Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31340
Characterization of 3D Printed Re-Entrant Chiral Auxetic Geometries

Authors: Tatheer Zahra

Abstract:

Auxetic materials have counteractive properties due to re-entrant geometry that enables them to possess Negative Poisson’s Ratio (NPR). These materials have better energy absorbing and shock resistance capabilities as compared to conventional positive Poisson’s ratio materials. The re-entrant geometry can be created through 3D printing for convenient application of these materials. This paper investigates the mechanical properties of 3D printed chiral auxetic geometries of various sizes. Small scale samples were printed using an ordinary 3D printer and were tested under compression and tension to ascertain their strength and deformation characteristics. A maximum NPR of -9 was obtained under compression and tension. The re-entrant chiral cell size has been shown to affect the mechanical properties of the re-entrant chiral auxetics.

Keywords: Auxetic materials, 3D printing, Negative Poisson’s Ratio, re-entrant chiral auxetics.

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 21

References:


[1] T. Zahra and M. Dhanasekar, “Characterization of cementitious polymer mortar – Auxetic foam composites,” Construction and Building Materials, 2017, vol. 147, pp. 143–159.
[2] T. Li, Y. Chen and X. Hua et al., “Exploiting negative Poisson's ratio to design 3D-printed composites with enhanced mechanical properties,” Materials and Design, 2018, vol. 142, pp. 247–258.
[3] E.C. Yang, T.D. Ngo, D. Ruan and P. Tran, “Impact Resistance and Failure Analysis of Plain-Woven Curtains,” International Journal of Protective Structures,” 2015, vol. 6, pp. 113-136.
[4] A. Alomarah, D. Ruan, S. Masood and Z. Gao, “Compressive properties of a novel additively manufactured 3D auxetic structure,” Smart Materials and Structures, 2019, vol. 17, 085019.
[5] M. Mir, M. Ali, J. Sami and U. Ansari, “Review of Mechanics and Applications of Auxetic Structures,” Advances in Materials Science and Engineering, 2014, pp. 1-17.
[6] M. Sanami, “Auxetic materials for biomedical applications,” PhD thesis, University of Bolton, 2015.
[7] O. Duncan and T. Shepherd et al., “Review of Auxetic Materials for Sports Applications: Expanding Options in Comfort and Protection,” Applied Sciences, 2018, vol. 8(6), 941.
[8] G. Qiang, Q. Gao and L. Wang, "Dynamic Crushing Behaviors of Four Kinds of Auxetic Structures," SAE Technical Paper 2019-01-1096, 2019.
[9] X. Hou, Z. Deng and K. Zhang, “Dynamic Crushing Strength Analysis of Auxetic Honeycombs,” Acta Mechanica Solida Sinica, 2016, vol. 29(5), pp. 490-501.
[10] X. Wang, B. Wang, X. Li, and L. Ma, “Mechanical properties of 3D re-entrant auxetic cellular structures,” International Journal of Mechanical Sciences, 2019, vol. 131-132, pp. 396-407.
[11] A. Alomarah, S. H. Masood, I. Sbarski, B. Faisal, Z. Gao and D. Ruan, “Compressive properties of 3D printed auxetic structures: experimental and numerical studies,” Virtual and Physical Prototyping, 2020, vol. 15:1, pp. 1-21.
[12] A. Alomarah, D. Ruan, and S. Masood, “Tensile properties of an auxetic structure with re- entrant and chiral features—a finite element study,” The International Journal of Advanced Manufacturing Technology, vol. 99(9-12), pp. 2425-2440.
[13] K. Essassi, J. Rebiere, A. El Mahi, M. A. Ben Souf, A. Bouguecha, M. Haddar, “Experimental and analytical investigation of the bending behaviour of 3D-printed bio-based sandwich structures composites with auxetic core under cyclic fatigue tests,” Composites Part A: Applied Science and Manufacturing, 2020, vol. 131, 105775.
[14] All3DP, “PLA vs ABS – Filaments for 3D Printing Compared”, March 20, 2019. https://all3dp.com/1/pla-vs-abs-filament-3d-printing/#section-material-comparison.
[15] ASTM D 638, “Standard Test Method for Tensile Properties of Plastics,” 2014.
[16] ASTM D 695, “Standard Test Method for Compressive Properties of Rigid Plastics,” 2015.