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 20 of 120 for “"dynamic stability"”.
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Dynamic stability of hydraulic poppet valves
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1963.
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The Dynamic Stability of Permanent-Magnet Step Motors
Made available in DSpace on 2014-12-12T20:55:01Z (GMT). No. of bitstreams: 1 8004255.pdf: 8658158 bytes, checksum: c2bf13aec68772fdbbf6e865d3778542 (MD5) Previous issue date: 1979
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The dynamic stability characteristics of damage-prone systems
… cannot effectively predict the behavior of a dynamic, damage-prone system. Most importantly, the rate of damage accumulation will have the greatest impact on the stability properties of the system. In fact, for certain load cases, a system that accrues more damage may be less prone to …
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Dynamic stability of shear deformable viscoelastic composite plates
… viscoelasticity theory is used to analyze the dynamic stability of composite, viscoelastic flat plates subjected to in-plane, biaxial edge loads. In deriving the associated governing equations, a hereditary constitutive law is assumed. In addition, having in view that composite-type structures …
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The Dynamic Stability of The Stratosphere and Mesosphere (Atmosphere)
… from the surface up to 80 km to investigate the stability of zonal motions in the stratosphere and mesosphere. Two sets of calculations were performed.
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Static and dynamic stability analysis of a truss model
… of this study is to investigate the static and dynamic stability of an elastic truss model. The truss model· is subjected, separately, to static loads, dynamic step loads, and dynamic impulse loads. For each loading, the results are presented in the form of stability boundaries and displacement …
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Quantifying Dynamic Stability of Musculoskeletal Systems using Lyapunov Exponents
… years to the means in which the body maintains stability and the subtleties of the neurocontroller. Variability of kinematic data has been used as a measure of stability but these analyses are not appropriate for quantifying stability of dynamic systems. Response of biological control systems …
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Dynamic stability of an elliptical pendulum with unilateral simple supports
The study of rollover stability of partially filled tanker trucks often requires the use of mechanical pendulums to substitute the sloshing dynamics of the fluid. Cylindrical tanks have been effectively characterized by simple pendulums combined with some fixed masses. Just recently, a WVU team …
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Dynamic stability, blowoff, and flame characteristics of oxy-fuel combustion
… with the nitrogen in air alters the thermodynamics, transport properties, and relative importance of chemical pathways of the reacting mixture, impacting the flame temperature and stability of the combustion process. In this thesis, methane oxy-combustion flames are studied for relevance to …
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Dynamic Stability of Uncertain Laminated Beams Subjected to Subtangential Loads
… in laminated structures on their static and dynamic responses is highly important for a reliable design of such structures. In this research, we focus on the deterministic and probabilistic stability analysis of laminated structures subject to subtangential loading, a combination of …
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Dynamic Stability Evaluation of an Automotive Turbocharger Rotor-Bearing System
… was initiated to more fully understand the dynamic stability of an automotive turbocharger rotor-bearing system using both linear and nonlinear analyses. The capabilities of a commercial Finite Element Analysis (FEA) code (computer program) were implemented in the investigation process. …
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Improved dynamic stability using FACTS devices with phasor measurement feedback
… the ability of FACTS technology to improve dynamic stability when controlled with data obtained from another recent advancement, phasor measurement units (PMUs). Based on an overview of the relative capabilities of presently available FACTS devices, a specific device will be chosen to be …
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Dynamic stability testing with a wind tunnel magnetic model suspension system
Thesis: M.S., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 1963
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Analysis of various forced oscillation techniques for obtaining dynamic stability derivatives
… subsonic wind tunnel methods for obtaining dynamic stability derivatives for aircrafts at high angle of attack are described. From the general equations of motion of an aircraft in space, the perturbation equations of motion are derived for applying to a wind tunnel aircraft model. Data …
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An evaluation of the longitudinal dynamic stability of an aircraft at stall.
The longitudinal stability of an aircraft at or near stall was examined using the digital computer as an experimental tool to solve the longitudinal equations of motion. A linear analysis determined the effect of lift curve slope variation. An investigation was made to identify the non-linear lift …
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Dynamic stability assessment of damaged passenger ships using a time simulation approach
… survivability by taking full account of vessel dynamics in realistic environments. The thesis begins by critically reviewing the development of subdivision and damage stability requirements, emphasising the inherent weaknesses in the existing approaches to assessing damage survivability. The …
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Dynamic Stability of Adobe Walls (Overturning, Shaking Table, Cracking, Rocking Model, Soil)
The object of this investigation was to study the stability of adobe walls during earthquakes. Eleven specimens were tested with an earthquake simulator to understand the influence of the following variables: (1) type of ground motion, (2) slenderness (thickness/height ratio), (3) wall thickness. …
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Dynamic stability analysis of a multi-stage axial compressor with design implications
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2003.
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A Parametric Model for Predicting Submarine Dynamic Stability in Early Stage Design
The goal of this thesis is to develop a dynamic stability and control module that can be used in the concept exploration phase of design. The purpose of the module is to determine the hydrodynamic coefficients/derivatives and stability characteristics of a given design. Two tools, GEORGE and CEBAXI …
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