Results 1 to 10 of about 91,395,120 (258)

Improvement of Milling Stable Processing Condition for a Cutter With Large Ratio of Length to Diameter [PDF]

IEEE Access, 2020
In order to machine complex box and shell structures, the cutter with large ratio of length to diameter is usually used, whereas the low rigidity of the cutter hinders the increase of the stable machining parameters.
Yan Xia, Yi Wan, Xichun Luo, Yanan Li, Jinglong Cao, Qinghua Song, Zhanqiang Liu   +6 more
doaj   +3 more sources

The advanced p-y method for analyzing the behaviour of large-diameter monopiles supporting offshore wind turbines [PDF]

E3S Web of Conferences, 2020
The analyses of monopile foundations have been heavily based on the p-y response curves (to represent lateral soil resistances) published by API RP 2GEO (2011) and DNV (2013), which are proven reliable and applicable for piles with smaller diameters that
Van Impe William F, Wang Shin-Tower
doaj   +1 more source

DSMC Simulation of the Effect of Needle Valve Opening Ratio on the Rarefied Gas Flows inside a Micronozzle with a Large Length-to-Diameter Ratio

Aerospace, 2023
The cold gas micro-propulsion system can provide low noise and ultra-high accuracy thrust for satellite platforms for space gravitational wave detection, high-precision earth gravity field measurement.
Xudong Wang, Yong Li, Yong Gao, Chenguang Gao, Weichun Fu   +4 more
doaj   +1 more source

Direct Simulation Monte Carlo Simulation of the Effect of Needle Valve Structures on the Rarefied Flow of Cold Gas Thrusters

Micromachines, 2023
The needle valve, serving as the flow control unit of the thruster system, is a crucial component of the entire thruster. Its performance directly impacts the flow state of the rarefied gas in the micro-nozzle structure of the cold gas micro-thruster ...
Songcai Lu, Xuhui Liu, Xudong Wang, Shurui Zhang, Yusong Yu, Yong Li   +5 more
doaj   +1 more source

Effects of the Wall Temperature on Rarefied Gas Flows and Heat Transfer in a Micro-Nozzle

Micromachines, 2023
When the satellite is in orbit, the thruster will experience drastic temperature changes (100–1000 K) under solar radiation, which will affect the rarefied gas flow state in the micro-nozzle structure of the cold gas micro-thruster.
Shurui Zhang, Yong Li, Xudong Wang, Songcai Lu, Yusong Yu, Jun Yang   +5 more
doaj   +1 more source

Numerical study on the influence of geometric parameters on mechanical properties of Tapered Head Grouted Sleeve joints

Case Studies in Construction Materials, 2022
In order to ensure the effectiveness of the Tapered Head Grouted Sleeve (THS) joints and reduce its impact on prefabricated components, three-dimensional numerical analysis models were established based on the large-scale general finite element analysis ...
Jinnan Chen, Chengshun Xu, Hongtao Liu, Zihong Zhang, Xiuli Du   +4 more
doaj   +1 more source

Preparation of an Anodic Alumina-Supported Ni Catalyst and Development of a Catalytic Plate Reformer for the Steam Reforming of Methane

Energies, 2023
A plate-type Al/Fe–Cr alloy/Al-clad substrate was used to prepare a sandwich-structured plate-type anodic alumina catalyst by anodization, post-modification treatment, and metal loading. The as-prepared plate-type catalyst was utilized in the design of a
Shan Dong, Yi Lin, Jiajun Hu, Chenglin Gu, Leilin Ding, Xinjian Zhang, Shi Jiang, Yu Guo   +7 more
doaj   +1 more source

Influence of Cavity Width on Attenuation Characteristic of Gas Explosion Wave

Shock and Vibration, 2021
This study aimed to investigate the influence of cavity width on the attenuation characteristic of gas explosion wave. Attenuation mechanism of gas explosion wave through cavity was obtained by numerical simulation.
Dengke Xu, Chaomin Mu, Zhongqing Li, Wenqing Zhang   +3 more
doaj   +1 more source

Inner frictional resistance of super-large-diameter steel pipe piles in sand

Yantu gongcheng xuebao, 2020
In recent years, with the increasing installed capacity of offshore wind power, the super-large-diameter steel pipe pile foundation has been widely applied.
LIU Run , HAN De-qing , LIANG Chao , HAO Xin-tong
doaj   +1 more source

Short-Vessel Occlusion Might Indicate Higher Possibility of Success in Reperfusion following Mechanical Thrombectomy in Acute Middle Cerebral Artery Occlusion

Cerebrovascular Diseases Extra, 2021
Background: The impact of the length of the occluded vessel in acute large-vessel occlusion on successful reperfusion by mechanical thrombectomy remains unclear.
Tomoyuki Yoshihara, Ryuzaburo Kanazawa, Takanori Uchida, Tetsuhiro Higashida, Hidenori Ohbuchi, Naoyuki Arai, Yuichi Takahashi   +6 more
doaj   +1 more source