Abstract
In this work, the nonlinear dynamic and force transmissibility characteristics of a flexible shaft–disk rotor system supported by suspension system with nonlinear stiffness and damping are investigated numerically. The distributed variables representing the elastic motions of the shaft are discretized using the Assumed Mode Method (AMM) and the equations of motion (EOM) are subsequently obtained using Lagrange's equation. The Harmonic Balance (HB) method combined with a continuation scheme is used to determine the nonlinear frequency response and force transmissibility curves due to disk unbalance force. The effect of the bearing stiffness nonlinearity on the system dynamics when supported by stiff and soft linear bearing stiffness is investigated. In addition, the influence of the bearing damping nonlinearity is investigated and compared with that due to linear damping.
| Original language | English |
|---|---|
| Article number | 103501 |
| Journal | International Journal of Non-Linear Mechanics |
| Volume | 124 |
| DOIs | |
| State | Published - Sep 2020 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2020 Elsevier Ltd
Keywords
- Force transmissibility
- Harmonic balance method
- Multi-mode frequency response
- Nonlinear stiffness and damping
- Shaft–disk rotor
- Suspension system
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Applied Mathematics