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السجلات المعروضة 21 -- 30 من 98
The PiP model and progress in ground vibration from railways
(
Australian Acoustical Society
, 2017 , Conference Paper)
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) ...
Numerical study on the damping characteristics of a shock absorber valve utilizing different velocities through CFD analysis
(
National Technical University of Athens
, 2021 , Conference Paper)
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 ...
Energy harvesting from railway vibrations - A numerical study based on beam-on-elastic-foundation under quasi-static loading
(
National Technical University of Athens
, 2021 , Conference Paper)
The objective of this paper is to investigate energy harvesting of train-induced rail
vibrations and to provide a comparison between various feasible harvesting locations based on
the expected electrical power output. ...
Experimental validation of a numerical model for the ground vibration from trains in tunnels
(
DC/ConfOrg
, 2015 , Conference Paper)
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 ...
Modelling the dynamic pile-soil-pile interaction in a multi-layered half-space
(
DC/ConfOrg
, 2015 , Conference Paper)
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 ...
Effect of rail unevenness correlation on the prediction of ground-borne vibration from railways
(
DC/ConfOrg
, 2015 , Conference Paper)
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 ...
Dynamic 3D imaging of gas hydrate kinetics using synchrotron computed tomography
(
EDP Sciences
, 2020 , Conference Paper)
The availability of natural gas hydrates and the continuing increase in energy demand, motivated researchers to consider gas hydrates as a future source of energy. Fundamental understanding of hydrate dissociation kinetics ...
Accounting for the influence of the free surface on the vibration response of underground railway tunnels: A new iterative method
(
KU Leuven - Departement Werktuigkunde
, 2020 , Conference Paper)
This paper presents a new method for calculating the ground-borne vibration from shallow underground railways. The method is based on an iterative wave-scattering approach, which decouples the problem into two sub-systems: ...
Experimental Investigation on the Flexural Capacity of Reinforced Concrete Beams with Treated Wastewater and Recycled Concrete Aggregates
(
Qatar University Press
, 2023 , Conference Paper)
Eco-friendly concrete is the most recommended sustainable option to reduce the excessive diminution of concrete natural resources and the high generation of greenhouse gas emissions. Therefore, the present study explores ...
Optimum Design of Plane Trusses Using Mathematical and Metaheuristic Algorithms on a Spreadsheet
(
Qatar University Press
, 2023 , Conference Paper)
Mathematical optimization refers to the process of finding the values of variables that maximize or minimize a function. Structural optimization is the process of designing a structure in such a way as to minimize its ...