Development of a novel multi-cellular origami metastructure and investigation into numerical and experimental energy absorption behavior

Document Type : Research Article

Authors

1 K. N. Toosi University of Technology

2 K. N. Toosi University of technology

3 هیات علمی

Abstract

Nowadays, the use of additive manufacturing provides a unique opportunity to create complex structures. One such structure that is currently garnering attention in various fields, such as energy absorption, is origami structures. In this paper, novel multi-cellular origami structures are introduced to improve energy absorption performance under quasi-static compression loading. The control of these structures is determined by two key parameters: the number of layers and the ratio between the length of the top side and the bottom side. The effects of these structures on crashworthiness were simulated using Abaqus software and validated through experimental tests with models built using additive manufacturing. Additionally, a simple structure was designed and tested to facilitate a comparison between origami and non-origami structures. The results of this study showed that geometric parameters play an important role in increasing energy absorption behavior, with origami structures exhibiting a 97 percent increase in specific energy absorption (SEA) compared to non-origami structures. Finally, based on the complex proportional assessment method, the best structure was determined among those designed according to energy absorption criteria.

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Amirkabir Journal of Mechanical Engineering
Volume 56, Issue 5
2024
Pages 717-740

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