Honeycomb sandwich panels subjected to combined shock and projectile impact
Author | Ebrahimi, Hamid |
Author | Ghosh, Ranajay |
Author | Mahdi, Elsadig |
Author | Nayeb-Hashemi, Hamid |
Author | Vaziri, Ashkan |
Available date | 2021-07-05T10:58:36Z |
Publication Date | 2016 |
Publication Name | International Journal of Impact Engineering |
Resource | Scopus |
Abstract | Structural response and failure modes of honeycomb sandwich panels subjected to a shock (impulsive pressure) followed by a high velocity projectile impact were investigated using detailed finite element simulations. Performance of sandwich panels was quantified by maximum transverse deflection of the bottom face sheet and core crushing strain along with an investigation of their optimal behavior. Three failure modes were observed in panels - core failure, top face failure, and tearing and detachment from support. Failure maps of honeycomb sandwich panels were constructed to show the failure mode of panels as a function of shock intensity, projectile velocity and panel core relative density. In addition, a limited set of simulations were carried out to study the role of incident angle of projectile on the overall performance of a panel. These simulations showed that maximum deflection occurred for vertically impacting projectiles. However, we found that this did not directly translate to maximum core crushing strain in sandwich panels. The results provide new insight into the performance and failure of sandwich panels under complex dynamic loading conditions, and further highlight the potential of these panels for development of threat-resistant structural systems. 2016 Elsevier Ltd. All rights reserved. |
Sponsor | This work has been supported by the Qatar National Research Fund (QNRF) under Award Number NPRP 5-1298-2-560 . The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the Qatar National Research Fund. |
Language | en |
Publisher | Elsevier Ltd |
Subject | Dynamic response Failure map Projectile impact Sandwich panels Shock loading |
Type | Article |
Pagination | 11-Jan |
Volume Number | 95 |
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Mechanical & Industrial Engineering [1343 items ]