Numerical Simulation in the Effect of Ignition Mode and Position on Fragment Velocity of Azimuthal Warhead

2014 ◽  
Vol 494-495 ◽  
pp. 502-505
Author(s):  
Xu Qiang Zhu ◽  
Cheng Jun Song ◽  
Yi Cheng
Keyword(s):  
Numerical Simulation ◽  
Simulation Model ◽  
Radial Direction ◽  
Simulation Analysis ◽  
Velocity Curve ◽  
Cost Ratio ◽  
Practical Application ◽  
Main Charge ◽  
Increasing Trend

To study the effect of ignition mode and position on fragment velocity of azimuthal warhead, a simulation model was established and computed. Simulation analysis results of azimuthal warhead showed that two ignition points mode was more valuable than the three ignition points mode, the fragment velocity curve had increasing trend in 0°~180° radial direction, ignition positions near to the edge of main charge end had the highest performance-cost ratio in the practical application.

Simulation on the Burden Distribution by DEM

2013 ◽  
Vol 313-314 ◽  
pp. 1078-1081
Author(s):  
Ye Sun ◽  
Guo Xi Wu ◽  
Ren Chen ◽  
Li Na Sun ◽  
Hai Feng Li
Keyword(s):  
Numerical Simulation ◽  
Discrete Element Method ◽  
Simulation Model ◽  
Radial Direction ◽  
Surface Profile ◽  
Discrete Element ◽  
Gas Distribution ◽  
Burden Distribution ◽  
Model Based ◽  
Charging Mode

In this paper, a numerical simulation model based on discrete element method (DEM) has been developed to analyze the burden distribution in the Melter gasifier of COREX process. The burden trajectory, the location and the burden surface profile are analyzed in the top charging of melter gasifier. The distribution of ore and coke and the porosity in the radial direction are given under the different charging mode. The results can be used to optimize the charging patterns in order to obtain the reasonable gas distribution.

Reserch of Horizontal Dynamic Stress Distribution on Dynamic Consolidation of Discarded Iron Slag

2011 ◽  
Vol 250-253 ◽  
pp. 2959-2964
Author(s):  
Xiu Guang Song ◽  
Zhi Gang Dou ◽  
Kai Yao ◽  
Yang Yang
Keyword(s):  
Numerical Simulation ◽  
Dynamic Stress ◽  
Simulation Analysis ◽  
Dynamic Compaction ◽  
Experimental Program ◽  
Practical Application ◽  
Iron Slag ◽  
Dynamic Consolidation ◽  
Finite Element Numerical Simulation ◽  
Dynamic Stress Distribution

Dynamic consolidation has been widely used in many engineering fields. But in the use of discarded iron slag filled embankment, because the discarded iron slag is naturally piled up, multi-size particle mixture and backfilling height is relatively high, the effect of simple dynamic compaction is not obvious. This paper, combined with engineering examples, through the dynamic consolidation test, describes the experimental program, arrangement and spacing of tamping point, and matters need to be taken care in construction. It also explains the horizontal effects in consolidation by detection data analysis of waste iron slag roadbed. In this paper, we have established finite element numerical simulation analysis of dynamic consolidation by using FLAC3D. It is available in roadbed practical application and can be reference in similar projects of dynamic consolidation.

Numerical Simulation of ANSYS-LS/DYNA Induced by Double-Edge Ball Tooth Hob Cutter

2010 ◽  
Vol 97-101 ◽  
pp. 3120-3123
Author(s):  
Qing Tan ◽  
Kai Wang ◽  
Yi Min Xia ◽  
Kui Zhang ◽  
Zi Jun Xu
Keyword(s):  
Numerical Simulation ◽  
Plastic Deformation ◽  
Rock Mass ◽  
Simulation Model ◽  
Simulation Analysis ◽  
Material Model ◽  
Invasion Depth ◽  
Rock Breakage ◽  
Double Edge ◽  
Good Consistency

In order to analyse the rock breakage process of double-edge ball tooth hob cutter and get the related curve of intrusive force and invasion depth, the numerical simulation model of double-edge ball tooth hob cutter is accurately established. In the process of interaction between hob cutter and rock mass, the material model is also established, the mechanism of rock fragmentation is carefully researched, the elastic-plastic deformation is seriously studied. Finally, we design an experiment which has a good consistency with the simulation analysis.

Fundamental Examination of Numerical Simulation Model for Pressure Rise due to Underwater Arc

2014 ◽  
Vol 134 (7) ◽  
pp. 604-613 ◽  
Author(s):  
Toshiya Ohtaka ◽  
Tomo Tadokoro ◽  
Masashi Kotari ◽  
Tadashi Amakawa
Keyword(s):  
Numerical Simulation ◽  
Simulation Model ◽  
Pressure Rise

LIFT AND DRAG CORRELATIONS FOR AN AIRFOIL ARRAY THROUGH NUMERICAL SIMULATION ANALYSIS.

2019 ◽  
Author(s):  
Luan Labigalini ◽  
Ricardo Salvo ◽  
Rafael Sene de Lima ◽  
Ismael Marchi Neto ◽  
Rodrigo Corrêa da Silva
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Lift And Drag

Evaluation of an improvement in runoff control by means of a construction of an infiltration sewer pipe under a porous asphalt pavement

1997 ◽  
Vol 36 (8-9) ◽  
pp. 397-402
Author(s):  
Yasuhiko Wada ◽  
Hiroyuki Miura ◽  
Rituo Tada ◽  
Yasuo Kodaka
Keyword(s):  
Numerical Simulation ◽  
Simulation Model ◽  
Asphalt Pavement ◽  
Considerable Effect ◽  
Rainfall Infiltration ◽  
Sewer Pipe ◽  
Porous Asphalt ◽  
Runoff Control

We examined the possibility of improved runoff control in a porous asphalt pavement by installing beneath it an infiltration pipe with a numerical simulation model that can simulate rainfall infiltration and runoff at the porous asphalt pavement. From the results of simulations about runoff and infiltration at the porous asphalt pavement, it became clear that putting a pipe under the porous asphalt pavement had considerable effect, especially during the latter part of the rainfall.

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