The Buckling Optimization on Composite Beam with Hat Stiffener

Abstract:

The paper carried out the buckling optimization on composite beam with hat stiffener by taking ply angle as optimal variables and the critical buckling load (CBL) as the optimal objective. Firstly, the paper established the mathematical optimization model, and then carried out sensitivity analysis of ply angle through Optimal Latin Hypercube Design, finally optimized the design of the layer using Genetic Algorithm. The results show that the CBL of stiffened beam with the optimized ply angle is increased by 64% than that with initial ply angle; CBL can be increased by changing the ply angle, the sheet should adopt the 0° or 90° layer, while the surface and center of stiffener should adopt ±45° layer and the rest should be 0° or 90°.

• Periodical: Advanced Materials Research (Volumes 953-954)
• Pages: 1649-1652
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.953-954.1649
• Online since: June 2014
• Authors: Jia Bo Qiu*, Xi Zhu
• Keywords: Buckling, Composite Beam with Hat Stiffener, Genetic Algorithm (GA), Sensitivity Analysis

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