High Velocity Impact Calculations in Three Dimensions

1977 ◽  
Vol 44 (1) ◽  
pp. 95-100 ◽  
Author(s):  
G. R. Johnson
Keyword(s):  
High Velocity ◽  
Equations Of Motion ◽  
Three Dimensional ◽  
Three Dimensions ◽  
Material Strength ◽  
Large Strains ◽  
Strain Rates ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Elastic Stresses

A three-dimensional analysis is presented for high velocity impact problems. A Lagrangian finite-element technique is formulated for tetrahedron elements subjected to large strains and displacements. The effects of material strength and compressibility are included to account for elastic-plastic flow and wave propagation. The strains and strain rates in each element are determined from the displacements and velocities of the nodes. The strains, strain rates, and material properties are used to determine the elastic stresses, plastic deviator stresses, hydrostatic pressure, and artificial viscosity. The stresses are equated to concentrated forces acting on concentrated masses at the nodes, and the nodal equations of motion are numerically integrated. Illustrative examples are also included.

scholarly journals Three-dimensional imaging of crack growth in L chondrites after high-velocity impact experiments

2019 ◽  
Vol 177 ◽  
pp. 104690 ◽  
Author(s):  
Tatsuhiro Michikami ◽  
Axel Hagermann ◽  
Akira Tsuchiyama ◽  
Hirotaka Yamaguchi ◽  
Terunori Irie ◽  
...  
Keyword(s):  
Crack Growth ◽  
High Velocity ◽  
Three Dimensional ◽  
High Velocity Impact ◽  
Three Dimensional Imaging ◽  
Velocity Impact ◽  
Impact Experiments

THE MECHANISM OF SHOCK COMMINUTION OF 3D C/SIC COMPOSITE SUBJECTED TO HIGH VELOCITY IMPACT

2008 ◽  
Vol 22 (09n11) ◽  
pp. 1510-1517
Author(s):  
QINGMING ZHANG ◽  
FENGLEI HUANG ◽  
LI CHEN ◽  
LIMING HAN ◽  
JINZHU LI
Keyword(s):  
Experimental Investigation ◽  
High Velocity ◽  
Ceramic Matrix Composite ◽  
Three Dimensional ◽  
Ceramic Matrix ◽  
Impact Point ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Sic Ceramic ◽  
The Impact

In this paper, experimental investigation and theoretical analysis are carried out in an attempt to study the response of SiC ceramic matrix composite reinforced with three dimensional braided fabric(3 D C/SiC ) under high velocity impact. The results show that 3 D C/SiC composite will be turned into comminution if the pressure of the impact point resulted from the projectile impacting 3 D C/SiC composite sample is larger than 780Mpa. Based on the analysis of the mechanism of composite comminution, a theoretical model has been developed.

A three-dimensional Eulerian method for the numerical simulation of high-velocity impact problems

2014 ◽  
Vol 23 (3) ◽  
pp. 034601
Author(s):  
Shi-Yu Wu ◽  
Kai-Xin Liu ◽  
Qian-Yi Chen
Keyword(s):  
Numerical Simulation ◽  
High Velocity ◽  
Three Dimensional ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Eulerian Method ◽  
Impact Problems

scholarly journals Investigation of the Ballistic Performance of GFRP Laminate under 150 m/s High-Velocity Impact: Simulation and Experiment

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 604
Author(s):  
Fengyan Chen ◽  
Yong Peng ◽  
Xuanzhen Chen ◽  
Kui Wang ◽  
Zhixiang Liu ◽  
...  
Keyword(s):  
High Velocity ◽  
Three Dimensional ◽  
Test Method ◽  
Stacking Sequence ◽  
Equal Proportion ◽  
High Velocity Impact ◽  
Ballistic Performance ◽  
Velocity Impact ◽  
Ballistic Resistance ◽  
Simulation And Experiment

The ballistic resistance of GFRP laminates subjected to high-velocity impact was studied. Based on the damage situation of GFRP laminate observed from the single-stage gas gun testing, the three-dimensional (3D) model combining strain rate effect and Hashin failure criterion was established, and the result presented good agreement between the simulation and experiment. Three factors, including layer angle, stacking sequence and proportion of different layer angles, were taken into consideration in the models. An orthogonal test method was used for the analysis, which can reduce the number of simulations effectively without sacrificing the accuracy of the result. The result indicated a correlation between the ballistic resistance and layouts of GFRP laminates, on which the stacking sequence contributed stronger influence. What was more, the laminate with layer angles 0°/90° and ±45° presented greater ballistic resistance than the other angle pairs, and adopting an equal proportion of different layer angles is helpful for GFRP laminates to resist impact as well.

High velocity impact performance of three-dimensional woven composites

2012 ◽  
Vol 47 (7) ◽  
pp. 419-431 ◽  
Author(s):  
Pavani Udatha ◽  
Ch V Sesha Kumar ◽  
Nithin S Nair ◽  
Niranjan K Naik
Keyword(s):  
High Velocity ◽  
Three Dimensional ◽  
Woven Composites ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Impact Performance

scholarly journals Discussion: “High Velocity Impact Calculations in Three Dimensions” (Johnson, G. R., 1977, ASME J. Appl. Mech., 44, pp. 95–100)

1977 ◽  
Vol 44 (4) ◽  
pp. 793-794 ◽  
Author(s):  
J. O. Hallquist ◽  
R. W. Werne ◽  
M. L. Wilkins
Keyword(s):  
High Velocity ◽  
Three Dimensions ◽  
High Velocity Impact ◽  
Velocity Impact
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