Comparative Performance of Stiffened Sandwich Foam Panels under Impulsive Loading
Publication: Journal of Performance of Constructed Facilities
Volume 27, Issue 5
Abstract
Modeling and numerical simulation of foam sandwich panels subjected to impulsive loading are presented. The sandwich panels consist of steel sheets at front and back with two varieties of foam cores in between. Stiffeners are provided at the back sheet for improved response. The dynamic response of the stiffened steel plate (SSP), sandwich foam panel (SFP), and stiffened sandwich foam panel (SSFP) are compared. The foam material modeling accounts for elastic-plastic behavior with volumetric hardening. The finite element–based numerical simulation for dynamic analysis is performed using a combination of shell and solid elements for sheets and foam, respectively. Central point displacements caused from the impulsive load of peak pressure of 0.7 MPa and lasting for 15 ms applied uniformly to the sandwich panels are studied. The analysis is carried out with an objective of understanding the effects of foam thickness, type of foam, and the stiffener configurations. The results obtained indicate that the SSFP considerably increase the resistance to impulsive loading compared with the SSP and SFP.
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Acknowledgments
The doctoral scholarship received by M. D. Goel from the German Academic Exchange Service, i.e., Deutscher Akademischer Austausch Dienst, in completing the reported investigation is gratefully acknowledged.
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Published In
Journal of Performance of Constructed Facilities
Volume 27 • Issue 5 • October 2013
Pages: 540 - 549
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Aug 25, 2011
Accepted: Feb 8, 2012
Published online: Feb 10, 2012
Published in print: Oct 1, 2013
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