Results 41 to 50 of about 6,224 (227)
Shock and Vibration, 2021 To study the mechanical characteristics of ballasted bed under dynamic stability, a three-dimensional discrete element model of ballasted bed with 1000 mm × 700 mm × 550 mm is established based on the discrete element method. Meanwhile, a simulation test
Lihua Wang +5 more
doaj +1 more source
Dynamic effect of high speed railway traffic loads on the ballast track settlement [PDF]
, 2011 The traditional ballast track structures are still being used in high speed railways lines with success, however technical problems or performance features have led to non-ballast track solution in some cases.
Gabaldón Castillo, Felipe +2 more
core +1 more source
Fully three-dimensional analysis of high-speed traintracksoil-structure dynamic interaction [PDF]
, 2010 In this paper, a general and fully three dimensional multi-body-finite element-boundary element model, formulated in the time domain to predict vibrations due to train passage at the vehicle, the track and the free field, is presented.
Domínguez Abascal, José +2 more
core +1 more source
Enabling Under Ice Glider Operations: A Backseat Driver Approach
Journal of Field Robotics, EarlyView.ABSTRACT Polar Oceans are key locations for forcing global ocean circulation, influencing both global climate and biogeochemical cycles. Due to restricted access to these seasonally and perennially ice‐covered regions, these areas are severely undersampled.
Yaomei Wang +12 more
wiley +1 more source
Track Modulus Assessment of Engineered Interspersed Concrete Sleepers in Ballasted Track
Applied Sciences, 2020 Ballasted railway track is typically constructed using sleepers that are manufactured from a common material type within a given length of track. Timber and concrete are the two most common sleeper materials used internationally. Evidence from historical
Arthur de Oliveira Lima +3 more
doaj +1 more source
Development of a Tram-Train wheel profile for dual-operation running [PDF]
, 2015 This paper explores the problematic interface between a Tram-Train vehicle and two very different railway infrastructures, detailing the analysis and design process required to develop an optimised wheel profile for dual operation running.
Allen, Paul, Crosbee, David
core
Multi‐level fatigue reliability assessment of reinforced concrete railway bridges
Structural Concrete, EarlyView.Abstract This paper presents a multi‐level reliability framework for assessing the fatigue life of reinforced concrete (RC) railway trough bridges subjected to cyclic loading. The framework incorporates increasing levels of analytical complexity and real‐world data in four steps. First, an analytical model applies S–N curves and the Palmgren–Miner rule
Silvia Sarmiento +7 more
wiley +1 more source
Applied Sciences, 2021 This study investigates a load-based, track-irregularity-analysis technique for ballasted tracks on a serviced railway line with respect to excavation work conducted in adjacent sites.
Jung-Youl Choi +3 more
doaj +1 more source
Mooring and ground handling rigid airships [PDF]
, 1975 The problems of mooring and ground handling rigid airships are discussed. A brief history of Mooring and Ground Handling Rigid Airships from July 2, 1900 through September 1, 1939 is included.
Walker, H., Jr.
core +1 more source
Moving element analysis of high-speed rail system accounting for hanging sleepers
MATEC Web of Conferences, 2018 It is very common in the ballasted track system that sleepers are not well supported by the ballast materials due to the uneven settlement of the ballast under repeated train passage.
Dai Jian, Keng Ang Kok, Jiang Dongqi
doaj +1 more source