Browsing by Author "Hussein, Mohammed"
Now showing items 1-18 of 18
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A MEASUREMENT CAMPAIGN TO INVESTIGATE THE EFFECT OF USING SOFT RAILPADS ON GROUND-BORNE VIBRATIONS FROM UNDERGROUND RAILWAYS
( Society of Acoustics , 2023 , Conference)Railway networks may run through or beneath populated regions and significant landmarks. Hence, the ground-borne vibration caused by the trains might affect nearby buildings, residents, and the sensitive equipment within ... -
A novel video-vibration monitoring system for walking pattern identification on floors
( Elsevier , 2020 , Article)Walking-induced loads on office floors can generate unwanted vibrations. The current multi-person loading models are limited since they do not take into account nondeterministic factors such as pacing rates, walking paths, ... -
A numerical and experimental investigation of a special type of floating-slab tracks
( Elsevier , 2020 , Article)Floating-Slab Tracks (FST) are predominantly used for mitigating railway-induced vibrations where the concrete slab is mounted on soft resilient bearings to provide vibration isolation. This paper presents a research study ... -
AN EXPERIMENTAL AND NUMERICAL INVESTIGATION OF THE COMBINATION OF DIFFERENT DAMPER TYPES FOR IMPROVED CONTROL OF VIBRATION
(2022 , Master Thesis)Eliminating and reducing unwanted vibrations required a good knowledge of the dynamic systems fundamental components; mass, spring, and damper. Meanwhile, dampers are responsible for reducing the vibrations amplitudes and ... -
Comparison of the Mechanical Behavior of Railroad Ballast in a Box Test under Sinusoidal and Realistic Train Loadings Using Discrete Element Method
( Qatar Univesrity Press , 2020 , Conference)A ballasted track is a popular type of railway track and its use is increasing all over the world. A ballasted track consists of different structural elements like rails, fasteners, sleepers, ballast layer, sub-ballast ... -
Effect of rail unevenness correlation on the prediction of ground-borne vibration from railways
( DC/ConfOrg , 2015 , Conference)This paper presents the influence of rail unevenness correlation on the predicted track and ground vibration. The study is based on an integrated railway model in the wavenumber-frequency domain with varying complexity ... -
Enhancing the damping effect of MRF damper using an external magnetic excitation system
( Institute of Physics Publishing , 2023 , Article)The magnetic field generated by the damper’s magnetic circuit governs the yield stress value of the Magnetroholgical Fluid (MRF) damper and hence its damping effect. This paper contributes to the literature on the development ... -
Experimental and numerical investigation of damping in a hybrid automotive damper combining viscous and multiple-impact mechanisms
( SAGE , 2022 , Article)One of the least investigated approaches in passive vibration control is the possibility of combining different types of dampers that use different damping principles. Such a combination process, if wisely designed and ... -
Experimental validation of a numerical model for the ground vibration from trains in tunnels
( DC/ConfOrg , 2015 , Conference)Ground vibration and ground-borne noise from trains in tunnels are attracting increasing attention from researchers and engineers. They are important environmental issues related with the operation of underground networks ... -
Geomechanical Modelling of Railroad Ballast: A Review
( Springer , 2019 , Article)Traditional ballasted tracks have been used intensively around the world with ballast as the main material for tracks. Ballast has a significant contribution to the track alignment, stability and sustainability. After ... -
Ground-borne vibrations due to railway traffic in urbanized areas: A numerical study about traffic in trench cross-sections
( National Technical University of Athens , 2017 , Conference)Modern cities require efficient mass transportation systems like subway and railway networks. Due to the lack of available space and also due to environmental concerns, it is usually preferable to use the underground space ... -
Investigating the characteristics of a magnetorheological fluid damper through CFD modeling
( Institute of Physics Publishing , 2021 , Article)Computational Fluid Dynamics (CFD) analysis is conducted on mono-tube vehicle MRF damper investigated experimentally in a previous study. In this study, the fluid of the type MRF-132DG was inserted inside a damper of a car ... -
Investigation of the Effect of the Force-Frequency on the Behaviour of a New Viscous Damper for Railway Applications
( Qatar Univesrity Press , 2020 , Conference)The primary purpose of this work is to experimentally investigate the damping coefficient of a viscous damper, intended to be used in railway applications to reduce noise emission. The viscous shock absorber used in this ... -
Modelling the dynamic pile-soil-pile interaction in a multi-layered half-space
( DC/ConfOrg , 2015 , Conference)Within the context of railway ground-borne vibration, the dynamic pile-soil-pile interaction remains an area that has not been sufficiently investigated. Whilst a number of researchers have scrutinised the vibration response ... -
Numerical study on the damping characteristics of a shock absorber valve utilizing different velocities through CFD analysis
( National Technical University of Athens , 2021 , Conference)Shock absorbers or hydraulic dampers are power dissipating devices. The fluid flow inside the damper is governed by predefined passages. The damping effect is accomplished by the resistance of oil to flow through the ... -
The PiP model and progress in ground vibration from railways
( Australian Acoustical Society , 2017 , Conference)Vibration in the ground causes problems. At large amplitude vibration causes damage, the most obvious example being earthquake damage. But the ground motion in a damaging earthquake is typically low-frequency (below 1Hz) ... -
The effect of track load correlation on ground-borne vibration from railways
( Academic Press , 2017 , Article)In predictions of ground-borne vibration from railways, it is generally assumed that the unevenness profile of the wheel and rail is fully correlated between the two rails and the two wheels of an axle. This leads to ... -
Wireless and real-time structural damage detection: A novel decentralized method for wireless sensor networks
( Elsevier , 2018 , Article)© 2018 Elsevier Ltd Being an alternative to conventional wired sensors, wireless sensor networks (WSNs) are extensively used in Structural Health Monitoring (SHM) applications. Most of the Structural Damage Detection (SDD) ...
