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Showing 1 to 17 of 17 for “"Buckling and Postbuckling"”.
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Vibration, buckling and postbuckling of laminated composites with delaminations
Free vibration, buckling and postbuckling analyses of laminated composite plates with multiple delaminations are presented. A fInite element method based on a layer-wise laminated composite plate theory is developed to formulate the problem. Geometric nonlinearity in the sense of von Karman and the …
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Thermal buckling and postbuckling of symmetrically laminated composite plates
… paper discusses an investigation into thermal buckling and post-buckling of symmetrically laminated composite plates. In this study, thermal buckling is investigated for laminates under two different simple support conditions, fixed and sliding. These laminates are subjected to the conditions …
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Buckling and postbuckling analysis of delaminated beams under compressive loads
Two different studies are carried out to understand the influence of geometric parameters on the buckling behavior of a delaminated beam. In the first part, a simple model for predicting the linearized buckling of a composite beam with multiple delaminations is described. The study employs an …
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Prebuckling, Buckling, and Postbuckling Response of Segmented Circular Composite Cylinders
Discussed is a numerical and experimental characterization of the response of small-scale fiber-reinforced composite cylinders constructed to represent a fuselage design whereby the crown and keel consist of one laminate stacking sequence and the two sides consist of another laminate stacking …
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Buckling and postbuckling behavior of laminated composite plates with ply dropoffs
… Institute of Technology, Dept. of Aeronautics and Astronautics, 1986.
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Buckling and postbuckling behavior of unbalanced and unsymmetric laminated graphite/epoxy plates
… Institute of Technology, Dept. of Aeronautics and Astronautics, 1986.
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Buckling and postbuckling behavior of prolate spheroidal shells under uniform external pressure
… method is used to determine both the buckling and postbuckling behavior of completely, enclosed prolate spheroidal shells under uniform external pressure. It is assumed that the shells are isotropic and elastic, and have a uniformly thin wall. It is further assumed that the prebuckling …
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Numerical Methods for the Analysis of Buckling and Postbuckling Behavior of Arch Structures
Made available in DSpace on 2014-12-10T22:21:28Z (GMT). No. of bitstreams: 1 7114784.pdf: 1934260 bytes, checksum: fc6f6210afe5fe8a708e7f6719f8c13e (MD5) Previous issue date: 1970
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Buckling and postbuckling of flat and curved laminated composite panels under thermomechanical loadings incorporating non-classical effects
… models which can be used to predict the buckling, post buckling and vibration behavior of flat and curved composite panels under thermomechanical loadings are developed in this work. Both models are based on higher-order transverse shear deformation theories of shallow shells that include …
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On a moderate rotation theory for anisotropic shells
… for anisotropic shells, proposed by Schmidt and Reddy. All aspects of the derivations are explicitly covered and a finite element formulation of the theory is developed for the solution of test cases. Specific forms of the equations for rectangular plates, cylindrical and spherical shells are …
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Delamination buckling, postbuckling, and growth in axially loaded beam-plates
… cracks will be referred to as delaminations. Buckling, postbuckling, and growth of delaminations in these beam-plates will be analyzed. A finite element method in which all of the terms of the stiffness matrices are obtained by exact integration is employed to determine the linear buckling …
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Scale effects in buckling, postbuckling and crippling of graphite-epoxy Z-section stiffeners
… between the responses of the small scale model and full size component. This relationship may be predicted by dimensional analysis or through mechanics formulations. The presence of physical constraints may prevent the complete reproduction of all responses in small scale models. Scaling …
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Torsion of Elliptical Composite Cylindrical Shells
… end of the cylinder relative to the other. Prebuckling, buckling, and postbuckling responses are examined, and material failure is considered. Four elliptical cross sections, defined by their aspect ratio, the ratio of minor to major radii, are considered: 1.00 (circular), 0.85, 0.70, and 0.55. …
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Thermal and Mechanical Response of Curved Composite Panels
… in airframe fuselage applications. An understanding of structural response at elevated temperatures is required for anticipated future high speed aircraft applications. This study concentrates on the response of unstiffened, curved composite panels subjected to combinations of thermal and …
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Numerical and experimental investigation of the bending response of thin-walled composite cylinders
A numerical and experimental investigation of the bending behavior of six eight-ply graphite-epoxy circular cylinders is presented. Bending is induced by applying a known end-rotation to each end of the cylinder, analogous to a beam in bending. The cylinders have a nominal radius of 6 inches, a …
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Prebuckling and postbuckling behavior of stiffened composite panels with axial-shear stiffness coupling
… methods in composite structures, an experimental and numerical investigation of the prebuckling and postbuckling responses of flat rectangular graphite-epoxy composite panels with a centrally located I-shaped stiffener subjected to a uniform end shortening is presented. Axial-shear stiffness …
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Thermomechanical Postbuckling of Geometrically Imperfect Anisotropic Flat and Doubly Curved Sandwich Panels
Sandwich structures constitute basic components of advanced supersonic/hypersonic flight and launch vehicles. These advanced flight vehicles operate in hostile environments consisting of high temperature, moisture, and pressure fields. As a result, these structures are exposed to large lateral …