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Zhao Ma, Junjie Ye, Xin Zhang and Wenhua Ye
To analyze the rock-breaking characteristics of an arcing-blade cutter in cutting red sandstone, a two-cutter cutting model was established based on the finite element method. Then, the cutting processes of the arcing-blade cutter at penetrations of 2 mm...
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Wanzhi Zhang, Yunzhen Qu, Xiubo Yin, Hongjuan Liu, Guizhi Mu and Dengshan Li
Sweet potato skin is prone to friction damage during mechanical harvesting. To reveal the friction damage mechanism of sweet potato skin, the impact friction process between a sweet potato and a rod was theoretically analyzed. The main factors affecting ...
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Kedong Zhang, Wenhua Wang, Yihua Liu, Linlin Wang, Yazhen Du, Hongxia Li and Yi Huang
A new type of anti-rolling device denoted as a fluid momentum wheel (FMW) is proposed to address the limitations of traditional gyrostabilizers in reducing the roll responses of floating platforms in waves. The proposed device is based on the same gyrosc...
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Roberto Fanigliulo, Marcello Biocca, Renato Grilli, Laura Fornaciari, Pietro Gallo, Stefano Benigni, Paolo Mattei and Daniele Pochi
The performance of agricultural tires varies with the characteristics of both the terrain and the tractors on which they are mounted, which differently affect the rolling resistance, the traction capacity, and the slip. To reduce the variability of test ...
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Long Zhou, Qiu Dong, Jianqun Yu, Yang Wang, Yulong Chen, Mingwei Li, Wenjun Wang, Yajun Yu and Jun Yuan
An appropriate contact mechanics model and parameters are key to achieving accurate results in discrete element analyzis. This is necessary to predict the process of contact collision between the soil and maize seed during deposition. In this paper, the ...
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José Jiménez-Varona
Rolling motion is the motion where a body flies at a constant pitch angle a with respect to the freestream velocity vector, while undergoing a constant angular rotation p about its longitudinal axis. An effect of this motion is the appearance of a Magnus...
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Tze How New, Zhen Wei Teo, S. Li, Z. A. Ong and Björn Nagel
Flow behavior and aerodynamic performance of a small-scale joined-wing unmanned aerial vehicle (UAV) was studied experimentally and numerically under various pitch and yaw angle combinations in subsonic flow conditions. Selected numerical results are com...
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Songtao Zhang, Peng Zhao, Manhai Gui and Lihua Liang
Among the commonly used ship-stabilizing devices, the fin stabilizer is the most effective. Since the lift force of the conventional fin stabilizer is proportional to the square of the incoming flow velocity, it has a better anti-rolling effect at higher...
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Zhi Li, Weiyong Chen, Yinghui Li and Wenliang Wu
This study considered the effect of pavement aggregate grain size on tyre?pavement contact interaction during the late stages of pavement skid resistance. First, hemispherical shells 7, 9, and 13 mm in diameter were used to simulate coarse pavement aggre...
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Xiaobin Wu, Jun Cheng, Zhilong Xu, Leyang Dai, Qingshan Jiang, Bosheng Su, Li Zhu and Zhenye Zhao
Ultrasonic surface rolling (USRP) is an effective process to improve a workpiece?s fatigue property, in which ultrasonic vibration and static force are applied on the workpiece?s surface. In order to clarify the ultrasonic rolling strengthening mechanism...
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