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Numerical investigation of tubular structures generated by cutting method and pattern scale factor (PSF) method

Xin Ren (Department of Civil Engineering, Nanjing Tech University, Nanjing, China)
Fang Cheng Liu (Nanjing Tech University College of Civil Engineering, Nanjing, China)
Xiang Yu Zhang (Nanjing Tech University College of Civil Engineering, Nanjing, China)
Yi Min Xie (Centre for Innovative Structures and Materials, RIMT University School of Engineering, Melbourne, Australia)

Pigment & Resin Technology

ISSN: 0369-9420

Publication date: 1 August 2019

Abstract

Purpose

This paper aims to study the tensile performance, deformation characteristics, auxeticity and stability of different auxetic tubular structures generated by cutting method and pattern scale factor (PSF) method using validated finite element analysis.

Design/methodology/approach

Two types of auxetic tubular structures were designed by a coordinate transformation method and the PSF adjustment method, respectively. ABAQUS/explicit solver was used for the large deformation analysis and the displacement of key nodes was extracted to calculate Poisson’s ratio value and evaluate the deformation of tubular structures.

Findings

The random cut method was not suitable for designing auxetic tubular structures. Vertical and horizontal cut approach was suitable, but the change of the tubular diameter was lower than the tubular structures generated by the PSF adjustment method.

Research limitations/implications

Simple ways to generate auxetic tubular structure, which can be made into intelligent and foldable equipment, such as annuloplasty rings, angioplasty stents and oesophageal stents. By combined with shape memory polymer, various smart tubular materials and structures with various functions can be designed, especially in medical scaffold and other medical equipment fields.

Originality/value

The auxetic characteristic of tubular structure designed by using random cut method has been investigated for the first time. The outcome of this study would be very useful design tubular structures with better mechanical properties.

Keywords

Acknowledgements

Conflict of Interest: The authors declare no conflict of interest.

Citation

Ren, X., Liu, F.C., Zhang, X.Y. and Xie, Y.M. (2019), "Numerical investigation of tubular structures generated by cutting method and pattern scale factor (PSF) method", Pigment & Resin Technology, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/PRT-05-2019-0049

Publisher

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Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited