Fabrication and testing of composite corrugated-core sandwich cylinder

Li, Wanxin; Sun, Fangfang; Wei, Weiyi; Liu, Debo; Zhang, Xi; Li, Ming; Fan, Hualin

doi:10.1016/j.compscitech.2017.12.033

Cited by 55 publications

(13 citation statements)

References 17 publications

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“…In recent years [12,33,34], the sandwich structures with trapezoidal corrugated-cores, as shown in Figure 2, have been of great concern due to their simple forming process, low cost, and sufficient bonding area. Therefore, the precise equivalent parameters of corrugated core have an important influence on the strength and stiffness design of sandwich structure.…”

Section: Equivalent Properties Of Trapezoidal Corrugated Coresmentioning

confidence: 99%

“…Among these cores, corrugated core is the most widely used because of its simple forming process, low cost, and relatively good mechanical properties. However, most published reports [4,7,[11][12][13] deal with axial-compressive behaviors of the composite sandwich cylinders, but rare investigations are involved in their bending behaviors, which is a significant performance index.…”

Section: Introductionmentioning

confidence: 99%

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An Equivalent Homogenization Theoretical Method for Composite Sandwich Cylinders Subjected to Pure Bending

Liu

et al. 2021

Symmetry

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An equivalent theoretical homogenization method was proposed for composite sandwich cylinders subjected to pure bending. Firstly, based on a homogeneous orthotropic layer hypothesis, the trapezoidal corrugated sandwich core was found to be equivalent in a homogenization orthotropic layer with the nine equivalent mechanical properties. Then, Lekhnitskii’s theory, based on a unified connection parameter method, was introduced and applied in the equivalent composite sandwich cylinder. The method developed by Lekhnitskii is suitable for arbitrary combinations of winding layers with different winding angles and materials. Additionally, the bending stiffness of the equivalent sandwich cylinder could be calculated. By developing user subroutine of UMAT, the numerical calculation results were in a good agreement with the results of the proposed method. Further, according to the Hill–Tsai strength criterion and the maximum strain criterion, parametric study was done for specified bending stiffness and specified bending strength. The results show that the influence of core parameters on the specified bending stiffness and strength are lower than that of the skin parameters. Additionally, larger skin thickness and smaller winding angles could improve the specified bending stiffness and specified bending strength of the composite corrugated sandwich cylinders.

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Section: Equivalent Properties Of Trapezoidal Corrugated Coresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Equivalent Homogenization Theoretical Method for Composite Sandwich Cylinders Subjected to Pure Bending

Liu

et al. 2021

Symmetry

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“…Hu et al [7] designed a novel lattice truss sandwich panel which is made up of orthogonal corrugated lattice trusses, and carried out a series of experiments to reveal the failure modes. Li et al [8] explored the strength and failure mode of carbon fiber reinforced corrugated-core sandwich cylinders. Nia et al [9] investigated the ballistic limit velocity of sandwich structures with wired core and face-sheets numerically and experimentally.…”

Section: Introductionmentioning

confidence: 99%

Energy absorption characteristics of three-layered sandwich panels with graded re-entrant hierarchical honeycombs cores

Tan

et al. 2020

Aerospace Science and Technology

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Two innovative re-entrant hierarchical sandwich panels constructed by substituting the cell walls of re-entrant honeycombs with isotropic regular hexagon substructure (RHH) and equilateral triangle substructure (RHT) are proposed in this paper, and their crashworthiness performance has been investigated systematically. Based on the Euler beam theory, the Young's moduli of units of re-entrant hierarchical sandwich panels are derived. A comparison between the re-entrant hierarchical sandwich panels and re-entrant sandwich panel has been conducted to study their energy absorption ability. Furthermore, the parametric analysis based on numerical analysis has been carried out to discuss the effects of the gradient, arranged orientation of hierarchical sandwich cores and the impact velocities.Results show that both the two proposed sandwich panels can greatly improve the in-plane stiffness and the energy absorption capacity, and the energy absorption mechanisms are discussed. In addition, the graded sandwich panels can effectively reduce initial peak force under quasi-static compression, and the configuration of large-medium -small (LMS) performs the best when under high impact velocity. The cross-arranged cores can significantly improve the impact resistance ability of RHT sandwich panels.This work provides a new solution for designing lightweight sandwich structures.

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“…Li et al. [20] experimentally examined the strength and failure modes of a composite corrugated-core sandwich cylinder (CSC) subjected to uniaxial compression. It was demonstrated that the split forming method makes the CSC stiffer, while the method of integral filament winding forming makes the CSC stronger.…”

Section: Introductionmentioning

confidence: 99%

Free vibration and axial compression of all-metallic cylindrical and truncated conical sandwich shells with corrugated cores

Yang

Han

et al. 2020

Jnl of Sandwich Structures & Materials

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All-metallic sandwich-walled cylindrical and conical structures for aerospace applications often require simultaneous excellent vibration and load-carrying capacities. In the present study, the free vibration and axial compression behaviors of cylindrical and truncated conical sandwich shells with corrugated cores are investigated using a combined experimental and numerical approach. Excellent agreement between experimental measurements and finite element simulations for representative vibration and axial compression characteristics is achieved. Parametric studies based on the response surface model are subsequently performed to quantify the influence of key geometrical parameters on vibration and axial compression performance. A multi-functional collaborative design to meet the requirement of high load-bearing capacity subjected to the constraint of low natural frequency is also carried out, which demonstrates the unique advantages of the novel sandwich-walled shells for aeronautical and astronautical applications.

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Fabrication and testing of composite corrugated-core sandwich cylinder

Cited by 55 publications

References 17 publications

An Equivalent Homogenization Theoretical Method for Composite Sandwich Cylinders Subjected to Pure Bending

An Equivalent Homogenization Theoretical Method for Composite Sandwich Cylinders Subjected to Pure Bending

Energy absorption characteristics of three-layered sandwich panels with graded re-entrant hierarchical honeycombs cores

Free vibration and axial compression of all-metallic cylindrical and truncated conical sandwich shells with corrugated cores

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