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The three point bending of the Y-frame sandwich beams

Rubino, V. and Deshpande, V. S. and Fleck, N. A. (2010) The three point bending of the Y-frame sandwich beams. International Journal of Mechanical Sciences, 52 (3). pp. 485-494. ISSN 0020-7403. doi:10.1016/j.ijmecsci.2009.11.009.

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Sandwich beams comprising Y-frame and corrugated cores have been manufactured by assembling and brazing together pre-folded AISI type 304 stainless steel sheets. The longitudinal axis of the cores coincides with the axis of the beams. The quasi-static three-point bending response of both simply supported and clamped beams is measured along with the indentation response of the beams placed on a rigid foundation. The investigation reveals that the initial collapse strength of the beams is governed by the indentation of the Y-frame or corrugated core for all beam geometries considered here. The simply supported beams have a softening response beyond the initial peak load while the clamped beams display a hardening response due to the longitudinal stretching of the face-sheets. The experimental investigation reveals that sandwich beams with Y-frame or corrugated cores have comparable responses for each of the loading situations considered. Additional insight into the deformation modes is obtained by three-dimensional finite element (FE) calculations.

Item Type:Article
Related URLs:
URLURL TypeDescription
Rubino, V.0000-0002-4023-8668
Deshpande, V. S.0000-0003-3899-3573
Fleck, N. A.0000-0003-0224-1804
Additional Information:© 2009 Elsevier. Received 2 December 2008, Revised 10 November 2009, Accepted 11 November 2009, Available online 19 November 2009. This work was supported by the Netherlands Institute for Metal Research, project No. MC1.03163, The Optimal Design of Y-core sandwich structures.
Funding AgencyGrant Number
Netherlands Institute for Metal ResearchMC1.03163
Subject Keywords:Sandwich beams; Y-frame core; Three-point bending
Issue or Number:3
Record Number:CaltechAUTHORS:20190918-145942711
Persistent URL:
Official Citation:V. Rubino, V.S. Deshpande, N.A. Fleck, The three-point bending of Y-frame and corrugated core sandwich beams, International Journal of Mechanical Sciences, Volume 52, Issue 3, 2010, Pages 485-494, ISSN 0020-7403, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98740
Deposited By: Vito Rubino
Deposited On:20 Sep 2019 23:14
Last Modified:16 Nov 2021 17:41

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