Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 48 for “"Postbuckling"”.
-
Postbuckling behavior of rectangular plates
… is the simplicity of solution. The elastic postbuckling behavior of simply supported rectangular plates subjected to longitudinal compression and subjected to a unIform temperature rise is investigated in detail by solving the first few of the equations. Results are presented for these …
-
Postbuckling failure of composite plates with central holes
The postbuckling failure of square composite plates with central holes is analyzed numerically and experimentally. The particular plates studied have stacking sequences of [± 45/0/90]₂₅, [± 45/02]₂₅, [± 45/06]₅. and [± 45]₄₅. A simple plate geometry, one with a hole diameter to plate width ratio of …
-
Buckling, Flutter, and Postbuckling Optimization of Composite Structures
… design has a straight edge boundary condition. A postbuckling analysis module is developed for such panels with applied edge displacements. A parametric study of the effects of flexural and inplane stiffnesses on the design of composite laminates for optimal postbuckling performance is done. The …
-
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 …
-
Thermal buckling and postbuckling of symmetrically laminated composite plates
… change along the length of the plate. Postbuckling in the presence of a uniform temperature change and nonlinear response to imperfections in the form of a thermal gradient through the thickness of the plate and a lack of initial flatness are also studied. The buckling response is …
-
Delamination buckling, postbuckling, and growth in axially loaded beam-plates
… 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 load and …
-
Postbuckling Analysis of Delaminated Composite Plates Under Compression (Composite Laminates)
… modes in general may include prebuckling, postbuckling, delamination growth and final failure. Buckling load is determined by solving an eigenvalue problem using a subspace iteration technique. The Riks-Wempner iterative scheme is then used to determine the associated postbuckling …
-
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 …
-
Prebuckling, Buckling, and Postbuckling Response of Segmented Circular Composite Cylinders
… for the nonlinear prebuckling, buckling, and postbuckling responses are compared to experimental results. Focus is directed at the investigation of two specific cylinder configurations, referred to as axially-stiff and circumferentially-stiff cylinders. Small-scale cylinders, each having a …
-
Buckling and postbuckling behavior of laminated composite plates with ply dropoffs
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1986.
-
Minimum-weight design of compressively loaded stiffened panels for postbuckling response
… designed for specified loads using NLPANOPT for postbuckling response and PASCO for buckling-critical response. Comparisons of panel weight and imperfection sensitivity between the NLPANOPT designs and PASCO designs are presented. In general, the designs obtained with NLPANOPT are lighter and …
-
Buckling and postbuckling behavior of unbalanced and unsymmetric laminated graphite/epoxy plates
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1986.
-
Buckling and postbuckling behavior of prolate spheroidal shells under uniform external pressure
… 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 state can be …
-
Thermomechanical Postbuckling of Geometrically Imperfect Anisotropic Flat and Doubly Curved Sandwich Panels
… results are presented encompassing buckling, postbuckling, and stress/strain analysis in conjunction with the application of the structural tailoring technique. The great effects of this technique are explored. Moreover, comparisons with the available theoretical and experimental results are …
-
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
-
Scale effects in buckling, postbuckling and crippling of graphite-epoxy Z-section stiffeners
… are prebuckling, initial local buckling, postbuckling and crippling. A mechanistic approach to scaling has been used, in which the scalability of the responses has been judged relative to governing mechanics models. A linked-plate analytical model has been obtained which predicts the …
-
Prebuckling and postbuckling behavior of stiffened composite panels with axial-shear stiffness coupling
… 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 coupling is introduced by rotating the stiffener and/or …
-
Minimum-weight design of symmetrically laminated composite plates for postbuckling performance under in-plane compression loads
A postbuckling analysis procedure for simply-supported, symmetrically laminated, rectangular, generally orthotropic plates under uniaxial compression based on a Marguerre-type energy method was developed. The analysis assumes the out-of-plane displacement to be represented by using a truncated …
Page 1 of 3