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Complex Eigenvalue Analysis of Multibody Problems via Sparsity-Preserving Krylov–Schur Iterations

open access: yesMachines, 2023
In this work, we discuss the numerical challenges involved in the computation of the complex eigenvalues of damped multi-flexible-body problems. Aiming at the highest generality, the candidate method must be able to deal with arbitrary rigid body modes ...
Dario Mangoni   +2 more
doaj   +3 more sources

Complex eigenvalue analysis and dynamic transient analysis in predicting disc brake squeal

open access: yesInternational Journal of Vehicle Noise and Vibration, 2006
There are typically two different methodologies that can be used to predict squeal in a disc brake, i.e., complex eigenvalue analysis and dynamic transient analysis. The positive real parts of complex eigenvalues indicate the degree of instability of the disc brake and are thought to associate with squeal occurrence or noise intensity.
Huajiang Ouyang
exaly   +2 more sources

A complex network analysis on the eigenvalue spectra of random spin systems

open access: yesPhysica A: Statistical Mechanics and Its Applications
14 pages, 4 ...
Wen-Jia Rao
exaly   +3 more sources

A Study on the Influence of Dominant Parameters Related to Brake Squeal in the Brake System with the Flexible Pad [PDF]

open access: yes한국정밀공학회지, 2022
The brake squeal noise is a high-frequency noise over 1 kHz range generated by the contact between the brake pad and the disk. The purpose of this paper was to investigate the behavior of the squeal noise characteristics of the brake system from an ...
Eunseok Lee   +5 more
doaj   +1 more source

Influence of Material-Dependent Damping on Brake Squeal in a Specific Disc Brake System

open access: yesApplied Sciences, 2021
The connection of two phenomena, nonconservative friction forces and dissipation-induced instability, can lead to many interesting engineering problems.
Juraj Úradníček   +3 more
doaj   +1 more source

Complex Eigenvalue Analysis for Structures With Viscoelastic Behavior [PDF]

open access: yesVolume 1: 23rd Biennial Conference on Mechanical Vibration and Noise, Parts A and B, 2011
This document deals with a method for eigenvalue extraction for the analysis of structures with viscoelastic materials. A generalized Maxwell model is used to model linear viscoelasticity. Such kind of model necessitates a state-space formulation to perform eigenvalue analysis with standard solvers.
G. Chevallier   +3 more
openaire   +2 more sources

Unstable inner cylinder whirl of concentric double rotating cylinder system

open access: yesMechanical Engineering Journal, 2022
This research investigated unstable inner cylinder whirl in a double rotating cylinder system in which the axis of the inner cylinder is supported elastically in the radial direction and the axis of the outer cylinder is fixed.
Fumitaka YOSHIZUMI, Masanori IRITANI
doaj   +1 more source

Unstable outer cylinder whirl of concentric double rotating cylinder system

open access: yesMechanical Engineering Journal, 2023
This research investigates unstable outer cylinder whirl in a double rotating cylinder system, with both co- and counter-rotation, in which the axis of the outer cylinder is supported elastically in the radial direction and the axis of the inner cylinder
Fumitaka YOSHIZUMI, Masanori IRITANI
doaj   +1 more source

On the Numerical Treatment of the Temporal Discontinuity Arising from a Time-Varying Point Mass Attachment on a Waveguide

open access: yesAlgorithms, 2023
A vibrating pylon, modeled as a waveguide, with an attached point mass that is time-varying poses a numerically challenging problem regarding the most efficient way for eigenvalue extraction.
George D. Manolis, Georgios I. Dadoulis
doaj   +1 more source

Modelling and Stability Analysis of Articulated Vehicles

open access: yesApplied Sciences, 2021
This study constructs a nonlinear dynamic model of articulated vehicles and a model of hydraulic steering system. The equations of state required for nonlinear vehicle dynamics models, stability analysis models, and corresponding eigenvalue analysis are ...
Tianlong Lei, Jixin Wang, Zongwei Yao
doaj   +1 more source

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