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Showing 1 to 20 of 24 for “"Classical Lamination Theory"”.
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An axisymmetric cubic finite element for laminated anisotropic cylindrical shells
… giving more flexibility than models based on classical lamination theory) but does not require translational degrees of freedom beyond those necessary for a single layer. Continuity of displacements between layers is assumed but not continuity of the traction vectors.
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Linear and nonlinear analyses of thick composite circular plates using the finite element method
… plates based on Mindlin's shear-deformable plate theory is developed. Unlike conventional plate elements, these new elements may be stacked on top of one another to model laminated plates. The elements assure continuity of the displacements between the layers, but not continuity of the traction …
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Dimensional Stability of Multilayer Circuit Boards
… fabric style). A numerical procedure based on classical lamination theory with non-isothermal viscoelastic constitutive relations is developed to predict the deformation and residual stress state due to relamination. Experimental values of the substrate stress relaxation modulus and …
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Thermoelastic control of adaptive composites for aerospace applications using embedded nitinol actuators
… and related to embedded volume fraction. Classical lamination theory is used to formulate a two-dimensional model which included the adaptive properties of the embedded nitinol. The model was used to predict the increased modulus and reduction of thermal strain in the modified plates which …
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Development of lightweight FRP bridge deck designs and evaluations
… of stiffness was made via approximate classical lamination theory, and maximum transverse load distribution factors were predicted. In addition, several failure modes were identified and theoretically correlated to obtain applicable limit states based on the strain to failure approach. …
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Analytical Modeling and Equivalent Electromechanical Loading Techniques for Adaptive Laminated Piezoelectric Structures
… and plates. Techniques are derived based on classical beam and plate theory, classical lamination theory, and the linear theory of piezoelectricity. Finite element approximations are used with the principle of minimum potential energy to derive the static equilibrium equations for …
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Edge caps for reinforcing composite laminates
… loads are much lower than those predicted using classical lamination theory stresses and a 2-D failure criterion. Possible applications of the free edge reinforcement concept are given. Suggestions for future research are made.
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An investigation into the behaviour of various sized fibre reinforced plastic beams
… results and theoretical predictions from classical lamination theory, higher order displacement theory, and finite element analysis were conducted and discussed. The influence of the material quality (voidage) of bi-directional stitched glass fibre reinforced composite beam on beam …
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Stress rupture of unidirectional polymer matrix composites in bending at elevated temperatures
… using the large deflection of buckled bars theory (elastica) and it is possible to predict with good accuracy the strain at each point of the specimen if the end-to-end distance is known. The failure process has been experimentally characterized. The formation and propagation of microbuckles …
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Active dynamic response tuning of adaptive composites utilizing embedded nitinol actuators
… by factors of 1.7, 2.5, and 3.0 respectively. Classical lamination theory is used to formulate a mathematical model of the dynamic response which includes the adaptive properties of the embedded nitinol fibers as a function of temperature, as well as the thermal aspects of the matrix material. …
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Tensile behavior of unidirectional and cross-ply ceramic matrix composites
… ply data of the composite was calculated using Classical Lamination Theory (CLT). The predicted behavior of the 0° ply was then compared to actual data supplied by McDonnell Douglas Corporation. While the Blackglas™ material showed good correlation, the GCMC did not. Analysis indicates that the …
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Modeling the behavior of wood-based composite sheathing under hygrothermal load
… based on the constitutive relationship of the Classical Lamination Theory and the thermal stress analogy in composites. As an alternative solution, the applicability of the eccentrically loaded column formula was evaluated. The developed models were experimentally validated for OSB and plywood …
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Theoretical study on toughening and design against fracture of functionally graded thermal barrier coatings
… aim is to develop a general micromechanical theory of the stress-induced transformation toughening of multi-phase composites and the second aim is to develop a theoretical model for FG TBCs toughened by transformable particles, which can be used in the design and fabrication of FG TBCs for …
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A Systematic Stiffness-Temperature Model for Polymers and Applications to the Prediction of Composite Behavior
… is observed. Finally, the model is used in the Classical Lamination Theory; some laminates were found to exhibit stress reversals with temperature and behaved like thermally activated mechanical switches.
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Scale Modeling of Tests with Combined Thermo-Structural Loading
… cross-sectional area models incorporating classical lamination theory were used to predict the mechanical response of the composite samples as the char front increased.
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Compression Creep Rupture of an E-glass/Vinyl Ester Composite Subjected to Combined Mechanical and Fire Loading Conditions
… of a laminated panel ([0/+45/90/-45/0]S) using classical lamination theory (CLT). Three manuscripts constitute this dissertation which is representative of the three steps listed above. First, a detailed characterization of the nonlinear thermoviscoelastic response of Vetrotex 324/Derakane 510A …
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Accelerated viscoelastic characterization of T300/5208 graphite- epoxy laminates
… of unidirectional specimens is modeled using the theory developed by Schapery. The transient component of the viscoelastic creep compliance is assumed to follow a power law approximation. A recursive relationship is developed, based upon the Schapery single-integral equation, which allows …
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Thermomechanical Response of Shape Memory Alloy Hybrid Composites
… This constitutive model is used along with classical lamination theory and the FE method to formulate the equations of motion for panel-type structures subjected to steady-state thermal and dynamic mechanical loads. Mechanical loads that are considered include acoustic pressure, inertial …
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Natural Kenaf Fiber Reinforced Composites as Engineered Structural Materials
… facesheets, leading to premature core shear or delamination failures in both flexure and compressive testing.;The NFRPs were found to match well with the theoretical stiffness prediction methods of classical lamination theory, finite element method, and Castigliano's method in unidirectional …
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Random vibrations of composite beams and plates
… warping in the third-order shear deformation theory. In the analysis of plates also two configurations of the laminates have been considered: symmetric cross-ply and antisymmetric angle-ply. At this time, these are the only two configurations which can be solved by the closed-form modal …
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