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Showing 1 to 20 of 112 for “"Laminated Composite"”.
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Secondary Buckling of Laminated Composite Plates
The postbuckling load carrying capacity of composite plates offers immense potential to their applications for loads exceeding their primary buckling load. However, such an efficient and economical usage of these plates can be reliable only if the nonlinear postbuckling behavior of these plates, …
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Thermoelastic stress analysis of laminated composite materials
… data from a variety of multi-directional laminated composites. In order to interpret the thermoelastic signal correctly the source of the thermoelastic response has been investigated in detail. In this thesis four possible routines to extract quantitative stress/strain information from …
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Modeling impact damage in laminated composite plates
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2003.
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Progressive failure analysis of laminated composite structures
… analysis is presented that is applicable to thin composite structures undergoing large deformations. The method is based on a nonlinear shell theory that accounts for geometric and material nonlinearities. An isoparametric, displacement-based finite element formulation is used to discretize the …
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Lamb wave propagation in laminated composite plates
Low frequency Lamb waves in composite laminates were investigated theoretically and experimentally. To have a general solution for Lamb wave propagation in multilayered composite laminates is not practical due to a large number of boundary conditions needed to be satisfied at the interlaminar …
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Progressive Failure Analysis of Laminated Composite Structures
Laminated composite structures have started to play a very significant role in today's aircraft industry. The application of composite materials has now gone beyond the borders of aircraft design and has entered into such fields as automotive, athletics and recreational equipment, etc. The light …
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Stress distribution around holes in laminated composite plates
… for the stress distribution around holes in laminated composite plates under pure bending. The shear deformation, lamination theory is derived and employed for the analysis of circular, elliptical, square, and diamond-shaped holes piercing the laminated composite plate. Each layer of the …
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Nonlinear Forced Vibration of an Unsymmetrically Laminated Composite Beam
… nonlinear forced vibration of an unsymmetrically laminated composite beam. Two cases are considered: unsymmetrical angle-ply and unsymmetrical cross-ply composite beams. The nonlinear governing partial differential equations of motion are obtained by taking into account the von-Karman geometrical …
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Thermal buckling and postbuckling of symmetrically laminated composite plates
… 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 of a uniform temperature change and a …
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Deformations of In-plane Loaded Unsymmetrically Laminated Composite Plates
… nonlinear problems, particularly for composite materials and particularly when instabilities and dynamic behavior are involved. Familiarity with the problem, in general, and with the use of ABAQUS, in particular, is partially gained by considering semi-infinite unsymmetrically …
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Higher order laminated composite plate analysis by hybrid finite element method
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Buckling and postbuckling behavior of laminated composite plates with ply dropoffs
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1986.
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Compression of thick laminated composite beams with initial impact-like damage
While the study of compression after impact of laminated composites has been under consideration for many years. the complexity of the damage initiated by low velocity impact has not lent itself to simple predictive models for compression strength. The damage modes due to non-penetrating. low …
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Geometric and material nonlinear analysis of laminated composite plates and shells
An inelastic material model for laminated composite plates and shells is formulated and incorporated into a finite element model that accounts for both geometric nonlinearity and transverse shear stresses. The elasto-plastic material behavior is incorporated using the flow theory of plasticity. In …
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Buckling response of symmetrically laminated composite plates having a trapezoidal planform area
… work is the buckling response of symmetrically laminated composite plates having a planform area in the shape of an isosceles trapezoid. The loading is assumed to be inplane and applied perpendicular to the parallel ends of the plate. The tapered edges of the plate are assumed to have simply …
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Smart passive adaptive control of laminated composite plates (through optimisation of fibre orientation)
In the classical laminate plate theory for composite materials, it is assumed that the laminate is thin compared to its lateral dimensions and straight lines normal to the middle surface remain straight and normal to the surface after deformation. As a result, the induced twist which is due to the …
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Linear analysis of laminated composite plates using a higher-order shear deformation theory
… shear deformation theory is used to analyze laminated anisotropic composite plates for deflections, stresses, natural frequencies, and buckling loads. The theory accounts for parabolic distribution of the transverse shear stresses, satisfies the stress-free boundary conditions on the top and …
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Nonlinear analysis of laminated composite shells using a micromechanics-based progressive damage model
… model for progressive failure analysis of laminated composite shell structures has been developed and implemented. The model couples a finite element model for nonlinear analysis of laminated shells with a micro mechanics elasticity solution for predicting failure and effective composite …
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Comparison of theory and experiment for flexural-torsional buckling of laminated composite columns
… elements. The theory was recently extended to laminated bars fabricated from advanced composite materials. The purpose of this research is to provide a study and assessment of the extended theory. The focus is on flexural and torsional-flexural buckling of thin-walled, open section, laminated …
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