Weight–strength optimization of wooden household chairs based on member section size

Weight-strength optimization of wooden household chairs was performed based on the member section size in this study. Member section sizes of the Scotch pine (Pinus sylvestris) and Oriental beech (Fagus orientalis) chairs were optimized and resulting re-manufactured optimized chairs were tested und...

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Main Authors: Ersan Güray, Erkan Ceylan, Ali Kasal
Format: Article
Language:English
Published: Universidad del Bío-Bío 2022-03-01
Series:Maderas: Ciencia y Tecnología
Subjects:
Online Access:http://revistas.ubiobio.cl/index.php/MCT/article/view/5353
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author Ersan Güray
Erkan Ceylan
Ali Kasal
author_facet Ersan Güray
Erkan Ceylan
Ali Kasal
author_sort Ersan Güray
collection DOAJ
description Weight-strength optimization of wooden household chairs was performed based on the member section size in this study. Member section sizes of the Scotch pine (Pinus sylvestris) and Oriental beech (Fagus orientalis) chairs were optimized and resulting re-manufactured optimized chairs were tested under the cyclic “front to back”, “back to front” and “backrest” loads according to American Library Association (ALA) specification. Finite element method (FEM) and MATLAB nonlinear programming were utilized for the optimization. Firstly, the internal forces and moments acting on each member were analyzed by FEM in order to obtain the maximum critical stresses in each type of member; then, optimized cross-sectional sizes of the members were determined by Gradient Descent method, and all constraints were treated with Logarithmic Barrier Functioning. As a result, the minimum section sizes of members were determined, and cyclic performance tests were performed to determine whether the optimized chairs were strong enough to carry the acceptable loads. According to the results, member section size of both beech and pine chairs could be significantly reduced. The reduction was 32 % in the total weight and volume for beech chairs while 16 % for pine chairs without sacrificing the performance required for domestic usage by ALA. In conclusion, the method used is suitable for the optimization of furniture frames, making it lighter and reducing the material costs. 
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spelling doaj.art-d7af939d11f041a5ac7f5657d845cf782022-12-22T00:32:22ZengUniversidad del Bío-BíoMaderas: Ciencia y Tecnología0717-36440718-221X2022-03-0124Weight–strength optimization of wooden household chairs based on member section sizeErsan GürayErkan CeylanAli Kasal Weight-strength optimization of wooden household chairs was performed based on the member section size in this study. Member section sizes of the Scotch pine (Pinus sylvestris) and Oriental beech (Fagus orientalis) chairs were optimized and resulting re-manufactured optimized chairs were tested under the cyclic “front to back”, “back to front” and “backrest” loads according to American Library Association (ALA) specification. Finite element method (FEM) and MATLAB nonlinear programming were utilized for the optimization. Firstly, the internal forces and moments acting on each member were analyzed by FEM in order to obtain the maximum critical stresses in each type of member; then, optimized cross-sectional sizes of the members were determined by Gradient Descent method, and all constraints were treated with Logarithmic Barrier Functioning. As a result, the minimum section sizes of members were determined, and cyclic performance tests were performed to determine whether the optimized chairs were strong enough to carry the acceptable loads. According to the results, member section size of both beech and pine chairs could be significantly reduced. The reduction was 32 % in the total weight and volume for beech chairs while 16 % for pine chairs without sacrificing the performance required for domestic usage by ALA. In conclusion, the method used is suitable for the optimization of furniture frames, making it lighter and reducing the material costs.  http://revistas.ubiobio.cl/index.php/MCT/article/view/5353Chair performance testscyclic strengthengineering designFagus orientalisoptimizationPinus sylvestris
spellingShingle Ersan Güray
Erkan Ceylan
Ali Kasal
Weight–strength optimization of wooden household chairs based on member section size
Maderas: Ciencia y Tecnología
Chair performance tests
cyclic strength
engineering design
Fagus orientalis
optimization
Pinus sylvestris
title Weight–strength optimization of wooden household chairs based on member section size
title_full Weight–strength optimization of wooden household chairs based on member section size
title_fullStr Weight–strength optimization of wooden household chairs based on member section size
title_full_unstemmed Weight–strength optimization of wooden household chairs based on member section size
title_short Weight–strength optimization of wooden household chairs based on member section size
title_sort weight strength optimization of wooden household chairs based on member section size
topic Chair performance tests
cyclic strength
engineering design
Fagus orientalis
optimization
Pinus sylvestris
url http://revistas.ubiobio.cl/index.php/MCT/article/view/5353
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AT alikasal weightstrengthoptimizationofwoodenhouseholdchairsbasedonmembersectionsize