Results 31 to 40 of about 315,812 (185)

An Overview of Progressive Collapse Behavior of Steel Beam-to-Column Connections

open access: yesApplied Sciences, 2020
Local failure of one or more components due to abnormal loading can induce the progressive collapse of a building structure. In this study, by the aid of available full-scale test results on double-span systems subjected to the middle column loss ...
Iman Faridmehr   +1 more
doaj   +1 more source

Experimental Study on Vortex-Induced Vibration of Riser under Wake Interference

open access: yesShiyou jixie, 2022
To explore the relationship between the incoming flow velocity and the response characteristics of risers under different arrangement modes,and to compare and analyze the flow interference effects under different working conditions,the vortex-induced ...
Zhao Deguang   +3 more
doaj  

Comprehensive Evaluation Method for Urban Rail Transit Rigid Catenary System Health Status

open access: yesChengshi guidao jiaotong yanjiu
[Objective] To ensure the safe operation of urban rail transit rigid catenary systems, a comprehensive evaluation method for assessing their health status is proposed. [Method] A two-level comprehensive evaluation index system is established based on AHP
GONG Xiao   +4 more
doaj   +1 more source

Capability and Limitations of a Tuned Mass Damper for a 15‐MW Semisubmersible Floating Wind Turbine

open access: yesWind Energy, Volume 29, Issue 11, November 2026.
ABSTRACT Large floating offshore wind turbines (FOWTs) under coupled aerodynamic and hydrodynamic loading exhibit broadband low‐frequency response in addition to the platform‐pitch resonance. Tuned mass dampers (TMDs) have been studied for a range of applications, but their net benefit under fully coupled operational conditions has not been quantified.
Yu Gao   +3 more
wiley   +1 more source

Statistical identification of geometric parameters for high speed train catenary [PDF]

open access: yes, 2014
Pantograph/catenary interaction is known to be strongly dependent on the static geometry of the catenary, this research thus seeks to build a statistical model of this geometry.
BALMES, Etienne   +2 more
core  

Impact Analysis of the 八-shaped Layout Scheme of Rigid Catenary Stagger Value on Pantograph-Catenary Wear

open access: yesChengshi guidao jiaotong yanjiu
[Objective] Based on the “八-shaped” layout scheme of the rigid catenary stagger value, the factors affecting the pantograph-catenary (PC) wear of the rigid catenary are analyzed and measures to improve the wear are proposed.
CHEN Xianzhi   +3 more
doaj   +1 more source

RESEARCH ON SEMI-ACTIVE CONTROL METHODS FOR STADDLE MONORAIL′S PANTOGRAPH WITH SLIDING MODE VARIABLE STRUCTURE (MT)

open access: yesJixie qiangdu, 2023
Staddle monorail use rigid catenary, which often produce strong rigid vibrations and violent fluctuations in contact forces affecting pantograph receiving quality and service life during operation.
CHEN Lin, XIONG Jun, WANG ShangQing
doaj  

Sparse‐Aperture Quasi‐Achromatic Spintronic Terahertz Emitter Enabled by Binary‐Phase Metasurface and Multi‐Spectral Intensity Optimization

open access: yesNanophotonics, Volume 15, Issue 19, 13 October 2026.
We propose a sparse‐aperture shared‐aperture design with multispectral intensity optimization, enabling a Pt/W binary‐phase metasurface directly integrated with a spintronic emitter. The device achieves quasi‐achromatic focusing across 1.0–1.5 THz, with intensity fluctuation below 33% and edge preservation above 0.68.
Wenkai Qiu   +6 more
wiley   +1 more source

Mechanical Response and Dissipation of Progressively Fractured Annealed Laminated Glass Elements Under Large Cyclic Displacements

open access: yesEngineering Reports, Volume 8, Issue 9, September 2026.
This article investigates the post‐fracture bending response of 2‐ply laminated (LG) samples composed of annealed (AN) glass and bonded by EVA or SG interlayers. Attention is given to the effect of partial and total glass fracture, and to the cyclic response of fractured LG specimens under large displacements.
Chiara Bedon, Nicola Cella
wiley   +1 more source

RESEARCH ON MONITORING METHOD AND APPLICATION OF THE DYNAMIC CONTACT FORCE BETWEEN CATENARY AND PANTOGRAPH BASED ON STRAIN RESPONSE INVERSION TECHNOLOGY (MT)

open access: yesJixie qiangdu, 2022
In-situ monitoring of the dynamic contact force between catenary and pantograph is very important for the quality evaluation of pantograph catenary current collection.
LEI YuHeng   +5 more
doaj  

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