Browsing by Subject "Vibration"
Now showing items 1-14 of 14
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Analysis and Simulation of Mechanical Trains Driven by Variable Frequency Drive Systems
(2012-02-14)Induction motors and Variable Frequency Drives (VFDs) are widely used in industry to drive machinery trains. However, some mechanical trains driven by VFD-motor systems have encountered torsional vibration problems. This ... -
Analysis of Force Coefficients and Dynamic Pressures for Short-Length (L/D=0.2) Open-Ends Squeeze Film Dampers
(2015-12-09)Gas turbine engine manufacturers push for increasingly simpler squeeze film damper (SFD) designs that can still provide necessary damping to suppress rotor vibrations and offer stability to rotor-bearing systems. The work ... -
Analytical and experimental evaluation of the leakage and stiffness characteristics of high pressure pocket damper seals
(Texas A&M University, 2004-09-30)This thesis presents numerical predictions for the leakage and direct stiffness coefficients of pocket damper seals. Modifications made to earlier flow-prediction models are discussed. Leakage and static pressure measurements ... -
CFD Based Prediction of Rotordynamic Coefficients and Stability Analysis for Centrifugal Pump/Compressor
(2016-10-10)Fluid forces acting on the shrouded centrifugal pump/compressor impellers are evaluated using the computational fluid dynamics (CFD) approach. A face-seal impeller is selected to study for predicting the rotordynamic ... -
Comparative Analysis of the Flexural Stiffness of Pinniped Vibrissae
(PLOS, 2015-07-01)Vibrissae are important components of the mammalian tactile sensory system and are used to detect vibrotactile stimuli in the environment. Pinnipeds have the largest and most highly innervated vibrissae among mammals, and ... -
Development of Horizontal Vibration-Assisted Pulsed Electrochemical Machining System
(2018-06-01)This research aims to understand flushing of byproducts between the anodic workpiece and the cathodic electrode in the electrochemical machining (ECM) process. The ion transport mechanism between the inter-electrode gaps ... -
Development of Horizontal Vibration-Assisted Pulsed Electrochemical Machining System
(2018-06-01)This research aims to understand flushing of byproducts between the anodic workpiece and the cathodic electrode in the electrochemical machining (ECM) process. The ion transport mechanism between the inter-electrode gaps ... -
Diagnostics of subsynchronous vibrations in rotating machinery - methodologies to identify potential instability
(Texas A&M University, 2005-11-01)Rotordynamic instability can be disastrous for the operation of high speed turbomachinery in the industry. Most ??instabilities?? are due to de-stabilizing cross coupled forces from variable fluid dynamic pressure around ... -
Downhole Wireline Mechatronics and Drillstring Vibration Dynamics
(2014-08-05)The work is divided into two parts: The First part discusses and documents simulation investigations on the interactive effect of the different conveyance accessories tools and their designs on the wireline cable tension ... -
Passively Actuated Vibration to Decrease Membrane Fouling Rate for Centrifugal Reverse Osmosis
(2018-08-01)A novel method of shaking a CRO membrane was designed. This method, called the Plug and Pipe method, was simulated to determine how well it would work in a full CRO system. This was done by a series of simulations. First, ... -
Structural design and analysis of a lightweight composite sandwich space radiator panel
(Texas A&M University, 2005-02-17)The goal of this study is to design and analyze a sandwich composite panel with lightweight graphite foam core and carbon epoxy face sheets that can function as a radiator for the given payload in a satellite. This arrangement ... -
Three Phase Erosion Testing and Vibration Analysis of an Electrical Submersible Pump
(2014-01-13)Electrical Submersible Pump (ESP) has been recognized as an excellent artificial lifting method in industry due to its high liquid flow rate in both onshore and offshore applications. As oil exploration goes deep into ... -
Vibration sensors utilizing fiber fabry-perot interferometers and permanent magnets
(2009-05-15)A unique set of vibration sensors was designed that incorporate the fiber Fabry-Perot interferometer (FFPI) and permanent magnets. Feasibility of the design and its advantages over traditional sensors were verified by ... -
A Vibration Study of the Commissary Building at TAMU
(2016-04-26)IT Infrastructure & Operations, part of the Computing & Information Services at Texas A&M University, requested a vibration study of the Dollar Food Services Commissary . This report has the following sections, Chapter 2, ...