Bending Moment of Mortise-and-Tenon Joints in a Crossed Chair Base

This paper investigated the bending moment of chair base joints. The ultimate bending moments (maximum moment), calculated on the base of the measured maximum applied loads (maximum force), were compared for the front leg and rear leg joints of a chair base. The joints had different angles between t...

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Main Authors: Seid Hajdarevic, Murco Obucina, Manja Kitek Kuzman, Dick Sandberg
Format: Article
Language:English
Published: University of Zagreb, Faculty of Forestry and Wood Technology 2023-01-01
Series:Drvna Industrija
Subjects:
Online Access:https://hrcak.srce.hr/file/428812
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author Seid Hajdarevic
Murco Obucina
Manja Kitek Kuzman
Dick Sandberg
author_facet Seid Hajdarevic
Murco Obucina
Manja Kitek Kuzman
Dick Sandberg
author_sort Seid Hajdarevic
collection DOAJ
description This paper investigated the bending moment of chair base joints. The ultimate bending moments (maximum moment), calculated on the base of the measured maximum applied loads (maximum force), were compared for the front leg and rear leg joints of a chair base. The joints had different angles between the stretcher and the leg (joint angle) as well different tenon lengths (30 mm and 32 mm). The results of the tests indicated that for different test specimen configurations but the same tenon-and-mortise geometry, the maximum force of joints with a smaller value of joint angle (front leg joints) was higher than the force values of joints with a larger angle (rear leg joints) for all tenon lengths. However, the results showed less difference among the calculated bending moments of the analysed sets of joints. A significant difference was not revealed between the bending moments of joints with a smaller value of joint angle and the bending moments of joints with a larger angle for all tenon lengths. A significant difference between the bending moments for the tenon length of 30 mm and tenon length of 32 mm was determined for rear leg joints but not for front leg joints. The presented approach of joint strength analysis through the testing of specimens with different shapes and dimensions are applicable to research and practice.
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spelling doaj.art-3db5dfefa77b46d59b66fb9d0b7a0a3e2023-04-12T15:28:22ZengUniversity of Zagreb, Faculty of Forestry and Wood TechnologyDrvna Industrija0012-67721847-11532023-01-0174131110.5552/drvind.2023.000415Bending Moment of Mortise-and-Tenon Joints in a Crossed Chair BaseSeid Hajdarevic0Murco Obucina1Manja Kitek Kuzman2Dick Sandberg3University of Sarajevo, Faculty of Mechanical Engineering, Department of Wood Technology, Sarajevo, Bosnia and HerzegovinaUniversity of Sarajevo, Faculty of Mechanical Engineering, Department of Wood Technology, Sarajevo, Bosnia and HerzegovinaUniversity of Ljubljana, Biotechnical Faculty, Ljubljana, SloveniaLuleå University of Technology, Wood Science and Engineering, Skellefteå, SwedenThis paper investigated the bending moment of chair base joints. The ultimate bending moments (maximum moment), calculated on the base of the measured maximum applied loads (maximum force), were compared for the front leg and rear leg joints of a chair base. The joints had different angles between the stretcher and the leg (joint angle) as well different tenon lengths (30 mm and 32 mm). The results of the tests indicated that for different test specimen configurations but the same tenon-and-mortise geometry, the maximum force of joints with a smaller value of joint angle (front leg joints) was higher than the force values of joints with a larger angle (rear leg joints) for all tenon lengths. However, the results showed less difference among the calculated bending moments of the analysed sets of joints. A significant difference was not revealed between the bending moments of joints with a smaller value of joint angle and the bending moments of joints with a larger angle for all tenon lengths. A significant difference between the bending moments for the tenon length of 30 mm and tenon length of 32 mm was determined for rear leg joints but not for front leg joints. The presented approach of joint strength analysis through the testing of specimens with different shapes and dimensions are applicable to research and practice.https://hrcak.srce.hr/file/428812chairmortise-and-tenon jointbending momentjoint angletenon length
spellingShingle Seid Hajdarevic
Murco Obucina
Manja Kitek Kuzman
Dick Sandberg
Bending Moment of Mortise-and-Tenon Joints in a Crossed Chair Base
Drvna Industrija
chair
mortise-and-tenon joint
bending moment
joint angle
tenon length
title Bending Moment of Mortise-and-Tenon Joints in a Crossed Chair Base
title_full Bending Moment of Mortise-and-Tenon Joints in a Crossed Chair Base
title_fullStr Bending Moment of Mortise-and-Tenon Joints in a Crossed Chair Base
title_full_unstemmed Bending Moment of Mortise-and-Tenon Joints in a Crossed Chair Base
title_short Bending Moment of Mortise-and-Tenon Joints in a Crossed Chair Base
title_sort bending moment of mortise and tenon joints in a crossed chair base
topic chair
mortise-and-tenon joint
bending moment
joint angle
tenon length
url https://hrcak.srce.hr/file/428812
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AT murcoobucina bendingmomentofmortiseandtenonjointsinacrossedchairbase
AT manjakitekkuzman bendingmomentofmortiseandtenonjointsinacrossedchairbase
AT dicksandberg bendingmomentofmortiseandtenonjointsinacrossedchairbase