Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/155213
Title: Novel arc-shaped ligaments to enhance energy absorption capabilities of re-entrant anti-trichiral structures
Authors: Zhang, Ee Teng
Liu, Hu
Ng, Bing Feng
Keywords: Engineering::Mechanical engineering
Issue Date: 2021
Source: Zhang, E. T., Liu, H. & Ng, B. F. (2021). Novel arc-shaped ligaments to enhance energy absorption capabilities of re-entrant anti-trichiral structures. Composites Part B: Engineering, 227, 109366-. https://dx.doi.org/10.1016/j.compositesb.2021.109366
Project: 04INS000329C160 
04INS000453C160 
Journal: Composites Part B: Engineering 
Abstract: In this study, novel re-entrant anti-trichiral (REAT) structures with arc-shaped ligaments are proposed to enhance both the elastic modulus and energy absorption capabilities through both experimental and numerical approaches. By first replacing straight ligaments with curved ligaments, unique deformation patterns are introduced through the rotation of cylinders, contact interaction between cylinder and ligaments, as well as petal-like cell interactions. Quasi-static compression reveals the effect of curvature along ligaments and their directions on the Young's modulus, Poisson's ratio, plateau stress and specific energy absorption capabilities. The primary finding is an improvement of up to eight times in normalised Young's modulus and up to four times in specific energy absorption (SEA) with the introduction of combined curved ligaments (Dc + Uc) design. In addition, parametric studies on geometrical parameters of ligament curvature and cylinder diameter shows significant influence over mechanical properties and deformation patterns. The present study sheds light on the development of novel REAT honeycombs that can be achieved through simple ligament modifications and combinational designs.
URI: https://hdl.handle.net/10356/155213
ISSN: 1359-8368
DOI: 10.1016/j.compositesb.2021.109366
Rights: © 2021 Elsevier Ltd. All rights reserved. This paper was published in Composites Part B: Engineering and is made available with permission of Elsevier Ltd.
Fulltext Permission: embargo_20231222
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles
SC3DP Journal Articles

Files in This Item:
File Description SizeFormat 
2. Novel arc-shaped ligaments to enhance energy absorption capabilities of re-entrant anti-trichiral structures.pdf
  Until 2023-12-22
2.97 MBAdobe PDFUnder embargo until Dec 22, 2023

Page view(s)

48
Updated on May 18, 2022

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.