Steady-state coupling vibration analysis of shaft–disk–blade system with blade crack

2021 ◽  
Author(s):  
Lai-Hao Yang ◽  
Zhu Mao ◽  
Shu-Ming Wu ◽  
Xue-Feng Chen ◽  
Ru-Qiang Yan
Keyword(s):  
Steady State ◽  
Vibration Analysis ◽  
Coupling Vibration ◽  
Blade System ◽  
Blade Crack

Beam-Vibration Analysis With the Electric-Analog Computer

1950 ◽  
Vol 17 (1) ◽  
pp. 13-26
Author(s):  
G. D. McCann ◽  
R. H. MacNeal
Keyword(s):  
Steady State ◽  
Vibration Analysis ◽  
Degrees Of Freedom ◽  
Analog Computer ◽  
Accurate Solution ◽  
Rotary Inertia ◽  
Beam Vibration ◽  
Lumped Constant ◽  
Electric Analog

Abstract The authors have developed a true dynamic analogy which has been used with the Cal Tech electric-analog computer for the rapid and accurate solution of both steady-state and transient beam problems. This analogy has been found well suited to the study of beams having several coupled degrees of freedom, including torsion, simple bending, and bending in a plane. Damping and effects such as rotary inertia may be handled readily. The analogy may also be used in the study of systems involving combined beams and “lumped-constant” elements.

scholarly journals Nonlinear Steady-State Vibration Analysis of a Beam with Breathing Cracks

2008 ◽  
Vol 2 (3) ◽  
pp. 750-761 ◽  
Author(s):  
Keisuke KAMIYA ◽  
Terumitsu YOSHINAGA
Keyword(s):  
Steady State ◽  
Vibration Analysis

Static and Dynamic Performance of an Infinite Stiffness Hydrostatic Thrust Bearing

1977 ◽  
Vol 99 (1) ◽  
pp. 106-112 ◽  
Author(s):  
N. Tully
Keyword(s):  
Steady State ◽  
Vibration Analysis ◽  
Thrust Bearing ◽  
Dynamic Performance ◽  
Cone Angle ◽  
Vibration Absorber ◽  
Static Stiffness ◽  
Load Range ◽  
Normal Diaphragm ◽  
Steady State Performance

A novel form of variable hydrostatic restriction is proposed which will automatically achieve a high, infinite or negative static stiffness over a substantial load range. The restrictor is formed between the bearing body and a spring mounted conical plug. The steady state performance is analyzed and design curves presented which are valid for any cone angle from zero, i.e., fixed clearance, to 90 deg which is the normal diaphragm restrictor. The dynamic response to forced sinusoidal vibrations is examined in conventional vibration analysis form and it is found that the restrictor system may be designed to act as a vibration absorber.

Transient and Steady State Vibration Analysis of a Wavy Thrust Bearing

2005 ◽  
Vol 128 (1) ◽  
pp. 139-145 ◽  
Author(s):  
H. Zhao ◽  
F. K. Choy ◽  
M. J. Braun
Keyword(s):  
Steady State ◽  
Vibration Analysis ◽  
Thrust Bearing ◽  
Numerical Procedure ◽  
Operating Conditions ◽  
System Stability ◽  
Thrust Bearings ◽  
External Perturbations ◽  
Vibration Signature ◽  
Transient And Steady State

This paper describes a numerical procedure for analyzing the dynamics of transient and steady state vibrations in a wavy thrust bearing. The major effects of the wavy geometry and the operating parameters on the dynamic characteristics of the bearing had been discussed in a previous paper; the present paper thus concentrates on examining the relationships between the development of the transient and steady state vibrations when operating conditions are parametrically varied. Special attention is given to the development of steady state vibrations from initial transients with comparisons and consequences to the overall system stability. Numerical based vibration signature analysis procedures are then used to identify and quantify the transient vibrations. The conclusions provide general indicators for designing wavy thrust bearings that are less susceptible to transients induced by external perturbations.

Coupling Vibration Analysis of Blood Vessels

2001 ◽  
Author(s):  
Jingliang Miao ◽  
Haixiang Liu
Keyword(s):  
Blood Flow ◽  
Blood Vessel ◽  
Blood Vessels ◽  
Dynamic Model ◽  
Natural Frequency ◽  
Vibration Analysis ◽  
Vessel Wall ◽  
Blood Vessel Wall ◽  
Coupled Vibration ◽  
Coupling Vibration

Abstract This paper proposes and analyzes a simple dynamic model of blood vessel wall. By studying the coupled vibration of blood flow and vessel wall, one can get the natural frequency of a blood vessel. The method used here is generalized calculus of variations. The results show that the flexibility of blood vessels has a greater influence on the fundamental frequency of the coupled vibration and the viscosity of blood vessel has little effect on the frequency of the coupled vibration but has a greater effect on the amplitude of the vibration. Therefore it is important to control both the viscosity and flexibility of blood vessels.

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