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In-plane bending performance of novel negative Poisson’s ratio structures and its enhancement through the application of shape optimization method by S. Gohar; G. Hussain; A. Ali; M. Ilyas; Mohammed Alkahtani is a Engineering article available to read on EtoBox.

What is In-plane bending performance of novel negative Poisson’s ratio structures and its enhancement through the application of shape optimization method about?

NPR structures possess unique mechanical characteristics rendering them attractive for various engineering applications. However, their low in-plane stiffness limits their structural applications. The present study proposes a two-fold solution to overcome this issue. Firstly, new negative Poisson’s ratio (NPR) structures were designed with improved NPR thereby yielding better performance than the conventional NPR structures. Secondly, shape optimization was applied to the structures, whereby material was redistributed in each cell according to the applied load. The bending performance of structures was evaluated through Finite Element Method, duly validated, and quantified in terms of their flexural stiffness and energy absorption capacity. According to the results, the newly proposed structures offered higher performance than the conventional structure, i.e., 37–213 % stiffness and 9–37 % specific energy absorption capacity. This improvement further increased by many folds when shape optimization was applied to the structures, i.e., 427 % stiffness and 151 % specific energy absorption as compared to unoptimized conventional structures. This study reveals that the bending performan

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Author

S. Gohar; G. Hussain; A. Ali; M. Ilyas; Mohammed Alkahtani

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)