scholarly journals Oblique impacts and friction of HMX and/or TATB-based PBXs

2018 ◽  
Author(s):  
Didier Picart ◽  
Alexandra Junqua-Moullet
Keyword(s):  
Oblique Impacts

The penetration and ricochet of ogive-nosed rigid projectiles obliquely impacting metallic targets

2021 ◽  
pp. 204141962110377
Author(s):  
Yaniv Vayig ◽  
Zvi Rosenberg
Keyword(s):  
Experimental Data ◽  
Numerical Simulations ◽  
Dynamic Pressure ◽  
Oblique Impacts ◽  
Simulation Results ◽  
The Impact ◽  
Penetration Depths ◽  
Resistance To Penetration ◽  
Good Agreement

A large number of 3D numerical simulations were performed in order to follow the trajectory changes of rigid CRH3 ogive-nosed projectiles, impacting semi-infinite metallic targets at various obliquities. These trajectory changes are shown to be related to the threshold ricochet angles of the projectile/target pairs. These threshold angles are the impact obliquities where the projectiles end up moving in a path parallel to the target’s face. They were found to depend on a non-dimensional entity which is equal to the ratio between the target’s resistance to penetration and the dynamic pressure exerted by the projectile upon impact. Good agreement was obtained by comparing simulation results for these trajectory changes with experimental data from several published works. In addition, numerically-based relations were derived for the penetration depths of these ogive-nosed projectiles at oblique impacts, which are shown to agree with the simulation results.

Component and Full Scale Tests for Suspension Model Validation

2009 ◽  
Author(s):  
Pradeep Mohan ◽  
Dhafer Marzougui ◽  
Cing-Dao Kan ◽  
Kenneth Opiela
Keyword(s):  
Full Scale ◽  
Transportation Safety ◽  
Fe Model ◽  
George Washington ◽  
Model Library ◽  
Safety Research ◽  
Oblique Impacts ◽  
Full Scale Tests ◽  
Suspension Model ◽  
Roadside Hardware

The National Crash Analysis Center (NCAC) at the George Washington University (GWU) has been developing and maintaining a public domain library of LS-DYNA finite element (FE) vehicle models for use in transportation safety research. The recent addition to the FE model library is the 2007 Chevrolet Silverado FE model. This FE model will be extensively used in roadside hardware safety research. The representation of the suspension components and its response in oblique impacts into roadside hardware are critical factors influencing the predictive capability of the FE model. To improve the FE model fidelity and applicability to the roadside hardware impact scenarios it is important to validate and verify the model to multitude of component and full scale tests. This paper provides detailed description of the various component and full scale tests that were performed, specifically, to validate the suspension model of the 2007 Chevrolet Silverado FE model.

scholarly journals Analysis of occupant kinematics and dynamics in nearside oblique impacts

2016 ◽  
Vol 17 (sup1) ◽  
pp. 86-92 ◽  
Author(s):  
F. J. López-Valdés ◽  
O. Juste-Lorente ◽  
M. Maza-Frechin ◽  
B. Pipkorn ◽  
C. Sunnevang ◽  
...  
Keyword(s):  
Kinematics And Dynamics ◽  
Oblique Impacts ◽  
Occupant Kinematics

Flow-field center migration during vertical and oblique impacts

2006 ◽  
Vol 33 (1-12) ◽  
pp. 35-44 ◽  
Author(s):  
Jennifer L.B. Anderson ◽  
Peter H. Schultz
Keyword(s):  
Flow Field ◽  
Field Center ◽  
Oblique Impacts

Australian impact cratering record: Updates and recent discoveries

2021 ◽  
Author(s):  
Raiza R. Quintero ◽  
Aaron J. Cavosie ◽  
Morgan A. Cox ◽  
Katarina Miljković ◽  
Allison Dugdale
Keyword(s):  
First Generation ◽  
Ore Deposits ◽  
Impact Cratering ◽  
Accessory Minerals ◽  
Asteroid Impact ◽  
Shock Deformation ◽  
Structure Recognition ◽  
Deformation Phase ◽  
Oblique Impacts

ABSTRACT There are currently 31 confirmed structures of impact origin in Australia. More than 49 additional structures have been proposed to have formed due to asteroid impact but await confirmation. Many discoveries have been made in Australia in the time since the last comprehensive review of the Australian impact cratering record was published in a peer-reviewed journal in 2005. These include further expanding the record of confirmed craters, and providing new insights into a variety of impact-related processes, such as shock deformation, phase transitions in accessory minerals, new impact age determinations, studies of oblique impacts, and more. This update is a review that focuses principally on summarizing discoveries made since 2005. Highlights since then include confirmation of five new Australian impact structures, identification of Earth’s oldest recognized impact structure, recognition of shock deformation in accessory minerals, discovery of the high-pressure phase reidite in Australia, determination of the links between impact craters and some ore deposits, and publication of the first generation of numerical hydrocode models for some Australian craters.

Sign in / Sign up

Export Citation Format

Share Document