Dynamic strength of the 15Kh2NMFA steel in the range of sub-microsecond durations of shock-wave load

2018 ◽  
Vol 1 (1) ◽  
pp. 101-105
Author(s):  
G.V. Garkushin ◽  
A.S. Savinykh ◽  
G.I. Kanel ◽  
S.V. Razorenov
Keyword(s):  
Shock Wave ◽  
Dynamic Strength ◽  
Wave Load ◽  
15Kh2nmfa Steel

Experimental investigation on the shock-wave load attenuation by geometrical means

Shock Waves ◽  
2009 ◽  
Vol 20 (1) ◽  
pp. 29-40 ◽  
Author(s):  
Shachar Berger ◽  
Oren Sadot ◽  
Gabi Ben-Dor
Keyword(s):  
Shock Wave ◽  
Experimental Investigation ◽  
Wave Load

Effect of the shock-wave treatment on the dynamic strength of 38KhN3MFA steel

2000 ◽  
Vol 26 (8) ◽  
pp. 734-736 ◽  
Author(s):  
M. V. Sil’nikov ◽  
A. I. Mikhailin ◽  
A. V. Petrov ◽  
Yu. I. Meshcheryakov ◽  
V. A. Ermolaev ◽  
...  
Keyword(s):  
Shock Wave ◽  
Dynamic Strength ◽  
Wave Treatment ◽  
Shock Wave Treatment ◽  
38Khn3mfa Steel

scholarly journals Personnel Casualty Assessment for Explosion in the Subway Platform

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Jinju Zhang ◽  
Liqiong Wang
Keyword(s):  
Shock Wave ◽  
Explosive Charge ◽  
Assessment Method ◽  
Notch Effect ◽  
Distribution Characteristics ◽  
Wave Load ◽  
Spatial Distribution Characteristics ◽  
Injury Model ◽  
Personnel Safety ◽  
Casualty Assessment

The subway station is easy to be attacked by terrorist bombings, and it will cause heavy casualties. In this paper, a comprehensive casualty assessment method for personnel in the subway structure was established based on the existing personnel injury model. The spatial distribution characteristics of the shock wave suffered by the personnel in the subway platform were obtained. Combined with the comprehensive casualty assessment method, the personnel casualty area for the explosions in the subway platform was divided. The results show that for the same explosive charge, the maximum positive phase impulse generated by the explosion at the edge of the platform is smallest. The “notch effect” for the stair exit will increase the shock wave load. When the explosive is exploded in the center of the platform, the smaller the explosive charge is, the more obvious the “notch effect” is. When the explosive charge reaches 40 kg, the personnel safety area is reduced to a certain extent behind the stair except for the explosion happening at the stair. Also, the higher the shield door is, the larger the safety area behind the stair is.

Research on piezoelectric pressure sensor for shock wave load measurement

2020 ◽  
Vol 104 ◽  
pp. 382-392 ◽  
Author(s):  
Yingjun Li ◽  
Zhikang Yang ◽  
Guicong Wang ◽  
Cong Yang
Keyword(s):  
Shock Wave ◽  
Pressure Sensor ◽  
Wave Load ◽  
Load Measurement ◽  
Piezoelectric Pressure Sensor

Spall Fracture of a VNZh-90 Alloy Under a Shock Wave Load

2019 ◽  
Vol 60 (5) ◽  
pp. 949-955
Author(s):  
I. R. Trunin ◽  
I. A. Tereshkina ◽  
A. M. Podurets ◽  
V. G. Simakov ◽  
M. I. Tkachenko ◽  
...  
Keyword(s):  
Shock Wave ◽  
Spall Fracture ◽  
Wave Load

Pressure Load on Rigid Structure Induced by Double Underwater Explosions

2016 ◽  
Author(s):  
Rui Han ◽  
Aman Zhang ◽  
Shiping Wang
Keyword(s):  
Shock Wave ◽  
Underwater Explosion ◽  
Time Difference ◽  
Wave Load ◽  
Underwater Explosions ◽  
Rigid Structure ◽  
Pressure Load ◽  
Adjacent Structures ◽  
Explosive Source ◽  
Source Case

Underwater explosion is a severe threat to nearby ocean structures, such as underwater construction, floating vessels. The pressure load produced by underwater explosion of explosives consists of shock wave load and the explosion bubble pulsation pressure load. After the detonation, there will be a shock wave propagating radially outwards and it’s followed by a large oscillating bubble. The shock wave has the first damaging effect on adjacent structures. Then, the collapse and high-speed jet of oscillating bubbles will cause the second damage to structures. When there are double explosive sources near a rigid structure, the mutual superposition of shock waves and the interaction between two bubbles may improve the explosive damage. If the distance between one explosive source and the rigid structure is fixed, the damage force produced by double underwater explosions is related to many factors, like the detonation time difference and the distance between two explosive sources. At first, the pressure field in single explosive source case is numerically simulated by using the AUTODYN in this paper. Next, pressure fields of underwater explosion detonated by double sources at the same time and with time difference are calculated, respectively. The flow fields in double explosive sources case are compared with that in single explosive source case. The effect of the detonation time difference and the distance between explosive sources on the damage force is investigated and analysed in detail.

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