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 71 for “"fluid filled"”.
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Waves in fluid filled elastic tubes.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1966. Ph.D.
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Pulse Propagation in Fluid-Filled Elastic Curved Tubes
The propagation of fluid transients through elbows in pipes is an important consideration in the safety analysis of nuclear piping systems. In this study, one-dimensional governing equations for the propagation of pressure pulses in an inviscid compressible fluid contained in a thin-walled …
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Acoustic transmission through fluid-filled pipes in boreholes
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1991, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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Hydroelastic stability and wave propagation in fluid-filled channels
… stability and propagation of waves in various fluid-filled elastic-walled channels. In Chapter 2 a linear temporal stability analysis is performed for various channel wall configurations, the results of which are compared to determine how different physical effects contribute to the stability. …
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Hydroelastic stability and wave propagation in fluid-filled channels
… stability and propagation of waves in various fluid-filled elastic-walled channels. In Chapter 2 a linear temporal stability analysis is performed for various channel wall configurations, the results of which are compared to determine how different physical effects contribute to the stability. …
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Shock wave interaction with a fluid filled cylinder experimental methods
… to understand how the shockwave interacts with a fluid-filled cylinder of different thicknesses. Here, the cylinder is idealized as head and the fluid filled inside it as the brain material. The primary interest here is, how the pure shockwave behaves when a cylinder is exposed to different …
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A ray model for head waves in a fluid-filled borehole
… from a point source on the axis of an ideal fluid-filled borehole. An impulse response is derived, and its frequency characteristics are investigated. The waves are compared to those obtained by the real axis integration method of Tsang and Rader, which results in a complete waveform, …
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High-rate deformation behavior and applications of fluid filled reticulated foams
… In this thesis a 'novel' energy absorbing fluid-composite that utilized a shear thickening fluid is developed. Shear-thickening fluids are a class of field responsive fluids that have the ability to transition from a low viscosity state to a high viscosity state under an imposed deformation …
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Linear and nonlinear elastic wave propagation in a fluid-filled borehole
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1993.
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The radiation and vibration of drilling tubulars in fluid-filled boreholes
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1996.
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Analytical and Numerical Approaches on the Stiffness of Magnetorheological Fluid Filled Spring
… This thesis studies a mechanical spring filled with magnetorheological (MR) fluid to achieve controllable stiffness. The hollow spring filled with MR fluid is subjected to a controlled magnetic field in order to change the viscosity of the MR fluid and thereby to change the overall …
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Modulation of non-linear wave in a fluid-filled thick elastic tube
… considering blood as an incompressible inviscid fluid or incompressible viscous fluid, two mathematical models of non-linear wave modulation in a thick elastic tube were developed. The modulation of the non-linear wave in the long wave approximation was investigated using the reductive …
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Static and Dynamic Optimisation of Fluid-Filled Lattices for Responsive Orthotic Insoles
… a study on the static and dynamic performance of fluid-filled lattice structures for use in responsive orthotic insoles. The central aim is to explore fluid-filled lattices as a means of enhancing comfort and reducing peak plantar pressures under both static and dynamic loading conditions. The …
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Active control of coupled wave propagation in fluid-filled elastic cylindrical shells
The vibrational energy propagating in straight fluid-filled elastic pipes is carried by the structure as well as by the internal fluid. Part of the energy in the system may also transfer from one medium to the other as propagation occurs. For various types of harmonic disturbance, this study …
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On axially symmetric elastic wave propagation in a fluid-filled cylindrical shell
… axially symmetric elastic wave propagation in a fluid-filled cylindrical shell. Many of the objectionable features of the elementary (Joukowsky) water hammer theory are removed, and particular emphasis is placed upon consideration of the effects of radial inertia of the fluid and of the shell. …
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Fabrication and osmosis-mediated dynamics of a plant-inspired, fluid-filled, soft actuator
… solids where closed cells encapsulate the fluid. The fluid can diffuse through the semi-permeable cell walls, thereby changing the cell volume, stretching the cell wall, and consequently changing the hydrostatic pressure in the cells. The presence of this hydrostatic pressure, also known as …
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Fluid-filled helmet liner concept for protection against blast-induced traumatic brain injury
… addition of channels within foam that contain fluid or fluid-like materials. To support this goal, this thesis explores the response of these filler materials in a 2D sandwich structure at a range of pressures believed to be in the range of the occurrence of mild TBI, the most common TBI …
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Characterization of shear-thickening fluid-filled foam systems for use in energy absorption devices
… One approach to this issue is the use of fluid-filled elastomeric foams. In the present thesis, the fluid within these foams is a non-Newtonian shear-thickening fluid composed of 300 nm silica particles suspended in a solvent, ethylene glycol, at high concentrations, 45-55 %. The field of …
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Modeling of elastic wave propagation in a fluid-filled borehole excited by a piezoelectric transducer.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1991.
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Active/Passive control of fluid-borne and structure-borne disturbances in fluid-filled piping systems
Energy due to fluid-borne and structure-borne disturbances propagating in a fluid-filled pipe will be carried by the structure and the fluid. Energy transfer may occur between these two media due to the coupling between the structure and the fluid. It's not clear when the excitation is fluid-borne …
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