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Accuracy and Reliability of Piecewise Constant Method in Studying the Responses of Nonlinear Dynamic Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Accuracy and reliability of the numerical simulations for nonlinear dynamical systems are investigated with fourthorder Runge–Kutta method and a newly developed piecewiseconstant (PT) method. Nonlinear dynamic systems ...
Influence of Vegetation on Turbulence Characteristics and Reynolds Shear Stress in Partly Vegetated Channel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: From the perspective of vegetation density, this research studies the influence of vegetation on turbulence characteristics and Reynolds shear stress in partly vegetated channel via a series of experiments. Natural reed ...
Torsional Vibrations and Nonlinear Dynamic Characteristics of Drill Strings and Stick-Slip Reduction Mechanism
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Torsional stick–slip vibrations easily occur when the drill bit encounters a hard or a hard-soft staggered formation during drilling process. Moreover, serious stick–slip vibrations of the drill string is the main factor ...