A Method for Estimation of Blast Performance of RDX‐IPN‐Al Annular Thermobaric Charges

2021 ◽  
Author(s):  
Ovidiu G. Iorga ◽  
Tudor V. Tigănescu ◽  
Muhamed Sućeska ◽  
Traian Rotariu ◽  
Alexandru Marin ◽  
...  
Keyword(s):  
Blast Performance

Modeling of Near-Field Blast Performance

2013 ◽  
Author(s):  
Barrie E. Homan ◽  
Matthew M. Biss ◽  
Kevin L. McNesby
Keyword(s):  
Near Field ◽  
Blast Performance

Numerical investigation on the dynamic response of foam-filled corrugated core sandwich panels subjected to air blast loading

2017 ◽  
Vol 21 (3) ◽  
pp. 838-864 ◽  
Author(s):  
Yuansheng Cheng ◽  
Tianyu Zhou ◽  
Hao Wang ◽  
Yong Li ◽  
Jun Liu ◽  
...  
Keyword(s):  
Total Energy ◽  
Energy Absorption ◽  
Sandwich Panels ◽  
Blast Loading ◽  
Front Face ◽  
Back Side ◽  
Air Blast ◽  
Foam Filled ◽  
Blast Performance ◽  
Air Blast Loading

The ANSYS/Autodyn software was employed to investigate the dynamic responses of foam-filled corrugated core sandwich panels under air blast loading. The panels were assembled from metallic face sheets and corrugated webs, and PVC foam inserts with different filling strategies. To calibrate the proposed numerical model, the simulation results were compared with experimental data reported previously. The response of the panels was also compared with that of the empty (unfilled) sandwich panels. Numerical results show that the fluid–structure interaction effect was dominated by front face regardless of the foam fillers. Foam filling would reduce the level of deformation/failure of front face, but did not always decrease the one of back face. It is found that the blast performance in terms of the plastic deflections of the face sheets can be sorted as the following sequence: fully filled hybrid panel, front side filled hybrid panel, back side filled hybrid panel, and the empty sandwich panel. Investigation into energy absorption characteristic revealed that the front face and core web provided the most contribution on total energy absorption. A reverse order of panels was obtained when the maximization of total energy dissipation was used as the criteria of blast performance.

Mesh area vis-à-vis blast performance in a limestonequarry of the Philippines

Fragblast ◽  
2005 ◽  
Vol 9 (4) ◽  
pp. 219-232 ◽  
Author(s):  
P. Rai ◽  
F. L. Imperial
Keyword(s):  
The Philippines ◽  
Blast Performance

Blast performance of RC panels with waste steel fibers

2015 ◽  
Vol 94 ◽  
pp. 536-546 ◽  
Author(s):  
Marek Foglar ◽  
Radek Hajek ◽  
Martin Kovar ◽  
Jiří Štoller
Keyword(s):  
Steel Fibers ◽  
Blast Performance

Dynamic Response of Metallic Y-Frame Core Sandwich Panels Subjected to Air Blast Loading: Numerical Investigation

2019 ◽  
Author(s):  
Ting Liu ◽  
Yuansheng Cheng ◽  
Jun Liu ◽  
Ganchao Chen ◽  
Changhai Chen ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Sandwich Panel ◽  
Sandwich Panels ◽  
Face Sheet ◽  
Front Face ◽  
Sandwich Plates ◽  
Air Blast ◽  
Solid Plate ◽  
Blast Performance ◽  
Air Blast Loading

Abstract In this paper, the dynamic response of metallic Y-frame core sandwich plates subjected to air blast loading was investigated by employing the LS-DYNA software. The blast wave was generated by the directly detonation of TNT explosives. The deformation/failure modes and associated structural response were identified and analyzed in detail. Main attention was paid to explore the effects of face sheet thicknesses and core web thickness on the deformation response of Y-frame core sandwich plates. A comparison on the blast performance were drawn among the Y-frame core sandwich panel, corrugated core sandwich panel and solid plate in equal areal mass. Numerical results revealed that the Y-frame core sandwich panel experienced indent deformation in the front face, strut buckling in the core and large bending deformation in the back face under the stand-off distance of 100 mm. Increasing the face sheets and core web thicknesses could improve the blast performance of Y-frame core sandwich panels. The deflections of face sheets were sensitive to the variation of front face sheet and core thicknesses. Moreover, Y-frame sandwich panel has comparable anti-blast capacity with the corrugated counterparts and exhibits superior blast resistance than the solid plate.

scholarly journals A Comprehensive Evaluation Method of Bench Blast Performance in Open-Pit Mine

2020 ◽  
Vol 10 (16) ◽  
pp. 5398
Author(s):  
Mingqing Liu ◽  
Jun Liu ◽  
Mengyang Zhen ◽  
Futian Zhao ◽  
Zhimin Xiao ◽  
...  
Keyword(s):  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Open Pit ◽  
Effect Evaluation ◽  
Empirical Methods ◽  
Blasting Operation ◽  
Comprehensive Evaluation Method ◽  
Blast Design ◽  
Blast Performance

In blasting operation, some undesirable impacts, such as fly-rock, fragmentation, and back break, are induced. If the blasting design is not optimized, these mentioned impacts would reduce the blasting efficiency. To improve and optimize the blast design, blasting effect evaluation is essential. Due to the complexity of interactions among blasting parameters, empirical methods may not be appropriate for blast design optimization. A two-level mathematical model based on fuzzy mathematics, is proposed in this work. In total, 11 typical parameters were chosen and classified into three groups. The blasting effect is evaluated from three aspects, and then the comprehensive evaluation is given. A blasting effect evaluation system was developed based on the mentioned method on the platform of VC++. Some other techniques, such as image processing, were integrated into the system, which allowed for obtaining all of the parameters rapidly and conveniently. The system was applied in practical bench blast engineering. The results obtained from the system can provide effective information for the optimization of the next blast design.

scholarly journals Blast performance of a sacrificial cladding with composite tubes for protection of civil engineering structures

2014 ◽  
Vol 65 ◽  
pp. 131-146 ◽  
Author(s):  
W. Van Paepegem ◽  
S. Palanivelu ◽  
J. Degrieck ◽  
J. Vantomme ◽  
B. Reymen ◽  
...  
Keyword(s):  
Civil Engineering ◽  
Composite Tubes ◽  
Engineering Structures ◽  
Civil Engineering Structures ◽  
Blast Performance

Detection algorithm improving V-BLAST performance over error propagation

2003 ◽  
Vol 39 (13) ◽  
pp. 1007 ◽  
Author(s):  
Cong Shen ◽  
Hairuo Zhuang ◽  
Lin Dai ◽  
Shidong Zhou
Keyword(s):  
Error Propagation ◽  
Detection Algorithm ◽  
Blast Performance
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