A model for rigid asymmetric ellipsoidal projectiles penetrating into metal plates

2021 ◽  
pp. 104140
Author(s):  
Xiaohe Ma ◽  
Qingming Zhang ◽  
Xiaowei Zhang
Keyword(s):  
Metal Plates

scholarly journals Developing a New Type of Jointing the Metal Plates of a Heat Exchanger

2020 ◽  
Vol 934 ◽  
pp. 012048
Author(s):  
D O Onishchenko ◽  
A Yu Krotchenko ◽  
Yu O Fokin ◽  
M V Tverskoy
Keyword(s):  
Heat Exchanger ◽  
Metal Plates ◽  
New Type

scholarly journals Selective Arcing Electrostatically Eradicates Rice Weevils in Rice Grains

Insects ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 522
Author(s):  
Koji Kakutani ◽  
Yoshihiro Takikawa ◽  
Yoshinori Matsuda
Keyword(s):  
Electric Field ◽  
Arc Discharge ◽  
Rice Grains ◽  
Voltage Generator ◽  
Metal Plates

We developed an arc discharge exposer (ADE) that kills rice weevils nesting in dried rice. The ADE features multiple identical metal plates, half of these are linked to a voltage generator and the others are grounded. The plates were arrayed in parallel and an electric field formed between them. Any insect entering the field was arced from the negatively charged plate and killed. The ADE was placed on a vessel containing pest-infested rice grains; the insects were lured out of the grains by mechanically vibrating the vessel. When rice grains move, insects tend to climb upward, thus, the weevils were effectively removed. Our electrostatic apparatus is easy to construct and could be used to control pests in stored rice.

Explosive Welding Using Underwater Shock Wave Generated by the Detonation of the Detonating Code

2011 ◽  
Vol 673 ◽  
pp. 265-270 ◽  
Author(s):  
Akihisa Mori ◽  
Li Qun Ruan ◽  
Kazumasa Shiramoto ◽  
Masahiro Fujita
Keyword(s):  
Shock Wave ◽  
Sound Velocity ◽  
Detonation Velocity ◽  
Explosive Welding ◽  
New Method ◽  
Underwater Shock Wave ◽  
Metal Plates ◽  
Experimental Parameters ◽  
Underwater Shock ◽  
Point Velocity

Detonating code is a flexible code with an explosive core. It is used to transmit the ignition of explosives with high detonation velocity in the range of 5.5 to 7 km/s. However, it is difficult to use detonating code for the explosive welding of common metals since the horizontal point velocity usually exceeds the sound velocity. Hence, in the present work, a new method using underwater shock wave generated by the detonation of detonating code was tried. The details of the experimental parameters and the results are presented. From the results it is observed that the above technique is suitable to weld thin metal plates with relatively less explosives.

A probabilistic model for the vulnerability of metal plates under the impact of cylindrical projectiles

2007 ◽  
Vol 20 (2) ◽  
pp. 128-134 ◽  
Author(s):  
A. Mebarki ◽  
Q.B. Nguyen ◽  
F. Mercier ◽  
R. Ami Saada ◽  
F. Meftah ◽  
...  
Keyword(s):  
Probabilistic Model ◽  
Metal Plates ◽  
The Impact

Analysis on Metal Plate Connection Property of Larch Dimension Lumber

2012 ◽  
Vol 174-177 ◽  
pp. 2170-2175
Author(s):  
Rong Jun Zhao ◽  
Jun Zhen Zhang ◽  
Hai Bin Zhou ◽  
Ben Hua Fei
Keyword(s):  
Bearing Capacity ◽  
Failure Modes ◽  
Metal Plate ◽  
Seismic Structure ◽  
Performance Parameters ◽  
Metal Plates ◽  
Dimension Lumber ◽  
Design Value ◽  
Plate Connection ◽  
Ductility Ratio

In this study, Larix gemilinii and metal plate were selected as the main materials. According to GB5005-2003, the connection properties of tension-splice joint and larch wood were investigated. The results showed that the elastic modulus of Larix gemilinii was not affected by the performance parameters of tension-splice joint greatly and three kinds of failure modes were introduced. Besides the design value for the ultimate bearing capacity of Larix gemilinii and the design value for the ultimate tensile bearing capacity of the metal plates were determined. A conservative calculation method for ductility ratio of metal plates was proposed. The ductility ratio of the metal plate connected joint changed with the construction modes, and the ductility ratio for metal plate parallel to the grain (more than 2.4) was obviously bigger than that of perpendicular to the grain, which complies with the requirements for ductility ratio in anti-seismic structure.

Simulation of Laser-Induced Thermoelastic Behavior in Metal Plates

2013 ◽  
Vol 748 ◽  
pp. 327-330
Author(s):  
Yu Xin Sun ◽  
Jing Xin Liu ◽  
Qi Rong Sun
Keyword(s):  
Heat Transfer ◽  
Laser Pulse ◽  
Phase Change ◽  
Stress Fields ◽  
Comsol Multiphysics ◽  
Thickness Direction ◽  
Commercial Software ◽  
Metal Plates

In this paper, the thermoelastic behavior of Al plate induced by laser pulse is simulated using the commercial software COMSOL Multiphysics. In the simulation, the heat transfer in combination with phase change is considered. The variation of the temperature and stress fields along the thickness direction is obtained and analyzed.

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