Local effects across core junctions in sandwich panels

Bozhevolnaya, Elena; Thomsen, Ole Thybo; Kildegaard, Arne; Skvortsov, Vitaly

doi:10.1016/s1359-8368(03)00043-x

Cited by 46 publications

(37 citation statements)

References 10 publications

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“…Thus, the tests have demonstrated that a double thickness of the skin leads to a lower strength. This kind of local effect was found analytically by Bozhevolnaya et al across core junctions [9] and in the vicinity of inserts [10]. Stress concentration occurs in the vicinity of the insert/core/ skin triple point.…”

Section: Introductionsupporting

confidence: 54%

Non-linear finite element analysis of inserts in composite sandwich structures

Bunyawanichakul

Castanié

Barrau

2008

Composites Part B: Engineering

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Section: Introductionsupporting

confidence: 54%

Non-linear finite element analysis of inserts in composite sandwich structures

Bunyawanichakul

Castanié

Barrau

2008

Composites Part B: Engineering

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“…The effect of a shear resultant acting on the junctions of different cores in sandwich panels was first described with the help of the closed-form analytical model by Skvortsov and Thomsen [5]. Further to this, an experimental investigation has confirmed the findings of the analytical model for sandwich beams [6]. The generalization of the model for the case of inserts in sandwich plates, and its verification my means of Finite Element Analysis, followed in [7].…”

Section: Introductionmentioning

confidence: 99%

Localized Effects across Core Junctions in Sandwich Beams Subjected to In-Plane and Out-of-Plane Loading

2005

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The paper concerns local effects that occur across junctions between different cores in sandwich beams subjected to in-plane and out-of-plane loads. These local effects display themselves by a significant rise of the bending normal stresses in the faces of the sandwich near the core junctions. At the same time, an elevation of the transverse normal and shear stresses in the adjacent core parts is observed.The nature and intensity of the local effects is studied for sandwich beams loaded statically by axial (in-plane) and transverse (out-of-plane) forces. Two types of core junctions, namely a conventional butt junction and a reinforced butt junction, are investigated experimentally. The experimental data coincides perfectly with the numerical simulations performed using Finite Element Analysis.

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“…12 and 13 shows that the upper skin is loaded in a pure compression mode (the lower skin is naturally loaded in tension). The influence of the stress concentrations in the vicinity of the core junctions may be reduced to use an intermediate stiffness material between the still core and the compliant core [33]. Here, this material is the adhesive whose joint must be thick enough to avoid the rupture in the upper skin or in the compliant core.…”

Section: Design Of the Sandwich Beammentioning

confidence: 99%