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| Buckling Capacity Optimization of Stiffened Panels Based on Ideal Point Method |
| Received:November 22, 2018 Revised:February 25, 2019 |
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| DOI：10.7643/ issn.1672-9242.2019.02.008 |
| KeyWord:stiffened panels buckling optimization design ideal point method |
| Author | Institution |
| TANG Qi-qin |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| LI Bo-yang |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
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| Abstract: |
| Objective To propose a buckling capacity optimal method based on ideal point method in view of the problem that stiffened panels are susceptible to buckling and structural instability in actual conditions. Methods The buckling capacity optimal method was established to maximize the buckling capacity and minimize the weight of the structures subjected to constraints on buckling, maximum von Mises stress as well as crippling, and the multi-objective optimization problem was converted to single-objective problem via ideal point method. Based on ANSYS parametric modeling technology, the integration of buckling analysis and optimization design model was constructed. A single-objective optimal algorithm of DOWNHILL SIMPLEX was adopted to implement the optimization analysis. Results The weight was raised from 0.195 kg to 0.24 kg, and the structural load-capacity was improved from 129.4 kN to 235.84 kN, with an increase of 23% and 82% respectively. Conclusion A compromised design might be achieved by optimization, which may provide a reference for design and applications of the stiffened panel structures. |
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