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RISCharacteristics of Self-Excited Vibration of Vertical Rotating Shaft System Considering Amplitude Dependent Nonlinearity of Sliding Bearing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Journal sliding bearings are often used to support rotating machinery to add damping and increase load capacity. These bearings have strong nonlinearities that can cause vibration problems. Various studies have been conducted ...
Nonlinear Analysis and Characteristic Variation of Self-Excited Vibration in the Vertical Rotor System Due to the Flexible Support of the Journal Bearing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Various vibration problems occur in rotating machinery. Specifically, the large amplitude vibration may occur in the vertical pump using a journal bearing. In an actual vertical pump, the stator's structure supporting the ...
Two-Way Coupling Fluid–Structure Interaction Analysis and Tests of Shaft Vibration and Clearance Flow Across Plain Annular Seal
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Shaft vibration caused by rotor dynamic (RD) fluid force generated by the seal clearance flow has caused several problems. Because such vibration is a coupled phenomenon of clearance flow and shaft vibration, a coupling ...
Numerical and Experimental Analyses of Static and Dynamic Characteristics for Partially Helically Grooved Liquid Annular Seals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerical and experimental analyses of the static and dynamic characteristics of the liquid annular seals with axially partial helical grooves were conducted to investigate the effects of the axial length gal of a helically ...
An Extended Operational Modal Analysis Method Enabling the Separation of Whirling Direction Information in Rotating Machinery (Full Operational Modal Analysis Method)
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Operational modal analysis (OMA) has recently been applied to the condition monitoring of rotating machinery. Conventional OMA is based on a one-dimensional signal. The natural modes of a rotating machinery can be classified ...