Stability, bifurcation, and vibration control of a discontinuous nonlinear rotor model under rub-impact effect

NA Saeed, J Awrejcewicz, ST Hafez, L Hou… - Nonlinear …, 2023 - Springer
This work aims to investigate the stability, bifurcation, and vibration control of a
discontinuous dynamical model simulating the nonlinear oscillation of a horizontally …

A dynamic model considering the time-varying friction moment of a flexible rotor system

J Liu, Y An, W Fancheng, C Tang, L Xu - Engineering Computations, 2023 - emerald.com
Purpose Bearing friction moments are important factors that affect the vibrations of rotor
systems. The bearing friction moments are related to the dimension parameters, lubrication …

On -DOF active dampers to suppress multistability vibration of a -DOF rotor model subjected to simultaneous multiparametric and external harmonic excitations

NA Saeed, J Awrejcewicz, RA Elashmawey… - Nonlinear …, 2024 - Springer
This article addresses the bifurcation characteristics and vibration reduction of a 2-DOF
dynamical system simulating the nonlinear oscillation of an asymmetric rotor model …

An asymmetric rotor model under external, parametric, and mixed excitations: Nonlinear bifurcation, active control, and rub-impact effect

RA Elashmawey, NA Saeed… - Journal of Low …, 2024 - journals.sagepub.com
This article explores the nonlinear dynamical analysis and control of a 2− DOF system that
emulates the lateral vibration of an asymmetric rotor model under external, multi-parametric …

Exploring static bifurcations in a controlled dynamical system with cubic and quadratic nonlinearities: 2D and 3D visualization

NA Saeed, J Awrejcewicz, OM Omara, L Hou… - Physica …, 2023 - iopscience.iop.org
This work delves into the investigation of static bifurcation control and vibration reduction of
a two-degree-of-freedom dynamical system. The system under study simulates the lateral …

Investigation of Resonance Frequency and Stability of Solutions in a Continuous Rotor System

A Malgol, KP Vineesh, A Saha - Journal of Vibration Engineering & …, 2024 - Springer
Purpose The primary objective of this work is to analyze the effect of different system
parameters on the resonance frequency of the linear rotor system. The effect of internal …

Nonlinear Dynamic Analysis for a Jeffcott Rotor Considering Varying Connection Stiffness of Bolted Joint

X Zhang, Y Wang, D Marmysh - International Journal of …, 2024 - ui.adsabs.harvard.edu
Bolted joints have been widely used in rotor assemblies of aircraft engines. A typical bolt
joint is composed of two metal parts connected mechanically with pre-tensioned bolts …

Numerical and Experimental Analysis for the Dynamics of Flawed–Machining Rod–Disk Rotor with Inner Misalignment

X Jin, Y Liu - Machines, 2022 - mdpi.com
The nonlinear dynamic effects of the misalignment between inner disks in a flawed–
machining rod–disk rotor is studied. Non–uniform stress distribution due to inner …

Modelling and analysis of a continuous rotor systemPart I: Derivation of governing equations and analysis of linear system

A Malgol, S Namitha, KP Vineesh, A Saha - 2023 - researchsquare.com
In this paper, a continuous rotor system is modelled by considering some critical factors, like
the gyroscopic and rotary inertia effects of disc and shaft cross-sections, large shaft …

Modelling and analysis of a continuous rotor system Part II: Analyzing the effect of nonlinearities on the system dynamics

A Malgol, AY Jayaprakash, KP Vineesh, A Saha - 2023 - researchsquare.com
The nonlinear analysis of a continuous rotor system (CRS) is performed in this paper. The
CRS model is derived with the inclusion of some important factors, like the gyroscopic effect …