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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 ...
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, ...
Evaluating the Skill of Categorical Forecasts
Publisher: American Meteorological Society
Abstract: A generalized skill score is presented for evaluating forecasts in any number of categories. Each forecast in a sample is given a mark; the skill score for the sample is just the average mark. Each mark has an expected ...
The Southern Oscillation and New Zealand Weather
Publisher: American Meteorological Society
Abstract: Correlation coefficients between the Tahiti-Darwin Southern Oscillation Index (SOI) and pressure fields in the New Zealand area show a negative SOI to be associated with anomalous southwest flow on a yearly average basis, ...
Persistent Anomalies of the Extratropical Northern Hemisphere Wintertime Circulation: Geographical Distribution and Regional Persistence Characteristics
Publisher: American Meteorological Society
Abstract: We have studied the geographical and regional persistence characteristics of wintertime Northern Hemisphere 500 mb height anomalies, focusing particular attention on the behavior of strong anomalies that persist beyond the ...
Thermo‐Mechanical Behavior of Seafloor Sediments
Publisher: American Society of Civil Engineers
Abstract: A laboratory investigation of the thermo‐mechanical response of deep ocean sediments has been performed. The study encompasses the range of thermal loadings expected for the emplacement of a canister of radioactive waste ...
Variance–Covariance Matrix of Transformed GPS Positions: Case Study for the NAD 83 Geodetic Datum
Publisher: American Society of Civil Engineers
Abstract: This investigation introduces a rigorous mathematical transformation of variance–covariance matrices between a global geocentric frame and a plate-fixed geodetic frame. A practical example between the geocentric frame of ...
Variance–Covariance Matrix of Transformed GPS Positions: Case Study for the NAD 83 Geodetic Datum
Publisher: American Society of Civil Engineers
Abstract: This investigation introduces a rigorous mathematical transformation of variance–covariance matrices between a global geocentric frame and a plate-fixed geodetic frame. A practical example between the geocentric frame of ...
On Deflection of the Vertical Components and Their Transformations
Publisher: American Society of Civil Engineers
Abstract: The deflection of the vertical is an important parameter that combines both physical (astronomic) and geometric (geodetic) determined quantities. This paper introduces an alternative didactic approach based on rotations ...
Implementation of Inerter-Based Dynamic Vibration Absorber for Chatter Suppression
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Chatter is one of the major issues that cause undesirable effects limiting machining productivity. Passive control devices, such as tuned mass dampers (TMDs), have been widely employed to increase machining stability by ...