Results 1 to 10 of about 89,824 (268)

Application status and problems of machine-made sand in Highway Engineering [PDF]

open access: yesE3S Web of Conferences, 2020
Based on the investigation of the application of machine-made sand in Shaoxing, Zhejiang Province, this paper analyses the supply and demand of local machine-made sand, combined with the application of machine-made sand in highway engineering projects ...
Songhua Wu   +4 more
doaj   +1 more source

Crashworthiness Analysis and Multi-Objective Optimisation of Multi-Cell Windowed Structures under Dynamic Impact Loading

open access: yesShock and Vibration, 2022
Applying a windowed design in a thin-walled structure is a method to further enhance the crashworthiness of the structure. In this study, two kinds of windowed designs were introduced into different regions of a multi-cell energy absorption structure to ...
Jiehao Chen   +3 more
doaj   +1 more source

Influencing factors and mechanism of high-speed railway passenger overall comfort: Insights from source functional brain network and subjective report

open access: yesFrontiers in Public Health, 2022
Overall comfort is the priority for the high-speed railway (HSR) passengers, while its influencing factors and mechanism are not yet apparent. According to the source functional brain network and subjective report, this study revealed the potential ...
Chaojie Fan   +15 more
doaj   +1 more source

“Where Have I Heard It?” Assessing the Recall of Traffic Safety Campaigns in the Dominican Republic

open access: yesEnergies, 2021
Although traffic crashes are the eighth leading cause of death in the world, and are linked to vehicle and infrastructure-related factors, crash-related fatality rates are much higher in low-income countries.
Francisco Alonso   +3 more
doaj   +1 more source

Simulation-based estimation of wheel/rail friction coefficient and wear number considering results of full-scale roller-rig test

open access: yesMechanical Engineering Journal, 2023
When railway vehicles run on sharp curves, the coefficient of friction (COF) between the outer rail and the leading-outside wheel flange of a bogie is an important value related to problems such as wheel/rail severe wear, squeak noise arising from wheel ...
Yosuke ICHIYANAGI   +9 more
doaj   +1 more source

Estimation of coefficient of friction between flange and rail utilizing vehicle dynamics simulation (Investigation based on roller-rig test with different lubrication condition)

open access: yesNihon Kikai Gakkai ronbunshu, 2021
The coefficient of friction (COF) between the outer rail and the leading-outside wheel flange of a railway bogie running on sharp curved track is an important parameter for the progress of wheel/rail wear and running safety.
Yohei MICHITSUJI   +9 more
doaj   +1 more source

A study on aerodynamic noise characteristics of a high-speed maglev train with a speed of 600 km/h [PDF]

open access: yesRailway Sciences, 2023
Purpose – This study aims to explore the formation mechanism of aerodynamic noise of a high-speed maglev train and understand the characteristics of dipole and quadrupole sound sources of the maglev train at different speed levels.
Jie Zhang   +4 more
doaj   +1 more source

Aerodynamic effects of the gap spacing between adjacent vehicles on wind tunnel train models

open access: yesEngineering Applications of Computational Fluid Mechanics, 2020
A certain gap spacing between adjacent vehicles is usually inevitable in wind tunnel force tests of high-speed trains under no crosswind, which may affect the wind tunnel test results.
Yutao Xia   +6 more
doaj   +1 more source

Network-Based Bag-of-Words Model for Text Classification

open access: yesIEEE Access, 2020
The rapidly developing internet and other media have produced a tremendous amount of text data, making it a challenging and valuable task to find a more effective way to analyze text data by machine. Text representation is the first step for a machine to
Dongyang Yan   +3 more
doaj   +1 more source

Elastic mechanical property hybridization of configuration-varying TPMS with geometric continuity

open access: yesMaterials & Design, 2022
Hybrid design is an effective approach to construct functional mechanical metamaterials. In this study, a periodic hybrid method for the TPMS (triply periodic minimal surface) structures is proposed, maintaining the original surface connectivity and ...
Tianyu Gao   +4 more
doaj   +1 more source

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