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RISDevelopment of a Measurement System for Analyzing Periodic External Forces Acting on Rotating Machineries
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: In this study, a measurement system is developed to analyze periodic external forces acting on a rotating machinery. The dynamics of a rotating machineries are influenced by various periodic external forces such as unbalanced ...
Track-Following Controller Design Using an Active Magnetic Bearing for Measurement of the Rotor Dynamics Coefficient of the Annular Seal
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study introduces a track-following controller design to measure the rotor dynamics (RD) coefficient of the annular seal using active magnetic bearings. The annular seal is implemented contiguously to prevent leakage ...
Vibration Control of Two-Degree-of-Freedom Structures Utilizing Sloshing in Nearly Square Tanks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates the vibration control of a towerlike structure with degrees of freedom utilizing a square or nearly square tuned liquid damper (TLD) when the structure is subjected to horizontal, harmonic excitation. ...
Formation Mechanism of Barrier Layer in the Subtropical Pacific
Publisher: American Meteorological Society
Abstract: easonal and interannual variations of the barrier layer (BL) and its formation mechanism in the subtropical North and South Pacific were investigated by using raw and gridded Argo profiling float data and various surface ...
Simulation of Ductile Fracture of Multiple Flaws
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effect of the interaction of multiple flaws on ductile fracture is studied numerically by Gurson’s constitutive equation. Based on experimental results, two parallel flaw and three parallel ...
Backlash Identification in Two-Mass Systems by Delayed Relay Feedback
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Backlash, also known as mechanical play, is a piecewise differentiable nonlinearity which exists in several actuated systems, comprising, e.g., rack-and-pinion drives, shaft couplings, toothed gears, and other machine ...
Finite Element Analysis and Experimental Validation of Transfer Function of Rotating Shaft System With Both an Open Crack and Anisotropic Support Stiffness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, transfer function of rotating shaft system for detecting transverse open crack is developed. Rotating shaft system is modeled using one-dimensional finite element method (1D-FEM), and quantitative analysis ...
Experimental Evaluation of Dynamic Characteristics of Circular Arc Spring Dampers for Rotating Machinery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study presents an experimental evaluation of the dynamic characteristics of the circular arc spring damper (CASD), which attenuates the vibration of rotating machinery. The CASD is a novel type of fluid film damper ...
Analysis of Whirling Vibration Due to Morton Effect by Using Frequency Transfer Function Model in Journal Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In recent years, rotating machinery has been required to operate at high rotational speeds for high efficiency. However, with increase in the rotational speed, the rotating machinery may become unstable. One cause of ...
Evaluation of Relationship Between Shape of a Rigid Body Unifilar Centrifugal Pendulum Vibration Absorber and Vibration Suppression Performance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The torsional vibration hinders the reduction of automobile exhaust gas emitted by using engines with a reduced number of cylinders. Centrifugal pendulum vibration absorbers (CPVA) have been used in engines to suppress ...