Results 101 to 110 of about 16,932 (261)

Numerical study on aerodynamic noise reduction of high-speed pantograph using base-frame fairing

Railway Engineering Science
Combining the improved delayed detached eddy simulation and Ffowcs Williams–Hawkings equation, a numerical study is conducted to explore the potential of base-frame fairings in aerodynamic noise reduction of high-speed pantographs and deepen the ...
Jiawei Shi, Jiye Zhang, Tian Li
doaj   +1 more source

Displacement Identification by Computer Vision for Condition Monitoring of Rail Vehicle Bearings. [PDF]

Sensors (Basel), 2021
Lei L, Song D, Liu Z, Xu X, Zheng Z.
europepmc   +1 more source

Review of Catenary Icing on High‐Speed Railways: Characteristics, Impact and Countermeasures

High Voltage, EarlyView.
ABSTRACT The pantograph–catenary system (PCS) is the only path for electrified railway trains to acquire energy. Catenary icing during winter is a common natural phenomenon, which usually leads to the deterioration of the current quality and severely affects the operational safety of trains.
Zheng Li, Guizao Huang, Zhijin Zhang, Yang Liu, Guoqiang Gao, Guolin Yang, Xi Yang, Guangning Wu   +7 more
wiley   +1 more source

An Overview of High‐Temperature Superconducting Cables in DC Systems: Unlocking Potential for High‐Voltage DC Networks

High Voltage, EarlyView.
ABSTRACT This paper provides an overview of high‐temperature superconducting (HTS) cables in DC systems, with a focus on their deployment in high‐voltage DC (HVDC) networks. The assessment of HTS cable properties—such as extremely low electrical resistance, high current‐carrying capacity and a compact geometry—and their comparison with those of ...
Mohammad Hossein Mousavi, Hassan Moradi, Kumars Rouzbehi   +2 more
wiley   +1 more source

Estimation of wheel-rail friction for vehicle certification

, 2013
In certification of new rail vehicles with respect to running characteristics, a wide variety of operating conditions needs to be considered. However, in associated test runs the wheel-rail friction condition is difficult to handle because the friction ...
Berg, Mats,, Persson, Ingemar,, Petrov, Vladislav,   +2 more
core   +1 more source

Effect of loading rate on tensile properties of GFRP/Al alloy adhesive-riveted hybrid joints

Hanjie xuebao
In order to investigate the effect of loading rate on the tensile properties of GFRP/Al adhesive-riveted hybrid joints, single-rivet and double-rivet adhesive-riveted hybrid joints were used as research objects, and dynamic tensile tests were conducted ...
Haiyang LI, Shoune XIAO, Dongdong CHEN, Zhilin WU, Lu WANG, Zhiyu PENG, Lin QIU   +6 more
doaj   +1 more source

Investigation on influencing factors of wheel polygonization of a plateau high-speed EMU train [PDF]

Railway Sciences
Purpose – This study aims to investigate the cause of high-order wheel polygonization in a plateau high-speed electric multiple unit (EMU) train. Design/methodology/approach – A series of field tests were conducted to measure the vibration accelerations ...
Wei Li, Xiaoxuan Yang, Peng Wang, Zefeng Wen, Jian Han   +4 more
doaj   +1 more source

FINANCIALIZED GREEN STATE ENTREPRENEURIALISM AND THE URBANIZATION OF MOUNTAINS: Chongli’s Consumption‐based Territorial Business Model for the 2022 Beijing Winter Olympics

International Journal of Urban and Regional Research, EarlyView.
Abstract This article develops the concept of a territorial business model (TBM) to renew the analysis of the production of the urban built environment beyond established urban cores. Based on the case of Chongli, a site for the 2022 Beijing Winter Olympics, this article provides a double decentering of the ways in which a mountain region was urbanized
Thierry Theurillat, Mengke Zhang
wiley   +1 more source

Modeling snow accumulation in the bogie region caused by train slipstream based on sliding mesh and particle capture criteria

Alexandria Engineering Journal
The accumulated snow swept by the high-speed train's slipstream tends to aggregate on the train's bogie, thereby posing a significant threat to operational safety. In this paper, utilizing the sliding mesh technique and a novel particle injection scheme,
Yuzhe Ma, Jiye Zhang, Jiawei Shi, Lan Zhang, Yao Zhang   +4 more
doaj   +1 more source

China's Strategic Approach to Tech Diplomacy in a Time of Global Uncertainty

Global Policy, EarlyView.
ABSTRACT In the wake of U.S.‐China technological competition and the COVID‐19 pandemic, “tech diplomacy” has gained prominence in Chinese political and academic discourse. This concept is often ideologically framed to critique Western hegemonic narratives perceived as hindering China's technological advancement.
Zhao Alexandre Huang, Xiang Meng
wiley   +1 more source