Oblique impacts of metallic plates in an elastic formulation

1976 ◽  
Vol 16 (5) ◽  
pp. 815-820
Author(s):  
V. V. Efromov
Keyword(s):  
Oblique Impacts ◽  
Metallic Plates

FEA Design and Misfit Minimization for In-Depth Flaw Characterization in Metallic Plates With Eddy Current Nondestructive Testing

2009 ◽  
Vol 45 (3) ◽  
pp. 1506-1509 ◽  
Author(s):  
M. Cacciola ◽  
S. Calcagno ◽  
G. Megali ◽  
F.C. Morabito ◽  
D. Pellicano ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
Eddy Current ◽  
Flaw Characterization ◽  
Metallic Plates

Flutter of Perforated Metallic Plates Repaired with Cross-Ply Composite Patches

2009 ◽  
Vol 417-418 ◽  
pp. 709-712
Author(s):  
Ali Amin Yazdi ◽  
Jalil Rezaeepazhand
Keyword(s):  
Laminated Composite ◽  
Material Anisotropy ◽  
Perforated Plates ◽  
Closed Form Solutions ◽  
Finite Element Software ◽  
Composite Patch ◽  
Numerical Studies ◽  
Flutter Analysis ◽  
Flutter Boundary ◽  
Metallic Plates

This study investigates the application of laminated composite patches for enhancement of flutter behavior of perforated metallic plates repaired with an external composite patch. Due to material anisotropy and discontinuity in geometry involved in flutter analysis of repaired plates, closed form solutions are practically unobtainable. Numerical studies using commercial finite element software were conducted to investigate the effects of variation in lamination parameters on the flutter boundary of perforated plates repaired with cross-ply composite patches. Both ply-level and sub-laminate level configurations are investigated. Presented results illustrate that flutter boundaries of perforated plates can be changed by choosing proper stacking sequence for composite patches.

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.

scholarly journals A three-stage model for the perforation of finite metallic plates by long rods at high velocities

2019 ◽  
Vol 15 (3) ◽  
pp. 409-418 ◽  
Author(s):  
Yu He ◽  
Liu-yun Xu ◽  
He-ming Wen ◽  
Zheng-cao Lu
Keyword(s):  
Stage Model ◽  
Metallic Plates

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

scholarly journals Casimir torque between corrugated metallic plates

2008 ◽  
Vol 41 (16) ◽  
pp. 164019 ◽  
Author(s):  
Robson B Rodrigues ◽  
Paulo A Maia Neto ◽  
Astrid Lambrecht ◽  
Serge Reynaud
Keyword(s):  
Metallic Plates

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.

Sign in / Sign up

Export Citation Format

Share Document