Experimental and Numerical Investigation of Response of Sandwich Composite Beam Subjected to Low-Velocity Impact

Mandys, Tomáš; Laš, Vladislav; Kroupa, Tomáš; Zemčík, Robert

doi:10.4028/www.scientific.net/amm.732.239

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…All material parameters are summarized in Table 1. The values of parameters E 3, G 23 and G 13 were taken from literature [17,18].…”

Section: Materials Model Of Laminated Sandwich Skin and Foam Corementioning

confidence: 99%

Numerical Simulation of the Impact on Wide Composite Sandwich Beam

Laš¹,

Mandys²,

Kroupa³

et al. 2014

AMM

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This paper is focused on the development of a finite element model describing the behaviour of sandwich structure with composite skins and low density foam core in case of low-velocity transverse impact load. The material properties of foam core and composite skins were determined using tensile tests. The non-linear elastic behaviour of composite skins was implemented into the commercial finite elements software using material subroutine. The identification process combining finite element simulations and mathematical optimization method was used for the determination of material parameters of the composite skins. The foam core was modelled using Abaqus Low-density Foam material model considering the non-linear behaviour in case of tension.

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“…All material parameters are summarized in Table 1. The values of parameters E 3, G 23 and G 13 were taken from literature [17,18].…”

Section: Materials Model Of Laminated Sandwich Skin and Foam Corementioning

confidence: 99%

Numerical Simulation of the Impact on Wide Composite Sandwich Beam

Laš¹,

Mandys²,

Kroupa³

et al. 2014

AMM

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“…[ 6–10 ] The behavior of sandwich panels and hybrid composite structures under LVI has been extensively studied using experimental, numerical, and analytical methods. [ 2,11–24 ] Many researchers have utilized LVI tests to assess sandwich panels with different face sheets and core materials. [ 25–32 ] Composite skins have a low resistance under transverse impact loads because they endure very low amounts of energy during impact loading.…”

Section: Introductionmentioning

confidence: 99%

“…experimental, numerical, and analytical methods. [2,[11][12][13][14][15][16][17][18][19][20][21][22][23][24] Many researchers have utilized LVI tests to assess sandwich panels with different face sheets and core materials. [25][26][27][28][29][30][31][32] Composite skins have a low resistance under transverse impact loads because they endure very low amounts of energy during impact loading.…”

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confidence: 99%

Experimental investigation of sandwich panels with hybrid composite face sheets and embedded shape memory alloy wires under low velocity impact

et al. 2020

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This experimental study was conducted to investigate the behavior of hybrid composite sandwich panels with superelastic shape memory alloy (SMA) wires under low velocity impact (LVI). Square-shaped sandwich panels were made few of a foam core and hybrid composite structures with carbon fiber and glass fiber, in which prestrained superelastic SMA wires were embedded between the layers. The sandwich panels had symmetrical and asymmetrical lay-ups and SMA wires were placed between the layers with different states. LVI tests were performed by drop weight impact testing machine. Moreover, damaged areas of the panels were estimated using thermography. The experimental results showed that the impact performance of the panels improved after embedding SMA wires. The presence of the SMA within the composite sandwich structure prevented the full perforation of the samples and reduced the internal delamination area. The utilization of SMA wires embedded in front face sheet, which is subject to the direct impact, is more effective than the utilization of wire in the back face layer. It was also found that increasing the layers of the back face and asymmetrication of the structure were more effective than the use of SMA wires in the symmetric structure in improving the panel impact resistance. K E Y W O R D S active infrared thermography, composite sandwich panel, damaged area, low velocity impact, superelastic SMA wire 1 | INTRODUCTION Sandwich panels are usually used for constructing lightweight structures with high mechanical load capacity. Composite sandwich panels composed of composite skins and a thick low-density core can improve different properties of structure such as stiffness, strength, sound insulation, low heat transfer, and high impact energy absorption. [1-4] Today, this type of structures is used in aerospace, marine, transport, and civil industries. [5] Low resistance under low velocity impact (LVI) loading is one of the important weaknesses of composite sandwich panels. Hence, in order to improve their performance, it is necessary to comprehensively investigate the behavior of composite sandwich panels under LVI. [6-10] The behavior of sandwich panels and hybrid composite structures under LVI has been extensively studied using

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