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Yongjie Zhang, Yingjie Huang, Zhiwen Li, Ke Liang, Kang Cao and Yazhou Guo
The numerical accuracy of drop process simulation and collision response for drones is primarily determined by the finite element modeling method and simplified method of drone airframe structure. For light and small drones exhibiting diverse shapes and ...
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Wenchuan Zhang, Junxing Wang, Chuangbing Zhou, Zongshi Dong and Zhao Zhou
A new type of vortex drop shaft without ventilation holes is proposed to resolve the problems associated with insufficient aeration, negative pressure (Unless otherwise specified, the pressure in this text is gauge pressure and time-averaged pressure) on...
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Keqi Liu, Wantao Ding and Chunxu Qu
The penetration characteristics of the slurry and the support pressure transfer mechanisms are critical to the tunnel face stability control during a mechanized excavation. In this paper, numerical calculations coupling computational fluid dynamics (CFD)...
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Xinlei Ni, Qiaozhi Yin, Xiaohui Wei, Peilin Zhong and Hong Nie
Rotorcraft Unmanned Aerial Vehicles (UAVs) often need to take off and land under complex working conditions. The rugged terrains may cause the UAV to tilt during takeoff and landing and even cause rollover and other accidents in severe cases. In this pap...
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Wenqian Lin, Liang Li and Yelong Wang
Particle settlement and pressure drop in a gas?solid two-phase flow in a pipe with a circular cross-section are studied at mixture inlet velocities (V) ranging from 1 m/s to 30 m/s, particle volume concentrations (as) ranging from 1% to 20%, particle mas...
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Bang-Hyun Jo, Dae-Sung Jang, Jai-Hyuk Hwang and Yong-Hoon Choi
The landing gear of an aircraft serves to mitigate the vibration and impact forces transmitted from the ground to the fuselage. This paper addresses magneto-rheological (MR) damper landing gear, which provides high shock absorption efficiency and excelle...
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Giulio Scaravaglione, John-Paul Latham and Jiansheng Xiang
This paper aims to evaluate the structural strength of unreinforced concrete armor units (CAU), named Cubipod®, used on rubble-mound breakwaters and coastal structures, through a numerical methodology using the combined finite?discrete element method (FD...
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Tongqiang Yu, Kun Liu, Jiaxia Wang and Zili Wang
The increase in global warming has secured the arctic region as a research hotspot, and the existence of ice floes and massive icebergs poses a great challenge to the navigational safety of polar ships. For the finite simulation of ship?ice collisions, a...
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Hongcheng Li, Rong Zeng, Zhiyou Niu and Junqi Zhang
Clarifying the maize kernel movement during the crushing process is critical for improving the design and optimization of the impact mill. Rather than through experiments, maize kernel movement can be quantitatively analyzed through the discrete element ...
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Tao Wu, Xuegeng Chen, Limin Yan, Haixiao Gou, Ying Li, Jinhao Zhang and Xuanhe Fu
In order to design the structure and optimize the working parameters of a straw-crushing device, and to improve the qualified rate of straw-crushing length and the rate of straw fluidity, the influence of the airflow characteristics and pressure distribu...
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Dongxu Zhang, Guoqiang Liu, Yongkang Lai, Xiaohui Lin and Weihuang Cai
This paper presents a channel radiator with ribbed ribs and primarily investigates the fluid flow and heat-transfer characteristics of the channel radiator. A three-dimensional numerical simulation of the radiator?s pressure-drop and heat-transfer proces...
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Young IL Park, Su-Hyun Park and Jeong-Hwan Kim
Ships and offshore structures are subjected to impact loads, such as slamming and sloshing. High impact pressures can cause permanent hull deformation by a single impact event. In addition, significant fatigue damage can be accumulated via repeated impac...
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Vitaly Sergeev, Nikolai Vatin, Evgeny Kotov, Darya Nemova and Svyatoslav Khorobrov
The main objective of the study is to propose a technical solution integrated into the pipeline for the transition of the flow regime from slug to bubbly two-phase flow. The object of research is isothermal two-phase gas?Newtonian-liquid flow in a horizo...
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Chuanxing Du, Weiquan Fang, Dianlei Han, Xuegeng Chen and Xinzhong Wang
In order to reduce ground drop loss during mechanical pepper picking and improve the net recovery rate, a drum snap finger picking device was designed. The picking device is mainly composed of a picking drum and auxiliary picking components; the picking ...
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Xiufei Wang, Kun Liu, Mingcai Xu and Hewei Liu
In this study, a common cruciform structure in ship hulls was designed and experimented with in order to analyze its deformation characteristics under planar collision and quasi-static loading. The mechanical parameters of the materials were determined b...
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Edivaldo Lopes Thomaz, Adalberto Alves Pereira
Pág. 315 - 321
Surface hydrological processes are essential to the understanding and prediction of soil erosion. Several equipments are used to measure infiltration rate, runoff and soil loss. However, researchers build their own equipment due to the specific sites whe...
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Esmot Ara Tuli, Mohtasin Golam, Dong-Seong Kim and Jae-Min Lee
The growing need for wireless communication has resulted in the widespread usage of unmanned aerial vehicles (UAVs) in a variety of applications. Designing a routing protocol for UAVs is paramount as well as challenging due to its dynamic attributes. The...
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Georgios Bouloukakis, Ioannis Moscholios, Nikolaos Georgantas and Valérie Issarny
Numerous middleware application programming interfaces (APIs) and protocols were introduced in the literature in order to facilitate the application development of the Internet of Things (IoT). Such applications are built on reliable or even unreliable p...
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Andriy Uzhelovskyi,Mikhail Spilnik,Valentyn Uzhelovskyi,Maxim Shaptala,Halyna Kravec,Oleh Dakhno
Pág. 51 - 56
The increase in the independence of motor-vehicle engines from the influence of external loading on the engine shaft due to the improvement of the dynamic parameters of the elements of the automatic control system of angular speed is investigated. Resear...
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Balázs Bokor, Hacer Akhan, Dogan Eryener, László Kajtár
Pág. 57 - 66
Transpired solar collector (TSC) systems are simple solutions for the preheating of ventilation air with solar energy. Their performance is a function of several environmental factors, so the climatic conditions of the location play an important role. In...
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