Mechanical and energy absorption properties of 3D-printed honeycomb structures with Voronoi tessellations

Frontiers in Mechanical Engineering

Mechanical Engineering

Kas Oosterhuis¹  Elsadig Mahdi²  John-John Cabibihan²  Abdelrahman Mohamed Ragab²  Aamir Dean³ 

[1] 2, ONL Innovation Studio, Netherlands, Netherlands;Mechanical and Industrial Engineering Department, Qatar University, Doha, Qatar;School of Civil Engineering, Sudan University of Science and Technology, Khartoum, Sudan;

关键词: honeycomb structures;    Voronoi tessellations;    3D printing;    PLA;    mechanical properties;    energy absorption (EA);   

DOI  :  10.3389/fmech.2023.1204893

 received in 2023-04-12, accepted in 2023-05-22,  发布年份 2023

来源: Frontiers

【 摘 要 】

3D printing technology is the new frontier in building construction. It is especially useful for making small structures within a short period. Full construction, including interior partitions and exterior façades, can be achieved with this technology. This paper proposes a parametric Voronoi tessellations model for quickly generating and fabricating 3D-printed hexagonal honeycomb partitions for interior design. Comprehensive experimental testing was conducted to characterize the mechanical properties and investigate the energy absorption characteristics of the proposed 3D-printed hexagonal honeycomb while comparing it to alternative hexagonal honeycomb structures. The tests included tensile testing (ASTM-D638) of the printed Polylactic Acid (PLA) material, especially with the almost total absence of conducted research that reported mechanical properties for 3D printed material with low infill percentages such as 10%. In addition, an in-plane quasi-static axial compression testing of the lightweight honeycomb structures was also conducted on the printed structure with the same low infill percentage. Compared to non-Voronoi honeycomb structures, the Voronoi honeycomb resulted in superior mechanical and energy absorption properties with energy absorption values ranging from 350 to 435 J and crash force efficiency being 1.42 to 1.65.

【 授权许可】

Unknown   
Copyright © 2023 Ragab, Mahdi, Oosterhuis, Dean and Cabibihan.