Results 1 to 10 of about 2,259,182 (352)

A Finite-Element Model of Seated Human Body Representing the Distribution of Static Pressures and Dynamic Forces over a Rigid Seat During Vertical Vibration for Sitting Postures with Various Thigh Contact

Applied Sciences
Overall sitting comfort is related to both static pressure distribution and dynamic human–seat interaction during vibration. This study proposes a simplified finite-element model of the seated human body that could potentially be used to assess overall ...
Weitan Yin, Shaoqing Liu, Jianying Liang, Chi Liu, Yi Qiu, Xu Zheng, Linfeng Sun, Shan Huang   +7 more
doaj   +1 more source

Positioning of High-speed Trains using 5G New Radio Synchronization Signals [PDF]

, 2018
We study positioning of high-speed trains in 5G new radio (NR) networks by utilizing specific NR synchronization signals. The studies are based on simulations with 3GPP-specified radio channel models including path loss, shadowing and fast fading effects.
Koivisto, Mike, Levanen, Toni, Pajukoski, Kari, Renfors, Markku, Talvitie, Jukka, Valkama, Mikko   +5 more
core   +2 more sources

Multifunctional strut-plate composite lattice metamaterial for integrated acoustic, energy, and vibration management

Virtual and Physical Prototyping
In the pursuit of engineering solutions capable of managing persistent hazards such as noise, vibration, and structural impacts, materials that combine sound absorption, vibration damping, and deformation resistance are crucial.
Xi Wang, Shiyi Wang, Minghao Huang, Ruixian Qin, Bingzhi Chen   +4 more
doaj   +1 more source

Wind Tunnel Testing on Crosswind Aerodynamic Forces Acting on Railway Vehicles

Journal of Fluid Science and Technology, 2010
This study is devoted to measure the aerodynamic forces acting on two railway trains, one of which is a high-speed train at 300km/h maximum operation speed, and the other is a conventional train at the operating speed 100km/h. The three-dimensional train
Hyeok-bin KWON, Seong-won NAM, Won-hee YOU   +2 more
doaj   +1 more source

Development of an efficient finite element model for the dynamic analysis of the train-bridge interaction [PDF]

, 2010
The design of high-speed railway bridges comprises a set of demands, from safety and serviceability aspects, to new types of equipment and construction solutions.
Azevedo, A., Calcada, R., Neves, Sérgio
core   +1 more source

Train Time Delay Prediction for High-Speed Train Dispatching Based on Spatio-Temporal Graph Convolutional Network

IEEE transactions on intelligent transportation systems (Print), 2021
Train delay prediction can improve the quality of train dispatching, which helps the dispatcher to estimate the running state of the train more accurately and make reasonable dispatching decision.
Dalin Zhang, Yunjuan Peng, Yumei Zhang, Daohua Wu, Hongwei Wang, Hailong Zhang   +5 more
semanticscholar   +1 more source

Hydrolysis behavior and mechanism of AlON powders

Materials & Design
AlON-C (∼25 μm) powders were prepared using the carbothermal reduction and nitridation (CRN) method. The powders were subsequently processed through milling to obtain AlON-M (∼1.6 μm) and AlON-F (∼456 nm).
Jianxin Xu, Dongming Li, Jian Song, Delei Du, Xu Zhang   +4 more
doaj   +1 more source

Tribo-Dynamic Behavior of Double-Row Cylindrical Roller Bearings Under Raceway Defects and Cage Fracture

Lubricants
High-quality data samples are essential for the early detection of bearing failures and the analysis of bearing behavior. The accurate simulation of bearing fault conditions can provide valuable insights into understanding failure mechanisms.
Longqing Fan, Xingwang Zhao, Wei Hao, Chaoyang Miao, Xiuyuan Hu, Congcong Fang   +5 more
doaj   +1 more source

Optimization of optical data transmitters for 40-Gb/s lightwave systems using frequency resolved optical gating [PDF]

, 2002
The measurement technique of frequency resolved optical gating has been used to optimize the phase of a 40-GHz train of optical pulses generated using a continuous-wave laser gated with an external modulator. This technique will be vital for optimization
Barry, Liam P., del Burgo, S., Harvey, John D., Reid, Douglas A., Thomsen, Benn C., Watts, Regan T.   +5 more
core   +1 more source

Design and analysis of multiple bio-inspired aperiodic lattice structures by laser powder bed fusion

Materials & Design
Laser powder bed fusion (LPBF) fabricated lattice structures are widely used as energy absorbers due to their lightweight and porous nature. To develop a bio-inspired lattice structure that enhances energy absorption capacity while achieving controllable
Dongming Li, Tongyuan Sun, Bingzhi Chen, Xu Zhang   +3 more
doaj   +1 more source