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Localised Effects in Sandwich Structures with Internal Core Junctions:Modelling and Experimental Characterisation of Load Response, Failure and Fatigue

  • Martin Johannes
  • Ole Thybo Thomsen

Abstract

The objective is to provide an overview of the mechanisms which determine the occurrence and severity of localized bending effects in sandwich structures. It is known from analytical and numerical modelling that local effects lead to an increase of the face bending stresses as well as the core shear and transverse normal stresses. The modelling and experimental characterisation of local effects in sandwich structures will be addressed based on the simple and generic case of sandwich structures with internal core junctions under general shear, bending and in-plane loading conditions. The issue of failure and fatigue phenomena induced by the presence of core junctions will be discussed in detail, with the inclusion of recent theoretical and experimental results.

Keywords

Failure Load Face Sheet Failure Behaviour Sandwich Beam Foam Core 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgment

The work presented was supported by:

The Innovation Consortium “Integrated Design and Processing of Lightweight Composite and Sandwich Structures”(abbreviated “KOMPOSAND”) funded by the Danish Ministry of Science, Technology and Innovation and the industrial partners Composhield A.

S, DIAB ApS (DIAB Group), Fiberline Composites A/S, LM Glasfiber A/S and Vestas Wind Systems A/S.

US Navy, Office of Naval Research (ONR), Grant/Award No. N000140710227:“Influence of Local Effects in Sandwich Structures under General Loading Conditions &Ballistic Impact on Advanced Composite and Sandwich Structures”. The ONR program manager was Dr. Yapa Rajapakse.

The support received is gratefully acknowledged.

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringAalborg UniversityAalborg EastDenmark

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