Results 1 to 10 of about 31,897 (265)

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

Network analysis of symptom clusters among patients with pulmonary tuberculosis: a cross-sectional study [PDF]

open access: yesBMC Infectious Diseases
Background Patients with pulmonary tuberculosis (PTB) experience complex and co-occurring symptoms. Understanding the structure of these symptom clusters and their interrelationships is crucial for effective management.
Hanhan Kong   +7 more
doaj   +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

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

Correlation of Short Pitch Rail Corrugation with Railway Wheel-Track Resonance at Low Frequencies of Excitation

open access: yesVibration, 2020
As much as there has been a significant increase in the development of railway systems in recent years, one of the significant drawbacks on this mode of transport is ground-borne vibrations and noise emanating from vehicle-track interaction in service ...
Bingo Masiza Balekwa   +1 more
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

Evaluating the Connectivity and Imbalance Contribution of New Sections towards Highway Network: A Complex Network Perspective

open access: yesJournal of Advanced Transportation, 2023
The evaluation of the impacts of new sections on the highway network is an essential aspect of the feasibility study. Existing studies predominantly concentrated on engineering-oriented feasibility assessments, often overlooking their potential effects ...
Zhiyong Wen   +2 more
doaj   +1 more source

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