Design, Optimization, and Evaluation of A1-2139 Compression Panel with Integral T-Stiffeners
A T-stiffened panel was designed and optimized for minimum mass subjected to constraints on buckling load, yielding, and crippling or local stiffener failure using a new analysis and design tool named EBF3PanelOpt. The panel was designed for a compression loading configuration, a realistic load case...
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Published in | NASA Center for AeroSpace Information (CASI). Reports |
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Main Authors | , , , , , |
Format | Report |
Language | English |
Published |
Hampton
NASA/Langley Research Center
01.06.2012
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Subjects | |
Online Access | Get full text |
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Abstract | A T-stiffened panel was designed and optimized for minimum mass subjected to constraints on buckling load, yielding, and crippling or local stiffener failure using a new analysis and design tool named EBF3PanelOpt. The panel was designed for a compression loading configuration, a realistic load case for a typical aircraft skin-stiffened panel. The panel was integrally machined from 2139 aluminum alloy plate and was tested in compression. The panel was loaded beyond buckling and strains and out-of-plane displacements were extracted from 36 strain gages and one linear variable displacement transducer. A digital photogrammetric system was used to obtain full field displacements and strains on the smooth (unstiffened) side of the panel. The experimental data were compared with the strains and out-of-plane deflections from a high-fidelity nonlinear finite element analysis. |
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AbstractList | A T-stiffened panel was designed and optimized for minimum mass subjected to constraints on buckling load, yielding, and crippling or local stiffener failure using a new analysis and design tool named EBF3PanelOpt. The panel was designed for a compression loading configuration, a realistic load case for a typical aircraft skin-stiffened panel. The panel was integrally machined from 2139 aluminum alloy plate and was tested in compression. The panel was loaded beyond buckling and strains and out-of-plane displacements were extracted from 36 strain gages and one linear variable displacement transducer. A digital photogrammetric system was used to obtain full field displacements and strains on the smooth (unstiffened) side of the panel. The experimental data were compared with the strains and out-of-plane deflections from a high-fidelity nonlinear finite element analysis. |
Author | Kapania, Rakesh K Havens, David Norris, Ashley Bird, R Keith Mulani, Sameer B Olliffe, Robert |
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Copyright | Copyright NASA/Langley Research Center Jun 1, 2012 |
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SubjectTerms | Aluminum base alloys Buckling Compression tests Design Design optimization Displacement Failure analysis Finite element method Metal plates Nonlinear analysis Photogrammetry Stiffeners Strain gauges |
Title | Design, Optimization, and Evaluation of A1-2139 Compression Panel with Integral T-Stiffeners |
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