Optimum shape for buckling and post-buckling behavior of a laminated composite panel with I-type stiffeners |
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| Authors: | Gwang-Rog Lee Won-Ho Yang Myung-Won Suh |
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| Affiliation: | (1) Graduate School, Department of Mechanical Engineering, Sungkyunkwan University, 440-746 Kyunggi-do, Korea;(2) School of Mechanical Engineering, Sungkyunkwan University, 440-746 Kyunggi-do, Korea;(3) Fracture Mechanics Lab., School of Mechanical Engineering, Sungkyunkwan University, Suwon, 440-746 Kyunggi-do, Korea |
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| Abstract: | A shape optimization of stiffener was conducted to increase buckling load or failure load with stiffened laminated composite
panel of I-type under compression loading. Design variables are cap length, web length, and/or thickness under the constraint
of volume constancy. The objective function is buckling load and failure load of post-buckling based on Tsai-Hill theory using
ABAQLJS 5.8 for analysis and Optimizer on Broydon-Fletcher Goldfarb-Sharno Method and Augmented Lagrange Multiplier Method.
The effects of relative length of a web and a cap of stiffener on buckling load and failure load of post-buckling were investigated
with the results of optimum design. |
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| Keywords: | Stiffened Composite Panel Buckling Post-Buckling Buckling Load Failure Load Design Variable |
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