Stability of the face layer of sandwich beams with sub-interface damage in the foam core

V. Koysin, Vitaly Skvortsov, Andrey Shipsha

Research output: Contribution to journalArticleAcademic

11 Citations (Scopus)

Abstract

This paper addresses the effect of local indentation/impact damage on the bearing capacity of foam core sandwich beams subjected to edgewise compression. The considered damage is in a form of through-width zone of crushed core accompanied by a residual dent in the face sheet. It is shown that such damage causes a significant reduction of compressive strength and stiffness of sandwich beams. Analytical solutions estimating the Euler’s local buckling load are obtained for two typical modes of damage. These solutions are validated through experimental investigation of three sandwich configurations. The results of the analytical analysis are in agreement with the experimental data.
Original languageUndefined
Pages (from-to)507-518
JournalComposite structures
Volume78
Issue number4
DOIs
Publication statusPublished - 2007

Keywords

  • Euler’s load
  • Local damage
  • Local buckling
  • Sandwich structure
  • IR-75529
  • Residual dent
  • Low-velocity impact
  • Crushed foam core
  • Indentation

Cite this

Koysin, V. ; Skvortsov, Vitaly ; Shipsha, Andrey. / Stability of the face layer of sandwich beams with sub-interface damage in the foam core. In: Composite structures. 2007 ; Vol. 78, No. 4. pp. 507-518.
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abstract = "This paper addresses the effect of local indentation/impact damage on the bearing capacity of foam core sandwich beams subjected to edgewise compression. The considered damage is in a form of through-width zone of crushed core accompanied by a residual dent in the face sheet. It is shown that such damage causes a significant reduction of compressive strength and stiffness of sandwich beams. Analytical solutions estimating the Euler’s local buckling load are obtained for two typical modes of damage. These solutions are validated through experimental investigation of three sandwich configurations. The results of the analytical analysis are in agreement with the experimental data.",
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Stability of the face layer of sandwich beams with sub-interface damage in the foam core. / Koysin, V.; Skvortsov, Vitaly; Shipsha, Andrey.

In: Composite structures, Vol. 78, No. 4, 2007, p. 507-518.

Research output: Contribution to journalArticleAcademic

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T1 - Stability of the face layer of sandwich beams with sub-interface damage in the foam core

AU - Koysin, V.

AU - Skvortsov, Vitaly

AU - Shipsha, Andrey

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N2 - This paper addresses the effect of local indentation/impact damage on the bearing capacity of foam core sandwich beams subjected to edgewise compression. The considered damage is in a form of through-width zone of crushed core accompanied by a residual dent in the face sheet. It is shown that such damage causes a significant reduction of compressive strength and stiffness of sandwich beams. Analytical solutions estimating the Euler’s local buckling load are obtained for two typical modes of damage. These solutions are validated through experimental investigation of three sandwich configurations. The results of the analytical analysis are in agreement with the experimental data.

AB - This paper addresses the effect of local indentation/impact damage on the bearing capacity of foam core sandwich beams subjected to edgewise compression. The considered damage is in a form of through-width zone of crushed core accompanied by a residual dent in the face sheet. It is shown that such damage causes a significant reduction of compressive strength and stiffness of sandwich beams. Analytical solutions estimating the Euler’s local buckling load are obtained for two typical modes of damage. These solutions are validated through experimental investigation of three sandwich configurations. The results of the analytical analysis are in agreement with the experimental data.

KW - Euler’s load

KW - Local damage

KW - Local buckling

KW - Sandwich structure

KW - IR-75529

KW - Residual dent

KW - Low-velocity impact

KW - Crushed foam core

KW - Indentation

U2 - 10.1016/j.compstruct.2005.11.012

DO - 10.1016/j.compstruct.2005.11.012

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JF - Composite structures

SN - 0263-8223

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