Dynamic response of a functionally graded Timoshenko beam on two-parameter elastic foundations due to a variable velocity moving mass

I Esen - International Journal of Mechanical Sciences, 2019 - Elsevier
In this study, a modified finite element method (FEM) that can be used to analyse the
transverse vibrations of a Timoshenko beam, made of functionally graded materials (FGMs) …

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 …

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 …

Semi-Analytical Approach and Green's Function Method: A Comparison in the Analysis of the Interaction of a Moving Mass on an Infinite Beam on a Three-Layer …

Z Dimitrovová, T Mazilu - Materials, 2024 - mdpi.com
In this paper, the interaction of a mass moving uniformly on an infinite beam on a three-layer
viscoelastic foundation is analyzed with the objective of determining the lowest velocity at …

On the critical velocity of a mass moving along an infinite beam supported by three viscoelastic layers

Z Dimitrovová, T Mazilu - Journal of Physics: Conference Series, 2024 - iopscience.iop.org
Numerical assessment of the dynamic behaviour of structures subject to moving loads are
under huge development, as are other approaches, to mention eg (semi) analytical methods …

Instability of Moving Mass (es): Parameters Leading to Irregular Cases and Associated Implications for Railway Design

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

Nonlinear multiple degrees of freedom model for tuned liquid damper

ASE Nassef, A Abdelhamid - Iranian Journal of Science and Technology …, 2021 - Springer
This paper investigates new nonlinear mechanical model for sloshing liquid in liquid damper
to mitigate vibrations. The proposed nonlinear model consists of successive multiple liquid …