A low velocity impact study on press formed thermoplastic honeycomb sandwich panels

Yellur, Manoja Rao; Seidlitz, Holger; Kuke, Felix; Wartig, Kevin; Tsombanis, Nikolas

doi:10.1016/j.compstruct.2019.111061

Cited by 22 publications

(6 citation statements)

References 17 publications

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“…Previous studies have mentioned that the initiation of damage depends on the panel supporting conditions, projectile nose form, material characteristics, face sheets, and core geometry [56,57]. The contact force between the impactor and sandwich composite structure, energy absorption, and deflection were recorded and compared with historical variables [43,58].…”

Section: Low-velocity Impactmentioning

confidence: 99%

Investigating the low-velocity impact behaviour of sandwich composite structures with 3D-printed hexagonal honeycomb core—a review

Azaman¹,

Faissal²,

Majid³

et al. 2023

Funct. Compos. Struct.

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This study aims to comprehensively review previous and present research on the dynamic responses of 3D-printed sandwich composite structures. The low-velocity impact and failure mechanisms caused by the impact load and energy absorption capabilities are discussed. Investigating the processes and mechanics of a material is an essential step in addressing the structural failure problems, which are mostly caused by a fracture. The encouraging impact resistance results have prompted researchers to explore the capabilities of structural integrity to optimize performance, which can be accomplished leveraging the enhanced material and architectural combinations of sandwich composites. The ongoing research into low-velocity behavior of fabricated sandwich composite structures with 3D-printed hexagonal honeycomb cores and varying core materials is emphasized in this study.

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Section: Low-velocity Impactmentioning

confidence: 99%

Investigating the low-velocity impact behaviour of sandwich composite structures with 3D-printed hexagonal honeycomb core—a review

Azaman¹,

Faissal²,

Majid³

et al. 2023

Funct. Compos. Struct.

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“…When a system oscillates due to an external variable force, like an earthquake or hurricane, it is referred to as forced vibration. The 2019 study by Yelver et al explores the vibration effects of a lighter honeycomb sandwich structure that meets the requirements of the utility vehicle industry [3]. In order to accomplish this, glass fibers and a polypropylene matrix are used to create cladding sheets.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Circular Plate Vibrations in a Structure Made of Sandwich Panel

2024

IJSER

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Sandwich panels are essential elements in many structures like space vehicles, airplanes, cars, buildings, bridges, ships, and submarines. This research focuses on analyzing the vibrations of a circular sheet composed of a sandwich panel. The circular sheet in the sandwich panel enhances its impact resistance, providing a significant advantage. A circular sandwich panel with three free states, one supporting support, and two supporting supports was designed with ANSYS software for modeling purposes. Three free boundary conditions, one supported support, and two supported supports were utilized to conduct the analysis in this research. The results obtained for all three conditions were compared. An increase of the sandwich panel thickness core generally does not impact the frequencies of its vibration modes, and this influence diminishes as the number of supports increases. Increasing the thickness of the top layers has a more significant impact on raising the vibration modes frequency of the studied sandwich panel compared to increasing the core thickness. An increase of 4 mm in the tops' thickness raises the frequency of the 10th mode to over 700 Hz. Meanwhile, a 20 mm increase in the core's thickness elevates the frequency of the 10th vibration mode from around 500 Hz to below 600 Hz. If a sandwich panel is supported, increasing the thickness of the upper layer has little or no effect on the frequency of low vibration modes up to the fourth mode. However, starting from the fifth mode, it becomes evident that increasing the thickness directly affects the frequency of vibration modes.

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“…Zhang et al [25] used a spherical impactor on low-velocity impact experiments to investigate the absorbed energy capability of aluminum honeycomb sandwich structures. Besides, failure mechanism, [26][27][28][29] projectile shape, [30] type of material used in the sandwich panel manufacturing, [31][32][33][34] face/bottom skin sheet thickness, [35,36] and geometric configuration [37,38] parameters are also investigated by researchers.…”

Section: Introductionmentioning

confidence: 99%

The effect of carbon nanotubes modified polyurethane adhesive on the impact behavior of sandwich structures

Çetin

2021

Polymer Composites

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Sandwich panels with aluminum honeycomb cores have emerged as an essential class of lightweight building materials in a wide variety of structural engineering areas, including marine, railway, aerospace, and automotive structures. Although sandwich structures offer remarkable mechanical properties, for instance, high specific strength and stiffness, these structures are open to the damage created by the low-velocity impact. This study investigates the dynamic behavior of aluminum honeycomb sandwich panels with different core cell sizes based on neat and multi-walled carbon nanotube (MWCNT) reinforced polyurethane (PU) adhesives that are aimed. The enhancement in impact performance of honeycomb sandwich structures obtained by the inclusion of MWCNTs in the PU adhesive is investigated. The effect of the MWCNT reinforcements on square sandwich panels at 50 J energy level is examined using an instrumented drop tower test setup. After acquiring load-time histories, the numerical integration method is implemented to obtain loaddeflection and energy-time curves. Also, energy balance modeling (EBM) is

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A low velocity impact study on press formed thermoplastic honeycomb sandwich panels

Cited by 22 publications

References 17 publications

Investigating the low-velocity impact behaviour of sandwich composite structures with 3D-printed hexagonal honeycomb core—a review

Investigating the low-velocity impact behaviour of sandwich composite structures with 3D-printed hexagonal honeycomb core—a review

Analysis of Circular Plate Vibrations in a Structure Made of Sandwich Panel

The effect of carbon nanotubes modified polyurethane adhesive on the impact behavior of sandwich structures

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