scholarly journals Numerical analysis of high velocity impacts on unidirectional laminates

2014 ◽  
Vol 107 ◽  
pp. 629-634 ◽  
Author(s):  
J. Pernas-Sánchez ◽  
J.A. Artero-Guerrero ◽  
J. Zahr Viñuela ◽  
D. Varas ◽  
J. López-Puente
Keyword(s):  
Numerical Analysis ◽  
High Velocity ◽  
High Velocity Impacts

scholarly journals Numerical Evaluation of a Light-Gas Gun Facility for Impact Test

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
C. Rahner ◽  
H. A. Al-Qureshi ◽  
D. Stainer ◽  
D. Hotza ◽  
M. C. Fredel
Keyword(s):  
High Velocity ◽  
Numerical Evaluation ◽  
Impact Test ◽  
Experimental Tests ◽  
Reservoir Pressure ◽  
One Stage ◽  
Gas Gun ◽  
Numerical Predictions ◽  
High Velocity Impacts ◽  
Different Types

Experimental tests which match the application conditions might be used to properly evaluate materials for specific applications. High velocity impacts can be simulated using light-gas gun facilities, which come in different types and complexities. In this work different setups for a one-stage light-gas gun facility have been numerically analyzed in order to evaluate their suitability for testing materials and composites used as armor protection. A maximal barrel length of 6 m and a maximal reservoir pressure of a standard industrial gas bottle (20 MPa) were chosen as limitations. The numerical predictions show that it is not possible to accelerate the projectile directly to the desired velocity with nitrogen, helium, or hydrogen as propellant gas. When using a sabot corresponding to a higher bore diameter, the necessary velocity is achievable with helium and hydrogen gases.

Design and finite element study of Kevlar based combat helmet for protection against high-velocity impacts

2021 ◽  
Author(s):  
Clifton Stephen ◽  
B. Shivamurthy ◽  
Rajiv Selvam ◽  
Sai Rohit Behara ◽  
Abdel-Hamid I. Mourad ◽  
...  
Keyword(s):  
Finite Element ◽  
High Velocity ◽  
Finite Element Study ◽  
High Velocity Impacts ◽  
Element Study

Dynamics and structural transformations of carbon onion-like structures under high-velocity impacts

Carbon ◽  
2021 ◽  
Author(s):  
M.L. Pereira Júnior ◽  
W.F. da Cunha ◽  
R.T. de Sousa Junior ◽  
G.D. Amvame Nze ◽  
D.S. Galvão ◽  
...  
Keyword(s):  
High Velocity ◽  
Structural Transformations ◽  
Carbon Onion ◽  
High Velocity Impacts

The structural and dynamical aspects of boron nitride nanotubes under high velocity impacts

2016 ◽  
Vol 18 (22) ◽  
pp. 14776-14781 ◽  
Author(s):  
Leonardo D. Machado ◽  
Sehmus Ozden ◽  
ChandraSekhar Tiwary ◽  
Pedro A. S. Autreto ◽  
Robert Vajtai ◽  
...  
Keyword(s):  
Boron Nitride ◽  
High Velocity ◽  
Boron Nitride Nanotubes ◽  
High Velocity Impacts

This communication report is a study on the structural and dynamical aspects of boron nitride nanotubes (BNNTs) shot at high velocities (∼5 km s−1) against solid targets.

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