SECOND ORDER GODUNOV SPH FOR HIGH VELOCITY IMPACT DYNAMICS

2014 ◽  
Author(s):  
A. Connolly ◽  
L. Iannucci ◽  
R. Hillier ◽  
D. Pope
Keyword(s):  
High Velocity ◽  
Second Order ◽  
Impact Dynamics ◽  
High Velocity Impact ◽  
Velocity Impact

scholarly journals Dynamics of supersonic microparticle impact on elastomers revealed by real–time multi–frame imaging

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
David Veysset ◽  
Alex J. Hsieh ◽  
Steven Kooi ◽  
Alexei A. Maznev ◽  
Kevin A. Masser ◽  
...  
Keyword(s):  
Real Time ◽  
High Velocity ◽  
Space Exploration ◽  
Impact Dynamics ◽  
Post Mortem ◽  
High Velocity Impact ◽  
Imaging Studies ◽  
Velocity Impact ◽  
Glass Spheres ◽  
The Impact

Abstract Understanding high–velocity microparticle impact is essential for many fields, from space exploration to medicine and biology. Investigations of microscale impact have hitherto been limited to post–mortem analysis of impacted specimens, which does not provide direct information on the impact dynamics. Here we report real–time multi–frame imaging studies of the impact of 7 μm diameter glass spheres traveling at 700–900 m/s on elastomer polymers. With a poly(urethane urea) (PUU) sample, we observe a hyperelastic impact phenomenon not seen on the macroscale: a microsphere undergoes a full conformal penetration into the specimen followed by a rebound which leaves the specimen unscathed. The results challenge the established interpretation of the behaviour of elastomers under high–velocity impact.

Effect of strain rate, off-axis loading and high-velocity impact damage on the compressive strength of C/SiC composite

2018 ◽  
Vol 53 (4) ◽  
pp. 535-546 ◽  
Author(s):  
M Altaf ◽  
S Singh ◽  
VV Bhanu Prasad ◽  
Manish Patel
Keyword(s):  
Compressive Strength ◽  
Strain Rate ◽  
High Velocity ◽  
Impact Damage ◽  
The Other ◽  
High Velocity Impact ◽  
Fibre Bundles ◽  
Velocity Impact ◽  
Kink Bands ◽  
Other Hand

The compressive strength of C/SiC composite at different strain rates, off-axis orientations and after high-velocity impact was studied. The compressive strength was found to be 137 ± 23, 130 ± 46 and 162 ± 33 MPa at a strain rate of 3.3 × 10−5, 3.3 × 10−3, 3.3 × 10−3 s−1, respectively. On the other hand, the compressive strength was found to be 130 ± 46, 99 ± 23 and 87 ± 9 MPa for 0°/90°, 30°/60° and 45°/45° fibre orientations to loading direction, respectively. After high-velocity impact, the residual compressive strength of C/SiC composite was found to be 58 ± 26, 44 ± 18 and 36 ± 3.5 MPa after impact with 100, 150 and 190 m/s, respectively. The formation of kink bands in fibre bundles was found to be dominant micro-mechanism for compressive failure of C/SiC composite for 0°/90° orientation. On the other hand, delamination and the fibre bundles rotation were found to be the dominant mechanism for off-axis failure of composite.

scholarly journals Analysis of High Velocity Impact on Hybrid Composite Fan Blades

1980 ◽  
Vol 17 (10) ◽  
pp. 763-766 ◽  
Author(s):  
C. C. Chamis ◽  
J. H. Sinclair
Keyword(s):  
Hybrid Composite ◽  
High Velocity ◽  
High Velocity Impact ◽  
Velocity Impact

Apparatus for investigating the effects of high-velocity impact on polymers

1972 ◽  
Vol 5 (5) ◽  
pp. 812-813
Author(s):  
V. V. Kovriga ◽  
V. N. Chalidze
Keyword(s):  
High Velocity ◽  
High Velocity Impact ◽  
Velocity Impact

Shape optimization of bumper beams under high-velocity impact loads

2015 ◽  
Vol 95 ◽  
pp. 49-60 ◽  
Author(s):  
Niyazi Tanlak ◽  
Fazil O. Sonmez ◽  
Mahmut Senaltun
Keyword(s):  
Shape Optimization ◽  
High Velocity ◽  
Impact Loads ◽  
High Velocity Impact ◽  
Velocity Impact

Crack Propagation and Local Failure Simulation of Reinforced Concrete Subjected to Projectile Impact Using RBSM

2016 ◽  
Author(s):  
Yoshihito Yamamoto ◽  
Soichiro Okazaki ◽  
Hikaru Nakamura ◽  
Masuhiro Beppu ◽  
Taiki Shibata
Keyword(s):  
Reinforced Concrete ◽  
Crack Propagation ◽  
High Velocity ◽  
Failure Modes ◽  
Concrete Structures ◽  
Constitutive Models ◽  
Local Failure ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Projectile Impact

In this paper, numerical simulations of reinforced mortar beams subjected to projectile impact are conducted by using the proposed 3-D Rigid-Body-Spring Model (RBSM) in order to investigate mechanisms of crack propagation and scabbing mode of concrete members under high-velocity impact. The RBSM is one of the discrete-type numerical methods, which represents a continuum material as an assemblage of rigid particle interconnected by springs. The RBSM have advantages in modeling localized and oriented phenomena, such as cracking, its propagation, frictional slip and so on, in concrete structures. The authors have already developed constitutive models for the 3D RBSM with random geometry generated Voronoi diagram in order to quantitatively evaluate the mechanical responses of concrete including softening and localization fractures, and have shown that the model can simulate cracking and various failure modes of reinforced concrete structures. In the target tests, projectile velocity is set 200m/s. The reinforced mortar beams with or without the shear reinforcing steel plates were used to investigate the effects of shear reinforcement on the crack propagation and the local failure modes. By comparing the numerical results with the test results, it is confirmed that the proposed model can reproduce well the crack propagation and the local failure behaviors. In addition, effects of the reinforcing plates on the stress wave and the crack propagation behaviors are discussed from the observation of the numerical simulation results. As a result, it was found that scabbing of reinforced mortar beams subjected to high velocity impact which is in the range of the tests is caused by mainly shear deformation of a beam.

The failed strength of ceramics subjected to high-velocity impact

2008 ◽  
Vol 104 (1) ◽  
pp. 013533 ◽  
Author(s):  
Timothy J. Holmquist ◽  
Gordon R. Johnson
Keyword(s):  
High Velocity ◽  
High Velocity Impact ◽  
Velocity Impact
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