Buckling and Damage Resistance of Transversely-Loaded Composite Shells View Online By Brian L. Wardle
| Title | : | Buckling and Damage Resistance of Transversely-Loaded Composite Shells |
| Author | : | Brian L. Wardle |
| Format | : | Paperback |
| Page | : | 292 pages |
| ISBN | : | 1288915454 |
Experimental and numerical work was conducted to better understand composite shell response to transverse loadings which simulate damage causing impact events The quasi static, centered, transverse loading response of laminated graphite epoxy shells in a 45 sub n O sub n sub s layup having geometric characteristics of a commercial fuselage are studied The singly Experimental and numerical work was conducted to better understand composite shell response to transverse loadings which simulate damage causing impact events The quasi static, centered, transverse loading response of laminated graphite epoxy shells in a 45 sub n O sub n sub s layup having geometric characteristics of a commercial fuselage are studied The singly curved composite shell structures are hinged along the straight circumferential edges and are either free or simply supported along the curved axial edges Key components of the shell response are response instabilities due to limit point and or bifurcation buckling Experimentally, deflection controlled shell response is characterized via load deflection data, deformation shape evolutions, and the resulting damage state Finite element models are used to study the kinematically nonlinear shell response, including bifurcation, limit points, and postbuckling A novel technique is developed for evaluating bifurcation from nonlinear prebuckling states utilizing asymmetric spatial discretization to introduce numerical perturbations Advantages of the asymmetric meshing technique AMT over traditional techniques include efficiency, robustness, ease of application, and solution of the actual not modified problems The AMT is validated by comparison to traditional numerical analysis of a benchmark problem and verified by comparison to experimental data Applying the technique, bifurcation in a benchmark shell buckling problem is correctly identified Excellent agreement between the numerical and experimental results are obtained for a number of composite shells although predictive capability decreases for stiffer thicker specimens which is attributed to compliance of the test fixture Restraining the axial edge simple support has the effect of creating a complex response which involves unstable bifurcation, limit point buckling, and dynamic collapse
Title: Buckling and Damage Resistance of Transversely-Loaded Composite ShellsPosted by:
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Experimental and numerical work was conducted to better understand composite shell response to transverse loadings which simulate damage causing impac
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