Structural analyses of wooden chairs by finite element method (FEM) and assessment of the cyclic loading performance in comparison with allowable design loads
Keywords:Chair strength, cyclic loading, finite element analysis, structural analysis, furniture engineering design, acceptable design loads
Tests were carried out to investigate the cyclic loading performance of chairs constructed of Scotch pine (Pinus sylvestris) and Oriental beech (Fagus orientalis). Totally, 30 real size chairs were constructed and assembled with polyvinyl acetate adhesive. Chairs were tested under 3 cyclic loading directions; namely, front to back, back to front, and backrest according to American Library Association specifications, and obtained loading performances of chairs were crosschecked with allowable design load levels that were specified in American Library Association. Additionally, specimens were analyzed as structures by using finite element method in order to obtain axial, shear, and bending stresses acting on each member under loadings and compare to these values with design stresses. As a result, it was concluded that finite element method analyses achieves reasonable estimates for strength performances and failure behaviors of chairs. Depending on allowable design loads by American Library Association; chairs constructed of beech could meet the medium service for front to back and back to front loading, while heavy service for backrest loading. In the case of pine chairs; they could meet the medium service for front to back and back to front loading, while light service for backrest loading.
American Society for Testing and Materials. 2000. ASTM D143-94: Standard Test Methods for Small Clear Specimens of Timber. ASTM International. West Conshohocken, PA, USA. https://doi.org/10.1520/D0143-94
American Society for Testing and Materials. 2003. ASTM 4442-92: Standard Test Methods for Direct Moisture Content Measurement of Wood and Wood-Base Materials. ASTM International. West Conshohocken, PA, USA. https://doi.org/10.1520/D4442-92R03
Eckelman, C.A. 1982. The Use of Performance Tests and Quality Assurance Programs in the Selection of Library Chairs. American Library Association.
Eckelman, C.A. 1988. Performance testing of furniture. Part II. A multipurpose universal structural performance test method. For Prod J 38(4): 13-18. https://forestprodjournals.org/loi/fpro
Eckelman, C.A. 1995a. Library Chairs: An Overview of the ALA Test Method with Test Reports on Side Chairs. American Library Association.
Eckelman, C.A. 1995b. Performance Test Concepts. American Library Association.
Eckelman, C.A. 1999. Performance testing of side chairs. Eur J Wood Prod 57: 227–234. https://doi.org/10.1007/s001070050047
Eckelman, C.A. 2003. Textbook of Product Engineering and Strength Design of Furniture. In Textbook, P. University, ed., Purdue University, West Lafayette / Indiana, USA.
Eckelman, C.A.; Erdil, Y.Z. 2001. General services administration (GSA) upholstered furniture test method. FNAE 80–214: A description of the method with drawings. West Lafayette / Indiana, USA.
Forest Products Laboratory. USDA. 2010. Wood Handbook: Wood as an Engineering Material. USDA - General Technical Report. https://doi.org/10.2737/FPL-GTR-113
Gustafsson, S.I. 1995. Furniture design by use of the finite element method. Eur J Wood Prod 3(4): 257–260. https://doi.org/10.1007/s001070050084
Gustafsson, S.I. 1997. Optimizing ash wood chairs. Wood Sci Technol 31(4): 291–301. https://doi.org/10.1007/BF00702616
Langova, N.; Reh, R.; Igaz, R.; Kristak, L.; Joscak, P. 2019. Construction of Wood-Based Lamella for Increased Load on Seating Furniture. Forests 10(525). https://doi.org/10.3390/f10060525
Kasal, B.; Pullela, S.V. 1995. Development of analytical models for furniture, Raleigh. North Carolina State University, Furniture Manufacturing and Management Center, Raleigh, NC.
Kasal, A.; Birgul, R.; Erdil, Y.Z. 2006. Determination of the strength performance of chair frames constructed of solid wood and wood composites. For Prod J 56(7–8): 55-60. https://forestprodjournals.org/loi/fpro
Kasal, A.; Kuşkun, T.; Haviarova, E.; Erdil, Y.Z. 2016a. Static Front to Back Loading Capacity of Wood Chairs and Relationship between Chair Strength and Individual Joint Strength. BioResources 11(4): 9359-9372. https://doi.org/10.15376/biores.11.4.9359-9372
Kasal, A.; Smardzewski, J.; Kuskun, T.; Erdil, Y.Z. 2016b. Numerical analyses of various sizes of mortise and tenon furniture joints. BioResources 11(3): 6836-6853. https://doi.org/10.15376/biores.11.3.6836-6853
Kiliç, H.; Kasal, A.; Kuşkun, T.; Acar, M.; Erdil, Y.Z. 2018. Effect of tenon size on static front to back loading performance of wooden chairs in comparison with acceptable design loads. BioResources 13(1): 256-271. https://doi.org/10.15376/biores.13.1.256-271
Kuskun, T.; Kasal, A.; Haviarova, E.; Kilic, H.; Uysal, M.; Erdil, Y.Z. 2018. Relationship between static and cyclic front to back load capacity of wooden chairs, and evaluation of the strength values according to acceptable design values. Wood Fiber Sci 50(4): 402-410. https://doi.org/10.22382/wfs-2018-052
Likos, E.; Haviarova, E.; Eckelman, C.A.; Erdil, Y.Z.; Ozcifci, A. 2013. Technical note: Static versus cyclic load capacity of side chairs constructed with mortise and tenon joints. Wood Fiber Sci 45(2): 223-227. https://wfs.swst.org/index.php/wfs/article/view/41
Smardzewski, J. 1998. Numerical analysis of furniture constructions. Wood Sci Technol 32(4): 273-286. https://doi.org/10.1007/BF00702895
Smardzewski, J. 2016. Numerical analysis of furniture constructions. Wood Sci Technol 32(4): 273-286. https://doi.org/10.1007/BF00702895
Rapid Interactive Structural Analysis. RISA – 3D Version 4.1. 2000. RISA Technologies. Software. 26632 Towne Centre Dr., Suite 210 Foothill Ranch, CA 92610., Lake Forest, California / United States.
Tankut, N.; Tankut, A.N.; Zor, M. 2014. Finite Element Analysis of Wood Materials. Drv. Ind. 65(2): 159-171. https://doi.org/10.5552/drind.2014.1254
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