carried out for obtaining the maximum buckling load with design variables as ply thickness, cut-out size and orientation of cut-out with respect to laminate. Buckling load is evaluated using a 'simple higher order shear deformation theory' based on four unknown displacements u, v, w and w. A C continuous shear flexible finite element based on HSDT model is developed using Hermite cubic polynomial. It is observed that for thick anti-symmetric laminates, the non-dimensional buckling load decreases with increase in aspect ratio and increase in fibre orientation angle. There is a decrease in the non-dimensional buckling load of symmetric laminate in the presence of cut-out.
- Subjects
COMPOSITE materials; LAMINATED materials; MATERIALS compression testing; AXIAL loads; MECHANICAL buckling; GENETIC algorithms; FINITE element method
- Publication
Sādhanā: Academy Proceedings in Engineering Sciences, 2011, Vol 36, Issue 1, p73
- ISSN
0256-2499
- Publication type
Article
- DOI
10.1007/s12046-011-0009-5