scholarly journals Dynamic analysis of rotating flexible disk subjected to double slider loading systems

2012 ◽  
Vol 2 (6) ◽  
pp. 063004
Author(s):  
Yongchen Pei ◽  
Xin Yang
Keyword(s):  
Dynamic Analysis ◽  
Rotating Flexible Disk ◽  
Flexible Disk

Vibrational response of a moving suspension-slider loading system exciting a rotating flexible disk

2012 ◽  
Vol 331 (16) ◽  
pp. 3762-3773 ◽  
Author(s):  
Yong-Chen Pei ◽  
Qing-Chang Tan ◽  
Xin Yang ◽  
Chris Chatwin
Keyword(s):  
Vibrational Response ◽  
Loading System ◽  
Rotating Flexible Disk ◽  
Flexible Disk

Axisymmetric Solution of a Flexible Disk Rotating Near a Rigid Surface

1988 ◽  
Vol 110 (4) ◽  
pp. 674-677 ◽  
Author(s):  
M. Carpino ◽  
G. A. Domoto
Keyword(s):  
Plane Stress ◽  
Asymptotic Expansions ◽  
Reynolds Equation ◽  
Flat Surface ◽  
Inertial Effects ◽  
Rigid Surface ◽  
Axisymmetric Solution ◽  
Spinning Disk ◽  
Rotating Flexible Disk ◽  
Flexible Disk

A rotating flexible disk separated from a rigid flat surface by a gas film is addressed. The gas film between the disk and the plate is represented by an incompressible Reynolds equation. Inertial effects are included. The disk is treated as a membrane where the tension is found from the plane stress solution for a spinning disk. Two different methods for the axisymmetric solution of this system are developed. The first uses the method of matched asymptotic expansions. The second method is a mixed numerical/perturbation procedure.

A Study of the Influence of Bearing Clearance on Lateral Coupled Shaft/Disk Rotordynamics

1992 ◽  
Author(s):  
George T. Flowers ◽  
Fang Sheng Wu
Keyword(s):  
Dynamical Behavior ◽  
High Amplitude ◽  
Bladed Disk ◽  
Bearing Clearance ◽  
Shaft System ◽  
Coupling Dynamics ◽  
Bearing Loads ◽  
Rotating Flexible Disk ◽  
Flexible Disk ◽  
Clearance Nonlinearity

This study examines the influence of bearing clearance on the dynamical behavior of a rotating, flexible disk/shaft system. Most previous work in nonlinear rotordynamics has tended to concentrate separately on shaft vibration or on bladed disk vibration, neglecting the coupling dynamics between them. The current work examines the important rotordynamical behavior of coupled disk/shaft dynamics. A simplified nonlinear model is developed for lateral vibration of a rotor system with a bearing clearance nonlinearity. The steady-state dynamical behavior of this system is explored using numerical simulation and limit cycle analysis. It is demonstrated that bearing clearance effects can produce superharmonic vibration that may serve to excite high amplitude disk vibration. Such vibration could lead to significantly increased bearing loads and catastrophic failure of blades and disks. In addition, multi-valued responses and aperiodic behavior was observed.

Dynamic stability of rotating flexible disk perturbed by the reciprocating angular movement of suspension–slider system

2010 ◽  
Vol 329 (26) ◽  
pp. 5520-5531 ◽  
Author(s):  
Yong-Chen Pei ◽  
Qing-Chang Tan ◽  
Fu-Sheng Zheng ◽  
Yong-Qi Zhang
Keyword(s):  
Dynamic Stability ◽  
Angular Movement ◽  
Rotating Flexible Disk ◽  
Flexible Disk

Rotating flexible disk under shaft temperature increment

2010 ◽  
Vol 329 (17) ◽  
pp. 3550-3564 ◽  
Author(s):  
Yong-Chen Pei ◽  
Ling He ◽  
Ji-Xin Wang
Keyword(s):  
Temperature Increment ◽  
Rotating Flexible Disk ◽  
Flexible Disk

scholarly journals Whirl Analysis of an Overhung Disk Shaft System Mounted on Non-rigid Bearings

2021 ◽  
Author(s):  
Sanjib Chowdhury ◽  
Yashodhan V. Joshi
Keyword(s):  
Natural Frequencies ◽  
Coordinate Systems ◽  
Periodic Force ◽  
Campbell Diagram ◽  
Shaft System ◽  
Rotating Flexible Disk ◽  
Flexible Disk ◽  
Multi Body ◽  
Rotational Direction ◽  
Body Dynamic

Abstract Eigenvalues of a simple rotating flexible disk-shaft system are obtained using different methods. The shaft is supported radially by non-rigid bearings, while the disk is situated at one end of the shaft. Eigenvalues from a finite element and a multi-body dynamic tool are compared against an established analytical formulation. The Campbell diagram based on natural frequencies obtained from the tools differ from the analytical values because of oversimplification in the analytical model. Later, detailed whirl analysis is performed using AVL Excite multi-body tool that includes understanding forward and reverse whirls in absolute and relative coordinate systems and their relationships. Responses to periodic force and base excitations at a constant rotational speed of the shaft are obtained and a modified Campbell diagram based on this is developed. Whirl of the center of the disk is plotted as an orbital or phase plot and its rotational direction noted. Finally, based on the above plots, forward and reverse whirl zones for the two excitation types are established.

Sign in / Sign up

Export Citation Format

Share Document