Öz
- Finite Element Method (FEM), is a
numeric method which is used to analyze material or systems behavior to
external factors. In this study, three dimensional (3D) finite element analyses
(FEA) of oriental beech woods’ compression behavior was performed. Defect free
compression samples, which were simulated, were prepared 20*20*60mm of sizes
through longitudinal (L), radial (R) and tangential (T) directions. All the
samples were conditioned at 20ºC and 65%RH using conditioning chamber.
Compression tests (CT), were performed using Universal Test Machine (UTM) and
stress and deformations curves were obtained by bi-axial extensometer. FEA of
compression models were performed using 3D orthotropic material properties.
Load deformation curves were obtained using deformation values of FE Models and
then these were matched against the curves obtained by CT. As a result, it is
concluded that created 3D FE Models showed real-like behavior values.
Anahtar Kelimeler
Kaynakça
- [1]. Guntekin, E., (2004). Finite element analysis of doweled furniture corner joints, Süleyman Demirel Üniversitesi Orman Fakültesi Dergisi, A(1), 159-169. [2]. Zienkiewicz, O.C., and Taylor, R.L., (1989). The finite element method, McGraw-Hill Co., New York. [3]. Mackerle, J., (2005). Finite element analyses in wood research: a bibliography, Wood Science and Technology, 39(7), 579-600. [4]. Hong, J., Lee, J., Yeo, H., Kim, C., Pang, S., and Oh, J., (2015). Parametric study on the capability of three-dimensional finite element analysis (3D-FEA) of compressive behaviour of Douglas fir, Holzforschung, 70(6), 539-546. [5]. Jamaludin, M.A., (1995). Prediction of the strength of typical furniture and its immediate members, Ph.D. Dissertation, Mississippi State University, MS. [6]. Bodig, J., and Jayne, B.A., (1993). Mechanics of wood and wood composites. Krieger Publishing Company, Malabar, Florida. [7]. Mihailescu, T., (1998). An investigation of the performance of mortise and tenon joints using the finite element method, Ph.D dissertation, Buckinghamshire Chilterns University. [8]. Guan, Z.W., and Rodd, P.D., (2000). A three-dimensional finite element model for locally reinforced timber joints made with hollow dowel fasteners, Can. J. Civil Eng, 27, 785-797. [9]. Hong, J., and Barrett, D., (2010). Three-dimensional finite element modeling of nailed connections in wood, Journal of Structural Engineering, 136(6), 715-722. [10]. Al-Dabbagh, A., Goodman, J.R., and Boding, J., (1972). Finite element method for wood mechanics, Journal of the Structural Division, 98(3), 569-586. [11]. Tabiei, A., and Wu, J., (2000). Three-dimensional nonlinear orthotropic finite element material model for wood, Composite Structures, 50, 143-149. [12]. Gaff, M., Gašparík, M., Borůvka, V., and Babiak, M., (2015). Simulating stresses associated with the bending of wood using a Finite Element Method, BioResources, 10(2), 2009-2019. [13]. TS 2472, (2005). Wood, Determination of density for physical and mechanical tests. Turkish Standard Institute, Ankara. [14]. TS 2471, (2005). Wood, Determination of moisture content for physical and mechanical Tests, Turkish Standards Institution, Ankara. [15]. Guntekin, E., Yılmaz Aydın, T., and Aydın, M., (2016). Elastic constants of oriental beech (Fagus orientalis) and sessile oak (Quercus petraea), International Forestry Symposium, 645-649. [16]. Efe, H., and Çağatay, K., (2011). Determination of some physical and mechanical properties of various wood materials, Journal of Polytechnic, 14(1), 55-61.
Öz
Sonlu Elemanlar Metodu malzeme ve
sistemlerin dış etkenlere karşı davranışlarının analizinde kullanılan nümerik
bir yöntemdir. Bu çalışmada doğu kayını (Fagus
orientalis L.) odununun basma davranışının üç boyutlu sonlu elemanlar
analizi yapılmıştır. Simülasyonu gerçekleştirilen basma örnekleri 20x20x60mm
ölçülerde lif, radyal ve teğet yönlerde hazırlanmıştır. Deney örnekleri
hazırlanırken düzgün lifli, budaksız ve kusursuz olmasına dikkat edilmiştir.
Deney önekleri 20 sıcaklık ve %65 bağıl nem seviyesinde kondisyonlanmıştır.
Basma testleri universal test cihazında gerçekleştirilmiş ve bi-aksiyal
ekstensometre kullanılarak gerilme deformasyon eğrileri elde edilmiştir. Basma
modellerinin sonlu elemanlar analizi üç boyutlu ortotropik malzeme
parametreleri kullanılarak gerçekleştirilmiştir. Sonlu elemanlar modellerinden
elde edilen deformasyon miktarları ile yük deformasyon eğrileri elde edilmiş ve
basma testlerinden elde edilen eğrilerle karşılaştırılmıştır. Oluşturulan üç
boyutlu sonlu elemanlar modellerinin gerçek davranışa yakın değerler verdiği
ortaya koyulmuştur
Anahtar Kelimeler
Kaynakça
- [1]. Guntekin, E., (2004). Finite element analysis of doweled furniture corner joints, Süleyman Demirel Üniversitesi Orman Fakültesi Dergisi, A(1), 159-169. [2]. Zienkiewicz, O.C., and Taylor, R.L., (1989). The finite element method, McGraw-Hill Co., New York. [3]. Mackerle, J., (2005). Finite element analyses in wood research: a bibliography, Wood Science and Technology, 39(7), 579-600. [4]. Hong, J., Lee, J., Yeo, H., Kim, C., Pang, S., and Oh, J., (2015). Parametric study on the capability of three-dimensional finite element analysis (3D-FEA) of compressive behaviour of Douglas fir, Holzforschung, 70(6), 539-546. [5]. Jamaludin, M.A., (1995). Prediction of the strength of typical furniture and its immediate members, Ph.D. Dissertation, Mississippi State University, MS. [6]. Bodig, J., and Jayne, B.A., (1993). Mechanics of wood and wood composites. Krieger Publishing Company, Malabar, Florida. [7]. Mihailescu, T., (1998). An investigation of the performance of mortise and tenon joints using the finite element method, Ph.D dissertation, Buckinghamshire Chilterns University. [8]. Guan, Z.W., and Rodd, P.D., (2000). A three-dimensional finite element model for locally reinforced timber joints made with hollow dowel fasteners, Can. J. Civil Eng, 27, 785-797. [9]. Hong, J., and Barrett, D., (2010). Three-dimensional finite element modeling of nailed connections in wood, Journal of Structural Engineering, 136(6), 715-722. [10]. Al-Dabbagh, A., Goodman, J.R., and Boding, J., (1972). Finite element method for wood mechanics, Journal of the Structural Division, 98(3), 569-586. [11]. Tabiei, A., and Wu, J., (2000). Three-dimensional nonlinear orthotropic finite element material model for wood, Composite Structures, 50, 143-149. [12]. Gaff, M., Gašparík, M., Borůvka, V., and Babiak, M., (2015). Simulating stresses associated with the bending of wood using a Finite Element Method, BioResources, 10(2), 2009-2019. [13]. TS 2472, (2005). Wood, Determination of density for physical and mechanical tests. Turkish Standard Institute, Ankara. [14]. TS 2471, (2005). Wood, Determination of moisture content for physical and mechanical Tests, Turkish Standards Institution, Ankara. [15]. Guntekin, E., Yılmaz Aydın, T., and Aydın, M., (2016). Elastic constants of oriental beech (Fagus orientalis) and sessile oak (Quercus petraea), International Forestry Symposium, 645-649. [16]. Efe, H., and Çağatay, K., (2011). Determination of some physical and mechanical properties of various wood materials, Journal of Polytechnic, 14(1), 55-61.
Ayrıntılar
| Konular | Mühendislik |
|---|---|
| Bölüm | Makaleler |
| Yazarlar | |
| Yayımlanma Tarihi | 15 Aralık 2017 |
| Yayımlandığı Sayı | Yıl 2017 Cilt: 6 Sayı: 3 |