Effect of Physical Nonlinearity on Local Buckling in Sandwich Beams

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Koissin, Vitaly and Shipsha, Andrey and Skvortsov, Vitaly (2010) Effect of Physical Nonlinearity on Local Buckling in Sandwich Beams. Journal of Sandwich Structures & Materials, 12 (4). pp. 477-494. ISSN 1099-6362

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Abstract:This article deals with experimental, theoretical, and FE characterization of the local buckling in foam-core sandwich beams. In the theoretical approach, this phenomena is considered in a periodic formulation (unbounded wrinkle wave); a nonlinear stress—strain response of the face material is accounted for. In the FE approach, nonlinearity of the core material is also modeled. Full-field strain measurement is employed in the tests showing that the commonly used edgewise compression set-up can cause premature waviness of the faces, and therefore, nonlinear local deformations in the core layer.
Item Type:Article
Copyright:© 2010 Sage
Faculty:
Engineering Technology (CTW)
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Link to this item:http://purl.utwente.nl/publications/75525
Official URL:http://dx.doi.org/10.1177/1099636209104521
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