Journal article

Investigation of the auxetic oval structure for energy absorption through quasi-static and dynamic experiments

Steven Linforth, Tuan Ngo, Phuong Tran, Dong Ruan, Rami Odish

International Journal of Impact Engineering | Elsevier BV | Published : 2021

Abstract

Auxetics are structures and materials with a negative Poisson's ratio, meaning they contract in the direction perpendicular to the applied force under a compressive load. This phenomenon can lead to increased energy absorption, among other favourable parameters to protect against impulsive loadings. In this research, a structure with alternating oval perforations was investigated which gives rise to an auxetic geometry, referred to as an ‘auxetic oval’ design within this paper. Quasi-static (strain rate = 0.001/s) and dynamic (strain rate = 100/s) experiments have been conducted on small-scale specimens, manufactured using subtractive fabrication (laser cutting). Different design criteria we..

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Grants

Awarded by Australian Research Council


Funding Acknowledgements

The authors acknowledge the support from Dr. Gabriele Imbalzano, Dr. Shanqing Xu, Dr. Ayman Ashab, and Dr Jinghan Lu in the support of these tests. The authors acknowledge the support of the Australian Commonwealth Government and the Australian Government Research Training Program Scholarship. This research was funded by the Australian Government through the Australian Research Council Linkage Grant (project number LP150100906).