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RISThe Self-Excitation Damping Ratio: A Chatter Criterion for Time-Domain Milling Simulations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Regenerative chatter is known to be a key factor that limits the productivity of high speed machining. Consequently, a great deal of research has focused on developing predictive models of ...
Design of Flexure Pivot Tilting Pads Gas Bearings for High-speed Oil-Free Microturbomachinery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper introduces flexure pivot tilting pad gas bearings with pad radial compliance for high-speed oil-free microturbomachinery. The pad radial compliance was for accommodation of rotor ...
Limit Cycle Behavior of Smart Fluid Dampers Under Closed Loop Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Semiactive vibration dampers offer an attractive compromise between the simplicity and fail safety of passive devices, and the weight, cost, and complexity of fully active systems. In addition, ...
Regimes or Cycles in Tropical Cyclone Activity in the North Atlantic
Publisher: American Meteorological Society
Abstract: The important role of the correct use of statistics in the atmnospheric sciences literature is once again emphasized. Despite previous work on this topic, statistical techniques, even very simple ones, continue to be misused ...
Simulated Storm-Water Runoff Treatment by Duckweed and Algae Ponds
Publisher: American Society of Civil Engineers
Abstract: Constructed storm-water wetlands with different types of vegetation are capable of removing organics and nutrients from water while providing other important environmental and ecological services. The objectives of this ...
Effectiveness of the MCAA's Project Management Course
Publisher: American Society of Civil Engineers
Abstract: This study was conducted on current practicing construction industry employees who were volunteer students in the Mechanical Contractors Association of America's Institute for Project Management's Managing for Profit ...
Thermohydrodynamic Analysis of Compliant Flexure Pivot Tilting Pad Gas Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new thermohydrodynamic (THD) analysis for compliant flexure pivot tilting pad gas bearings is presented. Unlike many previous THD analyses on oil-lubricated bearings and gas bearings, the new ...
The Impact of Dropwindsonde Data from the THORPEX Pacific Area Regional Campaign and the NOAA Hurricane Field Program on Tropical Cyclone Forecasts in the Global Forecast System
Publisher: American Meteorological Society
Abstract: our aircraft released dropwindsondes in and around tropical cyclones in the west Pacific during The Observing System Research and Predictability Experiment (THORPEX) Pacific Area Regional Campaign (T-PARC) in 2008 and the ...
An Objective Method of Preparing Cloud Cover Forecasts
Publisher: American Meteorological Society
Abstract: The numerical 6-hourly output from the six-layer NMC PE model is used to predict the average daytime cloudiness in the spring for Boston. The variables chosen as predictors are the PE model predictions of the mean surface ...
Performance Measurements of Gas Bearings With High Damping Structures of Polymer and Bump Foil Via Electric Motor Driving Tests and One Degree-of-Freedom Shaker Dynamic Loading Tests
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents comprehensive test measurements for gas journal bearings with damping structures of a bump foil layer and/or a polymer layer. A one-pad top foil forms the bearing surface, under which the bearing structure ...