Strength and stiffness of 3D-printed connectors compared with the wooden mortise and tenon joints for chairs

Hajdarević, Seid (avtor), Kitek Kuzman, Manja (avtor), Obućina, Murčo (avtor), Vratuša, Srečko (avtor), Kušar, Tomaž (avtor), Kariž, Mirko (avtor)

In this study, 3D-printed connectors to replace the typical L-shaped joints in the construction of a chair were developed, tested and numerically analysed. Different connectors were designed and manufactured with a fused deposition modelling (FDM) 3D printer using acrylonitrile butadiene styrene (ABS) with the aim to find a simple shaped connector which could be used to build chairs and withstand standard chair loading requirements. The strength and stiffness of the joints were tested and compared with traditional beech mortise-and-tenon joints. Numerical stress and strain analyses were performed with the finite element method for an orthotropic linear-elastic model. The experimental results showed that joints with 3D-printed connectors achieved lower strength than the traditional wooden mortise-and-tenon joints with similar dimensions. The results indicate that the effect of reinforcement of the connector were not recognised due to the small thickness and inadequate geometric position and arrangement of the reinforcement ABS material. The chair assembled with 3D-printed connectors could withstand the loads for seating, but failed the backrest test according to standard EN 1728:2002. The connectors need to be optimised and reinforced to withstand standard loads.

• Jezik: Angleški jezik
• Ključne besede: wood, mortise-and-tenon joint, 3D printing, strength, stiffness
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: BF - Biotehniška fakulteta ; FA - Fakulteta za arhitekturo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2023
• Št. strani: Str. 870–883
• Številčenje: Vol. 18, no. 3
• PID: 20.500.12556/RUL-137812
• UDK: 630*8
• ISSN pri članku: 1748-0280
• DOI: 10.1080/17480272.2022.2086065
• COBISS.SI-ID: 112170755
• Datum objave v RUL: 01.07.2022

Gradivo je del revije

• Naslov: Wood material science & engineering
• Skrajšan naslov: Wood mater. sci. eng
• Založnik: Taylor & Francis
• ISSN: 1748-0280
• COBISS.SI-ID: 522172953

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: les, čepne vezi, 3D tiskanje

Projekti

• Financer: Drugi - Drug financer ali več financerjev
• Program financ.: RS, Ministrstvo za izobraževanje, znanost in šport, WoodWisdom-Net
• Naslov: Wood Believe
• Akronim: W3B

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P4-0015
• Naslov: Les in lignocelulozni kompoziti