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AuthorEbrahimi, Hamid
AuthorGhosh, Ranajay
AuthorMahdi, Elsadig
AuthorNayeb-Hashemi, Hamid
AuthorVaziri, Ashkan
Available date2021-07-05T10:58:36Z
Publication Date2016
Publication NameInternational Journal of Impact Engineering
ResourceScopus
URIhttp://dx.doi.org/10.1016/j.ijimpeng.2016.04.009
URIhttp://hdl.handle.net/10576/21139
AbstractStructural 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.
SponsorThis 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.
Languageen
PublisherElsevier Ltd
SubjectDynamic response
Failure map
Projectile impact
Sandwich panels
Shock loading
TitleHoneycomb sandwich panels subjected to combined shock and projectile impact
TypeArticle
Pagination11-Jan
Volume Number95
dc.accessType Abstract Only


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