Optimising GPR time‐zero adjustment and two‐way travel time wavelet measurements using a realistic 3D numerical model

2021 ◽  
Author(s):  
Hossain Zadhoush ◽  
Antonios Giannopoulos
Keyword(s):  
Numerical Model ◽  
Travel Time ◽  
Time Zero ◽  
3D Numerical Model

Research Regarding the Effects of 120 mm HE Mortar Bombs on Advanced Materials

2021 ◽  
Vol 42 ◽  
pp. 128-134
Author(s):  
Daniela Pintilie ◽  
Iuliana Florina Pană ◽  
Adrian Malciu ◽  
Constantin Puică ◽  
Cristina Pupăză
Keyword(s):  
Experimental Data ◽  
Numerical Model ◽  
Initial Velocity ◽  
High Explosive ◽  
Numerical Approach ◽  
Advanced Materials ◽  
Physical Mechanisms ◽  
Shock Wave Generation ◽  
3D Numerical Model ◽  
Experimental Trials

High Explosive Mortar bombs are used on the battlefield for destroying the manpower, non-armoured equipment and shelters. The paper describes an original experimental and numerical approach regarding the potential threats caused by the detonation of 120 mm HE mortar bombs. The evaluation of the bomb effect presumes the fulfillment of experimental trials that focus on two physical mechanisms which appear after the detonation of the cased high explosive. These mechanisms are the shock wave generation and the fragments propulsion, which were also studied by a numerical model that provides results over the bomb fragmentation mode. The novelty of the paper consists in the calibrated 3D numerical model confirmed by the experimental data, which provides information over the fragmentation process of the case and the initial velocity of its fragments, proving that the main threat of this type of ammunition is the effect through metal fragments. The results of numerical simulation and experimental data are used for their comparative analysis and the assessment of the phenomena.

On the role of fluid infiltration into gravel dunes — Using a 3D numerical model

2016 ◽  
Vol 380 ◽  
pp. 231-244 ◽  
Author(s):  
Gerhard Bartzke ◽  
Lina Podszun ◽  
Katrin Huhn
Keyword(s):  
Numerical Model ◽  
Fluid Infiltration ◽  
3D Numerical Model

Research on UG Overturning Characteristic of 75t Iron Ladle

2012 ◽  
Vol 479-481 ◽  
pp. 2037-2040
Author(s):  
Shan Li ◽  
Bo Gao ◽  
Yu Qi Wang ◽  
Lei Wang
Keyword(s):  
Finite Element ◽  
Numerical Model ◽  
Water Capacity ◽  
The Reformation ◽  
3D Numerical Model ◽  
Overturning Moment

The iron ladle is a kind of large metallurgy equipments and used for collecting and carrying iron water. According to the factual demand of produce, some corporation wanted to enlarge the capacity of the idle from 65t to 75t only by increasing the height of ladle. This paper is aimed at the changing idle which the capacity is 75t and built up its 3D numerical model. According to the constant of the iron water capacity, it used the method of modeling to find the angle of the ladle taphole and made sure the ladle couldn't overturn automatically by studying the process of overturning. Then this paper worked out the overturning moment so that it could provide mechanics data for the analysis of the finite element and the reformation of the corporation.

Application of 3D Numerical Model and Intelligent Systems in Discharge Coefficient Estimation of Combined Weir-Gate

2020 ◽  
Vol 47 (4) ◽  
pp. 537-549
Author(s):  
Nima Aein ◽  
Mohsen Najarchi ◽  
Seyyed Mohammad Mirhosseini Hezaveh ◽  
Mohammad Mehdi NajafiZadeh ◽  
Ehsanollah Zeighami
Keyword(s):  
Numerical Model ◽  
Intelligent Systems ◽  
Discharge Coefficient ◽  
Coefficient Estimation ◽  
3D Numerical Model
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