Two-layer model of the railway track: Analysis of the critical velocity and instability of two moving proximate masses

Z Dimitrovová - International Journal of Mechanical Sciences, 2022 - Elsevier
In this paper, the widely used two-layer model of the railway track is analysed with focus on
the critical velocity and instability of moving masses. The model is assumed to be infinite …

Dynamic interaction and instability of two moving proximate masses on a beam on a Pasternak viscoelastic foundation

Z Dimitrovová - Applied Mathematical Modelling, 2021 - Elsevier
The study analyzes the dynamic interaction of proximate masses using a new form of semi-
analytical results for the moving mass problem developed by the author. This paper presents …

[HTML][HTML] Transition radiation in an infinite one-dimensional structure interacting with a moving oscillator—the Green's function method

AB Fărăgău, T Mazilu, AV Metrikine, T Lu… - Journal of Sound and …, 2021 - Elsevier
Transition zones in railway tracks are areas with considerable variation of track properties
(eg, foundation stiffness) which may cause strong amplification of the response, leading to …

The time domain moving Green function of a railway track and its application to wheel–rail interactions

X Sheng, X Xiao, S Zhang - Journal of Sound and Vibration, 2016 - Elsevier
When dealing with wheel-rail interactions for a high-speed train using the time domain
Green function of a railway track, it would be more reasonable to use the moving Green …

Dynamic response of an infinite Timoshenko beam on a nonlinear viscoelastic foundation to a moving load

H Ding, KL Shi, LQ Chen, SP Yang - Nonlinear Dynamics, 2013 - Springer
The present paper investigates the dynamic response of infinite Timoshenko beams
supported by nonlinear viscoelastic foundations subjected to a moving concentrated force …

On the critical velocity of moving force and instability of moving mass in layered railway track models by semianalytical approaches

Z Dimitrovová - Vibration, 2023 - mdpi.com
This article presents a comparison between layered models of a railway track. All analyses
are based on semianalytical approaches to show how powerful they can be. Results are …

Interaction between moving tandem wheels and an infinite rail with periodic supports–Green's matrices of the track method in stationary reference frame

T Mazilu - Journal of Sound and Vibration, 2017 - Elsevier
This paper approaches the issue of the interaction between moving tandem wheels and an
infinite periodically supported rail and points out at the basic characteristics in the steady …

Instability of vibrations of mass (es) moving uniformly on a two-layer track model: Parameters leading to irregular cases and associated implications for railway design

Z Dimitrovová - Applied Sciences, 2023 - mdpi.com
Ballasted railway tracks can be modeled using reduced/simplified models composed of
several layers of discrete components. This paper deals with the two-layer model, which is …

Instability of a train of oscillators moving along a beam on a viscoelastic foundation

T Mazilu - Journal of Sound and Vibration, 2013 - Elsevier
The paper focuses on the theory of the vibration instability in the train of oscillators uniformly
moving along an Euler–Bernoulli beam on a viscoelastic foundation, caused by the …

Stability of vibrations of a moving railway vehicle along an infinite complex three-part viscoelastic beam/foundation system

V Stojanović, MD Petković, J Deng - International Journal of Mechanical …, 2018 - Elsevier
Vibrations of a railway vehicle that moves on a long three-part viscoelastic system can
become unstable because of elastic waves that the railway vehicle generates in the …