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.
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Showing 1 to 13 of 13 for “"Nonlinear theories"”.
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Elastic tail propulsion at low Reynolds number
… quantitatively compared with existing linear and nonlinear theories.
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A finite strain theory, and its application to the plane stress response of polyurethane
… the gap that exists between the linear and nonlinear theories of Elasticity. The theory is applied to the solution of a hubbed, clamped, circular plate made of polyurethane whose hub is subjected to a "large" axi~symmetrioc twist. This particular problem is attacked in the conventional …
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Complexity: Theoretical and methodological applications for sociology
… complex systems. Instead anti-reductionist and nonlinear theories and methods may be much better suited for the task. The sociological relevance of Complexity---both its conceptual framework and its methodologies---is important and timely as we reach the limits of our current knowledge using …
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Numerical methods for solving nonlinear equations.
Not available
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A classical view of the quantum vacuum
… propagation in regions of strong field becomes nonlinear.This Thesis explores this regime using nonlinear vacuum electrodynamics.The nonlinear nature of the vacuum imbues a region of strong field with an effective refractive index, such that wave propagation becomes analogous to propagation in a …
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The development of nonlinear surface and internal wave groups
The development of nonlinear surface and internal wave groups is investigated. Surface wave evolution was observed in an unusually long wave channel as a function of steepness and group length. Dissipation and frequency downshifting were important characteristics of the long-time evolution. The …
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Compression failure of angle-ply laminates
… developed linear buckling and geometrically nonlinear theories were used, with modifications and enhancements, to examine the influence of layer waviness on compression response. The wavy layer is described by a wave amplitude and a wave length. Linear elastic stress-strain response is …
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EFFICIENT SOLUTION METHODS FOR NONLINEAR FINITE ELEMENT ANALYSIS (DESIGN, GEOMETRIC MATERIAL, POST-BUCKLING, STRUCTURAL, MECHANICS, NUMERICAL).
Solution algorithms are developed for the nonlinear finite element equations, resulting from the discretization of governing incremental equations of equilibrium. The equations of equilibrium in the total Lagrangian formation are derived, based on continuum mechanics principles and by invoking the …
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Formation of small-scale irregularities in the auroral E region
… derived and analyzed. Then, a review of existing nonlinear theories is given. The thrust is on the theory predictions with respect to the phase velocity of plasma waves. As an expansion of the theory, one new effect in the F-B instability evolution is considered, a secondary instability of a …
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Free and Forced Vibration of Linearly Elastic and St. Venant-Kirchhoff Plates using the Third Order Shear and Normal Deformable Theory
… free and forced vibrations of linearly and nonlinearly elastic plates with a third order shear and normal deformable theory (TSNDT) and the three dimensional (3D) elasticity theory. We used the commercial software ABAQUS for analyzing 3D deformations, and an in-house developed and verified …
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Nonlinearity and Gestalt Therapy : Back to the Beginning
… methods are explored in the context of the nonlinear view. The original Lewinian equations are updated to the current notions of nonlinear dynamics and current Gestalt Therapy theory. Ordinary differential equations and nonlinear processes are applied some of the key features of Gestalt …