Results 1 to 10 of about 46,635 (229)

Real-Time State Evaluation System of Antenna Structures in Radio Telescopes Based on a Digital Twin

Applied Sciences
To enhance the intelligence and digital management level of radio telescopes and ensure the safe and stable operation of antennas, this paper proposes a real-time state evaluation method for the antenna structure of radio telescopes based on digital twin
Hanwei Cui, Binbin Xiang, Shike Mo, Wei Wang, Shangmin Lin, Peiyuan Lian, Wei Wang, Congsi Wang   +7 more
doaj   +1 more source

Variable Natural Frequency Damper for Minimizing Response of Offshore Wind Turbine: Principle Verification through Analysis of Controllable Natural Frequencies

Journal of Marine Science and Engineering, 2022
Resonance causes extreme stress, acceleration of fatigue, and reduction in lifespan of offshore wind structures. The main factors that cause resonance are environmental loads such as wind and waves, and dynamic loads caused by rotor movement.
Young-Suk You, Ka-Young Song, Min-Young Sun   +2 more
doaj   +1 more source

Research progress and prospects of seismic performance on underground structure embedded in soft soil foundation

Scientific Reports
For the complexity and difficulty of seismic research on subway station structure system embedded in soft soil foundation, the seismic research method is quite different from the ground structure.
Xuelei Cheng, Qiqi Li, Ran Hai, Shuoshuo Guo, Xiaofan Xing   +4 more
doaj   +1 more source

Prediction method for the reaction force of vehicle door sealing systems.

PLoS ONE
The accuracy of calculating the reaction force in vehicle sealing systems using moment equilibrium equations from statics is highly dependent on the degree of simplification in the mathematical model.
Zhong Yang, Luoxing Li, Jing Huang, Guoqing Chen, Zhengqing Liu, Zhenhu Wang   +5 more
doaj   +1 more source

Research on Nonlinear Dynamics Modeling and Simulation of Harmonic Gear Drive

Jixie chuandong, 2021
Due to the particularity of the structure，the hysteretic stiffness and dynamic friction belong to the inherent properties of harmonic gear drive. Traditional models consider the stiffness as a fixed stiffness or segmented stiffness model，and the friction
Yang Luo, Manyi Chen, Jie Zhang, Ran Yang, Han Zhang   +4 more
doaj  

Application Prospect and Simulation Verification of ATARI Carrier Landing [PDF]

Hangkong bingqi
To promote the application and development in the field of carrier-based aircraft landing, this paper analyzes a landing technology of the US Navy, namely Aircraft Terminal Approach Remote Inceptor (ATARI). By adopting research methods such as literature
Wang Jie, Han Wei, Yin Dawei, Wan Bing, Su Xichao
doaj   +1 more source

Hydrodynamic Performance of Submerged Plates During Focused Waves

Journal of Marine Science and Engineering, 2019
Submerged horizontal plates are widely employed in research of wave structure interaction as a simplification of coastal and ocean engineering structures.
Qinghe Fang, Can Yang, Anxin Guo
doaj   +1 more source

Centrality anomalies in complex networks as a result of model over-simplification

New Journal of Physics, 2020
Tremendous advances have been made in our understanding of the properties and evolution of complex networks. These advances were initially driven by information-poor empirical networks and theoretical analysis of unweighted and undirected graphs ...
Luiz G A Alves, Alberto Aleta, Francisco A Rodrigues, Yamir Moreno, Luís A Nunes Amaral   +4 more
doaj   +1 more source

Visualization of cosmological density fluctuations with phase space analysis: case study: Brans–Dicke theory

European Physical Journal C: Particles and Fields, 2019
Cosmological perturbation theory is a powerful tool to understanding the large-scale structure of the Universe. However, the set of field equations describes the general linear perturbations for the cosmological models is highly nonlinear and coupled ...
Amin Salehi, Hossein Farajollahi
doaj   +1 more source

Analysis and application of a new noise test system for the hydraulic motor

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2019
The loading system of the existing hydraulic motor performance test platform is complicated, the interference is too much, and it is not suitable to measure the hydraulic motor noise level.
Qinghong GONG, Hui HUANG, Ganyong WU, Shumei CHEN, Heng DU   +4 more
doaj   +1 more source