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

HL Tan; ZC He; Quan Bing Eric Li

doi:10.1016/j.ast.2020.106073

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

HL Tan, ZC He, Quan Bing Eric Li

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Abstract

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 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.

Original language	English
Article number	106073
Journal	Aerospace Science and Technology
Volume	106
Issue number	November
Early online date	17 Jul 2020
DOIs	https://doi.org/10.1016/j.ast.2020.106073
Publication status	Published - Nov 2020

Bibliographical note

Funding Information:
The project is supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No. 51621004 ) and the Natural Science Foundation of China (Grant No. U1864207 ), the Opening Project of the Guangxi Key Laboratory of Automobile Components and Vehicle Technology of Guangxi University of Science and Technology (No. 2017GKLACVTKF01 ) the Science Fund of State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body (Grant No. 71975004 ), Changsha Science and technology Program (Grant No. kq1907104 ).

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© 2020 Elsevier Masson SAS

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

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

abstract = "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 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.",

author = "HL Tan and ZC He and Li, {Quan Bing Eric}",

note = "Funding Information: The project is supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No. 51621004 ) and the Natural Science Foundation of China (Grant No. U1864207 ), the Opening Project of the Guangxi Key Laboratory of Automobile Components and Vehicle Technology of Guangxi University of Science and Technology (No. 2017GKLACVTKF01 ) the Science Fund of State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body (Grant No. 71975004 ), Changsha Science and technology Program (Grant No. kq1907104 ). Publisher Copyright: {\textcopyright} 2020 Elsevier Masson SAS Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

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language = "English",

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AU - Tan, HL

AU - He, ZC

AU - Li, Quan Bing Eric

N1 - Funding Information: The project is supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No. 51621004 ) and the Natural Science Foundation of China (Grant No. U1864207 ), the Opening Project of the Guangxi Key Laboratory of Automobile Components and Vehicle Technology of Guangxi University of Science and Technology (No. 2017GKLACVTKF01 ) the Science Fund of State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body (Grant No. 71975004 ), Changsha Science and technology Program (Grant No. kq1907104 ). Publisher Copyright: © 2020 Elsevier Masson SAS Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/11

Y1 - 2020/11

N2 - 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 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.

AB - 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 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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DO - 10.1016/j.ast.2020.106073

M3 - Article

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JF - Aerospace Science and Technology

IS - November

M1 - 106073

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

Abstract

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