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 15 of 15 for “"inertia effects"”.
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An axisymmetric cubic finite element for laminated anisotropic cylindrical shells
… for transverse shear deformation and rotary inertia effects. Unlike conventional shell elements, this new element allows separate rotational degrees of freedom for each layer (hence giving more flexibility than models based on classical lamination theory) but does not require translational …
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Effects of shear deformations on the vibrational frequencies of wide-flanged structures
… include transverse shear deformation and rotary inertia effects) are extended for a wide-flanged structure to include the additional shear lag deformation of the flanges; thus, cross-sections of the beam are allowed to distort instead of remaining plane sections. The effect of relative flange …
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Performance Enhancement and Stability Robustness of Wing/Store Flutter Suppression System
… store, thus isolating the wing from store pitch inertia effects. Advanced control techniques are used to assess the nominal performance and robustness of wing/store system to flutter critical uncertainties. NOTE: (10/2009) An updated copy of this ETD was added after there were patron reports of …
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Nonlinear dynamic model and simulation of a high pressure monotube shock absorber using the bond graph method
… Various phenomena are modelled such as fluid inertia effects, laminar orifice flow, air entrained in the hydraulic fluid, and cavitation. Simulation results demonstrate good model accuracy when compared t.o test data for similar hydraulic dampers. Parametric studies involving various elements …
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A Finite Difference Approach to Modeling High Velocity/Variable Loads using the Timoshenko Beam Model
… that the combination of velocity transition effects, electromagnetic loading, and other non-linear or design specific effects contribute to areas of high stresses/strains over the length of the rail/beam during launch. This paper outlines the use of the Timoshenko beam model, a model which …
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COMPLEX FREQUENCY ANALYSIS OF DAMPED THIN-WALLED BEAMS WITH OPEN CROSS SECTIONS (COUPLED, VIBRATION)
… shell curvature, secondary warping, and rotary inertia effects are included in the derivation.</p><p>The equilibrium equations have been referred to principal coordinates in order to reduce the coupling between the different displacement components. The principal coordinates and the associated …
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Experimental Identification of Nonlinear Systems
… by a single mode. The model accounts for cubic inertia and stiffness nonlinearities and quadratic damping. The method of multiple scales is used to determine the frequency-response function for the system. Experimental frequency- and amplitude-sweep data are compared with the prediction of the …
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Origami-inspired mechanical metamaterials
… analytically. Material strain rate sensitivity, inertia effects, and dynamic deformation mechanisms under varying loading rates are investigated. The results show that disrupting flat-foldability can lead to enhanced dynamic compressive strength of the heterogeneous geometries compared to their …
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Acoustic and Thermal Properties of Recycled Porous Media
… incident sound waves through viscous friction, inertia effects and thermal energy exchanges. The materials developed are also able to insulate against heat by suppressing the convection of heat and reduced conductivity of the fluid locked in the large proportion of close-cell pores. The acoustic …
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Analysis of Lossless-Adjustable One-Ports: Experimental Testing, Modelling and Optimal Control
… varspring is modified to include friction and inertia effects. The torque, instantaneous power and energy are compared between the proposed device model and experimental data with close correlation between the two being achieved.
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Analysis of Instabilities in Microelectromechanical Systems, and of Local Water Slamming
… with and without the consideration of mechanical inertia effects are quite different. A phase diagram between a critical load parameter and the arch height is constructed to delineate different regions of instabilities. The local water slamming refers to the impact of a part of a ship hull on …
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On the behavior of viscoelastic plates in bending
… The term quasi-static ls used to indicate that Inertia forces due to deformation are neglected. These are included, of course, in the dynamic analysis. Solutions of the quasi-static equation are compared with experimental results obtained by measuring the deflection of a test plate made of …
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On the application of numerical continuation to large-scale dynamical systems
… the longitudinal and transverse directions where inertia effects are taken into account. The numerical results corresponding to the free vibrations are compared to a perturbation analysis obtained using the multiple-scales method to show the validity of the numerical scheme. The developed …
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Behavior and performance of steel moment-framed buildings subject to dynamic column loss scenarios
… masses were used to capture realistic inertial effects. The models were then analyzed using the Abaqus/Explicit finite element analysis engine to simulate instantaneous structural loss of a single ground-level column. This analysis was carried out for twelve individual columns in the …