Numerical Simulation of Spinning Kinetic Energy Projectile Against Reinforced Concrete Target Using ANSYS AUTODYN

2021 ◽  
pp. 329-342
Author(s):  
Ghanshyam Singh Kushwah ◽  
B. V. S. Nagendra Reddy ◽  
Mukesh Kumar ◽  
Pravendra Kumar
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Kinetic Energy ◽  
Concrete Target

scholarly journals Effect of Nonsmooth Nose Surface of the Projectile on Penetration Using DEM Simulation

2017 ◽  
Vol 2017 ◽  
pp. 1-11
Author(s):  
Jing Han ◽  
Dong Li ◽  
Wenhao Wang ◽  
Zhigang Chen
Keyword(s):  
Numerical Simulation ◽  
Kinetic Energy ◽  
Abrupt Change ◽  
Radial Flow ◽  
Normal Pressure ◽  
Penetration Resistance ◽  
Soil Environment ◽  
Dem Simulation ◽  
Interface Friction ◽  
Concrete Target

The nonsmooth body surface of the reptile in nature plays an important role in reduction of resistance and friction when it lives in a soil environment. To consider whether it was feasible for improving the performance of penetrating projectile we investigated the influence of the convex as one of nonsmooth surfaces for the nose of projectile. A numerical simulation study of the projectile against the concrete target was developed based on the discrete element method (DEM). The results show that the convex nose surface of the projectile is beneficial for reducing the penetration resistance greatly, which is also validated by the experiments. Compared to the traditional smooth nose structure, the main reason of difference is due to the local contact normal pressure, which increases dramatically due to the abrupt change of curvature caused by the convex at the same condition. Accordingly, the broken particles of the concrete target obtain more kinetic energy and their average radial flow velocities will drastically increase simultaneously, which is in favor of decreasing the interface friction and the compaction density of concrete target around the nose of projectile.

Progress in Numerical Studies of KE Projectile into Concrete with Mass Loss

2012 ◽  
Vol 188 ◽  
pp. 1-5
Author(s):  
Lei Guo ◽  
Yong He ◽  
Xian Feng Zhang ◽  
Nian Song Zhang ◽  
Chun Xu Pang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Kinetic Energy ◽  
Mass Loss ◽  
Iterative Algorithm ◽  
Advantages And Disadvantages ◽  
Numerical Studies ◽  
Concrete Target ◽  
Element Method

A review on the numerical studies about KE(kinetic energy) penetrator into concrete target with mass loss is presented. There are two main ways to study the mass loss in numerical simulation: finite-element method and abrasion iterative algorithm. For each method, detailed introduction is given at home and abroad. A summary of their research, including their advantages and disadvantages, is described. Finally, some research proposals are given for further study.

scholarly journals Antipenetration Performance of Honeycomb Shelter under Two Repeat Projectile Strikes

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Qifan Wang ◽  
Liusheng Chu ◽  
Jie Li ◽  
Jianhu Sun ◽  
Sheng Luo ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Honeycomb Structure ◽  
Hexagonal Cell ◽  
Damage Area ◽  
Concrete Target

Antipenetration performance of honeycomb shelter under two repeat projectile strikes is investigated via test and numerical simulation. Among them, there are two kinds of test targets: cylindrical honeycomb structure target and reinforced concrete target; a numerical simulation target is a honeycomb-structure target composed of hexagonal honeycomb unit, and the size of the target is the same as that of the honeycomb-structure target in test. The results show that the damage area of the honeycomb-structure target is smaller than that of the reinforced concrete target under projectile strikes with approximately the same velocity. The damage range of the honeycomb-structure target is limited within the hexagonal cell getting contact with projectile left other cells with no damage. During the two repeat projectile strikes, the first projectile will deflect to some extent just as single projectile strike. The deflection of the second projectile is larger and is related to the distance between the strike points of the two projectiles. The results show that honeycomb shelter performs good under two repeat projectile strikes.

scholarly journals Numerical Simulation of the Mechanical Behavior of Fiber-Reinforced Cement Composites Subjected Dynamic Loading

2021 ◽  
Vol 11 (3) ◽  
pp. 1112
Author(s):  
Nikita Belyakov ◽  
Olga Smirnova ◽  
Aleksandr Alekseev ◽  
Hongbo Tan
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Dynamic Loading ◽  
Fiber Reinforced Concrete ◽  
Cement Composites ◽  
Fiber Reinforced ◽  
Lab Experiments ◽  
Reinforced Cement ◽  
Underground Workings ◽  
Concrete Damaged Plasticity

The problem of damage accumulation in fiber-reinforced concrete to structures supporting underground workings and tunnel linings against dynamic loading is insufficiently studied. The mechanical properties were determined and the mechanism of destruction of fiber-reinforced concrete with different reinforcement parameters is described. The parameters of the Concrete Damaged Plasticity model for fiber-reinforced concrete at different reinforcement properties are based on the results of lab experiments. Numerical simulation of the composite concrete was performed in the Simulia Abaqus software package (Dassault Systemes, Vélizy-Villacoublay, France). Modeling of tunnel lining based on fiber-reinforced concrete was performed under seismic loading.

Damage analysis and numerical simulation for failure process of a reinforced concrete arch structure

2005 ◽  
Vol 83 (31-32) ◽  
pp. 2609-2631 ◽  
Author(s):  
X.S. Tang ◽  
J.R. Zhang ◽  
C.X. Li ◽  
F.H. Xu ◽  
J. Pan
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Failure Process ◽  
Damage Analysis ◽  
Arch Structure

Flexural Behavior Finite Element Analysis of CFRP Reinforced Concrete Bridge Deck with Corrosion and Salt Resistance

2014 ◽  
Vol 1004-1005 ◽  
pp. 1474-1477
Author(s):  
Ze Ying Yang ◽  
Jia You Liu ◽  
Yi Dong Zhang ◽  
Jian Bo Qu
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Bridge Deck ◽  
Flexural Behavior ◽  
Concrete Bridge ◽  
Element Analysis ◽  
Strength Performance ◽  
Reinforced Concrete Bridge ◽  
Concrete Bridge Deck ◽  
Prestressed Structures

By numerical simulation and contrasting with experimental conclusions, mechanical models in every loading stage of CFRP reinforced concrete bridge deck were established. The results showed that, numerical simulation results of non-prestressed bridge decks fitted corresponding test results well. The stiffness of prestressed structures had been greatly improved than non-prestressed structures, so the high strength performance of CFRP had been used more effectively.

The Influence of Anode Profiles for Three Dimensions Numerical Simulation of Reinforced Concrete Corrosion Using Boundary Element Method

2013 ◽  
Vol 686 ◽  
pp. 261-265 ◽  
Author(s):  
M. Ihsan ◽  
Syarizal Fonna ◽  
M. Ridha ◽  
Syifaul Huzni ◽  
A.K. Arrifin
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Boundary Element Method ◽  
Boundary Element ◽  
Polarization Curves ◽  
Laplace's Equation ◽  
Concrete Corrosion ◽  
Corrosion Simulation ◽  
Reinforced Concrete Corrosion ◽  
Element Method

The corrosion of structures is needed to be identified early to prevent any severe damage of buildings. The conventional technique such as potential mapping for diagnosing of reinforced concrete corrosion has been used widely in the field. However, the method has limitation such as less accuracy, laborious and time-consuming. This study is conducted to develop boundary element method 3 dimensions by considering polarization curves of anode and cathode for corrosion simulation and analyzed the influences of anode profiles for RC corrosion simulation. In this method, the potential in concrete domain was modeled by Laplace’s equation. The anode and cathode areas were represented by each polarization curves. The numerical simulation result shows that the boundary element method 3 dimensions successfully solved the Laplace’s equation in order to simulate corrosion phenomenon of reinforced concrete. The influences of anode profiles for RC corrosion simulation have been analyzed. Further works are needed to reduce the computational effort of corrosion simulation.

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