Abstract
Local effects occurring near junctions between different cores in sandwich structures subjected to axial and transverse forces and bending moments are considered. These local effects are associated with large stress concentrations in the faces and the core near the core junctions. The local effects are studied for two typical cases representing industrial applications. Finite element analyses show that significant stress concentrations are induced near core junctions subjected to transverse, tension/compression as well as bending loads. Finally, improved designs of core junctions are discussed.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Zenkert D. (ed.), The Handbook of Sandwich Construction, EMAS Publishing, London, 1997.
Shenoi R.A. and Wellicome J.F. (eds), Composite Materials in Maritime Structures, Cambridge University Press, 1993.
Zenkert, D., “Effect of manufacture-induced flaws on the strength of foam core sandwich beams”, in Proceedings of International Symposium on Damage Detection and Quality Assurance in Composite Materials, ASTM Special Technical Publication 1128, 1992, pp. 137–151.
Skvortsov, V. and Thomsen, O.T., “Analytical estimates for the stresses in face sheets of sandwich panels at the junctions between different core materials”, Proceedings of the 6-th International Conference on Sandwich Structures (ICSS-6), Ft. Lauderdale, Florida, 2003, CRC Press, New York, 2003, pp. 501–509.
Bozhevolnaya, E., Thomsen, O.T., Kildegaard, A. and Skvortsov, V., “Local effects across core junctions in sandwich panels”, Composites. Part B: Engineering, Vol. 34, 2003, pp. 509–517.
Bozhevolnaya, E., Lyckegaard., L., Thomsen, O.T. and Skvortsov, V., “Local effects in the vicinity of inserts in sandwich panels”, Composites. Part B: Engineering, Vol. 35, 2004, pp. 619–627.
Pageau, S.S., Joseph, P.F. and Biggers, S.B., Jr., “The order of stress singularities for bonded and disbonded three-material junctions”, International Journal of Solids and Structures, Vol. 31,No. 21, 1994, pp. 2979–2997.
Ribeiro-Ayeh, S. and Hallström, S., “Strength prediction of beams with bimaterial butt joints”, Engineering Fracture Mechanics, Vol. 70, 2003, pp. 1491–1507.
Technical Manual H-grade: Divinycell®, DIAB Group, 2003.
Bozhevolnaya, E., Lyckegaard, A., Jakobsen, L. and Thomsen, O.T., Sandwich Panel and a Method of Producing a Sandwich Panel, Application No./Patent No. 03027020.1, 2003.
Bozhevolnaya, E. and Thomsen, O.T., “Structurally graded core junctions in sandwich beams: Quasi static loading conditions”, Composite Structures, in press.
Bozhevolnaya, E. and Thomsen, O.T., “Structurally graded core junctions in sandwich beams: Fatigue loading conditions”, Composite Structures, in press.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Springer
About this paper
Cite this paper
Bozhevolnaya, E., Lyckegaard, A., Thomsen, O.T. (2005). Local Effects Induced by Core Junctions in Sandwich Beams under General Loading Conditions. In: Thomsen, O., Bozhevolnaya, E., Lyckegaard, A. (eds) Sandwich Structures 7: Advancing with Sandwich Structures and Materials. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3848-8_7
Download citation
DOI: https://doi.org/10.1007/1-4020-3848-8_7
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-3444-2
Online ISBN: 978-1-4020-3848-8
eBook Packages: EngineeringEngineering (R0)