Results 11 to 20 of about 78,543 (248)

Mechanism of Microscopic Fracture of Typical Shell Steel under Impact Loading

open access: yesShock and Vibration, 2022
The aim of the current study was to investigate the effects of strain rate and metallographic structure on the fracture mode and fracture pattern of a typical shell steel material under impact loading.
Chuan Zhao   +5 more
doaj   +1 more source

Blasting Vibration Characteristics Calculation Formula considering Cylindrical Charge Delay Time

open access: yesShock and Vibration, 2022
The surrounding rock is divided into the elastic zone and the plastic zone according to the motion and deformation characteristics of the medium in rock blasting.
En Yang, Zhong-Qi Wang, Qian Xu
doaj   +1 more source

Mechanism of the improvement of the energy of host–guest explosives by incorporation of small guest molecules: HNO3 and H2O2 promoted C–N bond cleavage of the ring of ICM-102

open access: yesScientific Reports, 2021
Host–guest materials exhibit great potential applications as an insensitive high-energy–density explosive and low characteristic signal solid propellant.
Yiwen Xiao   +5 more
doaj   +1 more source

Chaotic explosions [PDF]

open access: yesEPL (Europhysics Letters), 2015
We investigate chaotic dynamical systems for which the intensity of trajectories might grow unlimited in time. We show that (i) the intensity grows exponentially in time and is distributed spatially according to a fractal measure with an information dimension smaller than that of the phase space,(ii) such exploding cases can be described by an operator
Altmann, E., Portela, J., Tel, T.
openaire   +3 more sources

A Calculation Method for Ground Shock Effect Induced by Hypervelocity Impact

open access: yesGeofluids, 2022
In the hypervelocity impact event, the strong ground shock effect is induced and may cause damage to underground engineering. The existing experimental methods and calculation procedures have difficulties in estimating the ground shock under complicated ...
Junnan Zhang   +6 more
doaj   +1 more source

Positive and negative role of negative ions in cosmic exploration [PDF]

open access: yesVojnotehnički Glasnik, 2021
Introduction/purpose: At altitudes of 80 to 40 km, while the spacecraft made of duralumin without a thermal-protective coating was descending from the flight orbit at the first and second cosmic velocities, data were obtained on the increase in ...
Leonid I. Gretchikhin
doaj   +1 more source

Study of Crater in the Gobi Desert Induced by Ground Explosion of Large Amounts of TNT Explosive up to 10 Tons

open access: yesShock and Vibration, 2021
Explosion craters on the ground surface induced by contact or near-field explosions have important implications, which can be used to assess blast consequences, guide the design of the explosion, or develop a protective strategy.
Rongzheng Xu   +5 more
doaj   +1 more source

Enhanced decomposition of laminated ammonium perchlorate composite

open access: yesScientific Reports, 2021
In order to improve the thermal decomposition performances of ammonium perchlorate (AP), the laminated AP composite was prepared by ice-template induced self-assembly method.
Shuji Wang   +5 more
doaj   +1 more source

Integration of Safety Aspects in Modeling of Superheated Steam Flash Drying of Tobacco

open access: yesEnergies, 2021
Knowledge of the drying properties of tobacco in high temperatures above 100 °C and its dust are crucial in the design of dryers, both in the optimization of the superheated-steam-drying process and in the correct selection of innovative explosion ...
Robert Adamski   +4 more
doaj   +1 more source

Structural Impact Dynamic Response Characteristics of Offshore Platform Blast Wall in High Temperature Environment

open access: yesShanghai Jiaotong Daxue xuebao, 2021
The blast wall is an important protection facility for offshore platforms, whose anti-explosion performance needs to be focused on. Based on the nonlinear finite element method, the structural dynamic response of the blast wall under the explosion at ...
WANG Rui, XUE Hongxiang, YUAN Yuchao, TANG Wenyong
doaj   +1 more source

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