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.
Results
Showing 1 to 20 of 412 for “"Hydrostatic"”.
-
Hydrostatic machine tool spindles
This work investigates the application of hydrostatic bearings, particularly those of the self-compensating type, to precision machine tool spindles. First, relations are developed that can be used to calculate the hydraulic resistances of various bearing land flows in tilted and untilted …
-
Design of linear hydrostatic bearings
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
-
Surface self-compensated hydrostatic bearings
… been known in the machine tool industry that hydrostatic bearing technology has several unique advantages over rolling element bearings. The thin fluid film between the bearing pads and the rail provides virtually infinite motion resolution due to lack of static friction, very low straightness …
-
Design of a low cost hydrostatic bearing
… method for a new surface self compensating hydrostatic bearing. A lumped resistance model was used to analyze the performance of the bearing and provide guidance on laying out the bearing features. One arrangement of bearing features was cut into a flat sheet of ultra high molecular weight …
-
Designing a high-efficiency hydrostatic bicycle transmission
Hydrostatic bicycle drives use a working fluid instead of the common roller-chain to transmit power to the drive wheel. These transmissions are typically considered too inefficient for human power applications. An experiment consisting of a very simple hydrostatic drive was designed and built in an …
-
Incompressible journal bearings with combined hydrostatic-hydrodynamic action.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1965. Ph.D.
-
Towards Coupled Nonhydrostatic-Hydrostatic Hybridizable Discontinuous Galerkin Method
… Many regional ocean models resort to a hydrostatic (HS) approximation that significantly reduces the computational burden. However, a challenge is to capture and study local ocean phenomena involving complex dynamics over a broader range of scales, from regional to small scales, and …
-
Feasibility study of hydrostatic transmissions for automobile applications
… improved fuel efficiency by incorporating a hydrostatic transmission was investigated. The proposed transmission was composed of positive-displacement axial-piston hydraulic devices. The displacement of the pump and motor units could be varied to allow the prime mover to operate within its …
-
Hydrostatic and intact stability analysis for a surface ship
… has a continuous second derivative of position. Hydrostatics lies at the heart of naval architecture. The hydrostatic properties of a hull are determined by the lines and their interpretation using rules of integration. The resulting analysis is presented in the form of graphs, termed the "curves …
-
MITIGATION OF GEAR MESH-FREQUENCY VIBRATIONS UTILIZING A HYDROSTATIC BEARING
… flow can be disrupted, for example using a hydrostatic bearing as a low pass filter of vibrations while still preserving the positioning accuracy of the gear drive.</p><p>Hydrostatic bearings are a class of fluid bearings consisting of externally pressurized fluid trapped in a recess to …
-
Non-Hydrostatic Models For Wave Propagation, Breaking, And Run-Up
This dissertation develops a series of non-hydrostatic pressure wave models based on the finite element free surface flow model, CCHE2D, for simulating propagation, breaking, and run-up of coastal wave processes. The first non-hydrostatic formulation presented in this dissertation directly …
-
Design and manufacturing of modular self-compensating hydrostatic journal bearings
In order to carry a load, a multi recess hydrostatic bearing supplied with a single pressure source requires compensation devices. These devices are also known as restricters and they allow the recess pressures to differ from each other. These devices, when properly selected and tuned, can deliver …
-
Design, dynamic modeling, simulation and feedback control of hydrostatic bearing
A hydrostatic bearing carriage (Hydrocline) that uses an open face linear motor to drive the carriage as well as to preload the hydrostatic bearings has been developed by Professor Alexander Slocum and Gerald Rothenhöfer of the Massachusetts Institute of Technology's Mechanical Engineering …
-
Hydrostatic radial bearings for high speed precision machine tool applications
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
-
An expert system for preliminary selection of hydrostatic transmission components
… and sizing of the components for the design of a hydrostatic transmission is a tedious process. Necessary procedures include: analyzing the load profile, choosing a suitable configuration, determining the required size of components, selecting components, evaluating the performance of selected …
-
Impact of high hydrostatic pressure on wheat, tapioca, and potato starches
Der Einfluss von hohem hydrostatischem Druck auf Weizen-, Tapioka- und Kartoffelstärke bei verschiedenen Drücken, Temperaturen und Behandlungszeiten wurden untersucht. Der Verkleisterungsgrad, die elektrische Leitfähigkeit und die Wasserbindekapazität der Stärkesuspensionen erhöhten sich mit …
-
Numerical analysis of elastic membrane structures subjected to hydrostatic pressure loading
… or totally subjected to pressure loading of the hydrostatic type. The possibility of wrinkling is accounted for by employing a Relaxed Strain Energy Density. The numerical procedure is based on the Dynamic Relaxation Method. This is an explicit, iterative technique in which the static solution is …
-
Understanding Protein -Nucleic Acid Recognition: Probing With Osmotic and Hydrostatic Pressure
This work demonstrates the usefulness of combining high pressure techniques with theoretical calculations. Through the use and development of high pressure methods, a better understanding of the factors involved in site-specific recognition in protein-nucleic acid systems was achieved.
-
Effects of stiffness gradient and hydrostatic pressure on cell migratory behaviors
… vivo environment. Then we look at the effect of hydrostatic pressure using a non-contact pressure chamber that provides a uniform pressure environment while maintaining physiological conditions needed for cell growth. By seeking to better understand the migratory responses of cells to various …
Page 1 of 21