Results 11 to 20 of about 242,308 (112)

On the strength of glasses [PDF]

Proceedings of the National Academy of Sciences, 2012
The remarkable strength of glasses is examined using the random first order transition theory of the glass transition. The theory predicts that strength depends on elastic modulus but also on the configurational energy frozen in when the glass is prepared.
Wisitsorasak, Apiwat, Wolynes, Peter G.
openaire   +3 more sources

Calculation method of radiation heat flux field for quartz lamp array for the constant diameter cabins of missile

Xibei Gongye Daxue Xuebao
A rapid calculation method was proposed for the heat flux field of the cylindrical quartz lamp array for the ground thermal test of the constant diameter cabin of missile under multi-elements mesh for the semi-cylinder of the filament.
ZHANG Xiaoxiao, WANG Binwen, YAO Chisen, LI Xinxin, WU Jingtao   +4 more
doaj   +1 more source

Multidisciplinary Optimization Design of Low-Noise Propellers

Aerospace, 2023
In this paper, a multidisciplinary optimization design method and its verification of low-noise aircraft propellers considering aerodynamics, noise, and structural strength were carried out to further reduce the aerodynamic noise of the aircraft ...
Dongwen Xue, Qun Yan, Zhuohan Li, Kai Wei   +3 more
doaj   +1 more source

Extreme thermal load generation method for high-temperature structures in atmospheric environment

Xibei Gongye Daxue Xuebao
For addressing the severe aerodynamic thermal load simulation challenge of hypersonic aircraft in ground tests, an extreme thermal load generation method based graphite for high-temperature structures in atmospheric environment is proposed.
WANG Binwen, ZHANG Yi, QIN Qiang, CHEN Hong, WU Jingtao   +4 more
doaj   +1 more source

Structure design of variable camber wing trailing edge based on multi-block rotating mechanism

Xibei Gongye Daxue Xuebao, 2023
The variable camber trailing edge enables the aircraft to maintain the best aerodynamic performance throughout the flight envelope, so as to achieve the ultimate goal of reducing aircraft fuel consumption and air pollutant emissions.
SHI Xintong, YANG Yu, GE Wenjie, WANG Zhigang, SUN Xiasheng   +4 more
doaj   +1 more source

An Efficient High-Frequency Design Methodology for APU Inlet Mufflers Based on Axial Segmentation and Optimal Frequency Selection

Aerospace
The International Civil Aviation Organization (ICAO) sets strict limits for aircraft ramp noise, a key source of which is Auxiliary Power Unit (APU) inlet noise.
Dongwen Xue, Qun Yan, Yong Zheng, Jiafeng Yang, Yonghui Chen   +4 more
doaj   +1 more source

Multi-disciplinary optimization design method and application of BWB fuselage structure based on PRSEUS configuration

Xibei Gongye Daxue Xuebao
Aiming at the problems such as low structural bearing efficiency, structural weight gain, heavy load and cabin noise caused by high rear backbraced engine in BWB layout, based on novel materials and pultruded rod stitched efficient unitized structure ...
TIAN Rui, WANG Haiyan, NIE Xiaohua, LUO Lilong, TIAN Yu, PENG Tao   +5 more
doaj   +1 more source

Kinetics of Plastic Deformation Localization Bands in Polycrystalline Nickel

Metals, 2021
Jerky flow has recently aroused interest as an example of complex spatiotemporal dynamics resulting from the collective behavior of defects in Al- and Mg-based alloys under loading.
Svetlana A. Barannikova, Mikhail V. Nadezhkin   +1 more
doaj   +1 more source

The buffeting loading method research based on the all-movable vertical tail structure

Xibei Gongye Daxue Xuebao
During high-angle-of-attack flight and other severe conditions, high-maneuverability aircrafts often experience strong buffeting phenomena in critical structures such as the all-movable vertical tail structure, necessitating dynamic fatigue tests under ...
LI Yixuan, ZHANG Fei, LI Kaixiang, BAI Chunyu, LIU Xiaochuan, WANG Binwen   +5 more
doaj   +1 more source

Literature Survey of Dry Friction Damper Model and Analysis Method forDepressing Vibration of Rotating Blade

Hangkong gongcheng jinzhan, 2018
Rotating blades are key components in aircraft engine, the vibration characteristics and vibration reduction technology is rather important for engine performance, structural integrity, and work reliability.
Qin Jie, Yan Qun, Huang Wenchao
doaj   +1 more source