Computer Simulation of Mechanical Performance of Some Sudanese and Exotic Wood Materials and Their Composite under Load
The present work was conducted to simulate mechanical behavior of 12% moisture content Ana tree and Red Oak wood material and their composite under load using Analysis of Structures Computer Program (ANSYS 11). Wood blocks with dimensions 1.2m×0.2m×0.2m were modeled in the program then defined and meshed. Each model was constrained at its two ends and a distributed load of 500 Kilo Pascal (KPa) was applied on its upper surface. The solution of linear problem was run and calculation control in addition to result processing was accomplished within the Post Processor (POST1). Deformed shapes, shear stresses and von-Mises stress were displayed. The results showed that wood of Ana tree demonstrated more deformed shape as compared with Red Oak species and the composite. The highest shear stress on XY plane was shown by the composite (21374 Pascal), whereas the lowest shear stress on this plane was recorded by Ana tree (1529 Pa). In case of shear stress in YZ plane, the Red Oak recorded 8692 Pa as the highest value, while composite showed 7785 Pa as the lowest value. The highest shear stress in XZ plane was demonstrated by Red Oak with value of 28834 Pa and the lowest shear stress in such plane was 22660 Pa recorded by the composite. As far as records of von-Mises stress are concerned, composite and Ana tree wood showed the highest and lowest values as 144468 Pa and 135914 Pa respectively.
Computer Simulation, Wood Composite, Mechanical Performance, Shear Stress, Von-Mises Stress
Alexandre C. Ali. 2011. Physical-Mechanical Properties and Natural Durability of Lesser Used Wood Species from Mozambique. Doctoral Thesis Swedish University of Agricultural Sciences Uppsala.
ANSYS 11.0 Documentation. ANSYS, Inc.
Elzaki, O. Taha and Khider, T. Osman. 2012. Physical and Mechanical Properties of Cupressus lusitanica as a Potential Timber Tree for Sudan. Journal of Forest Products & Industries, 2(1), 43 – 46, ISSN: 2325.
Elzaki, O. Taha and Khider, T. Osman. 2013. Strength Properties of Ailanthus Excelsa Roxb. (Tree of Heaven) from Western Sudan. Journal of Applied and Industrial Sciences, 2013, 1 (2): 38-40, ISSN: 2328-4609.
Green David W, Winandy Jerrold E, Kretschmann David E (1999) Mechanical properties of wood. USDA (editor) Wood handbook: wood as an engineering material. Madison, USDA Forest Service, Forest Products Laboratory. General Technical Report; pp. 4.1-4.45.
Ishengoma, R. C., Gillah, P. R., Amartey, S. A. and Kitojo, D. H. (2004). Physical, mechanical and natural decay resistance properties of lesser known and lesser utilized Diospyros mespiliformis, Tyrachylobium verrucosum and Newtonia paucijuga timber species from Tanzania. Holz Roh Werkst 62: 387-389.
Kretschmann DE (2010a) Mechanical Properties of Wood. Mechanical properties of wood. USDA (editor) Wood handbook: wood as an engineering material. Forest Products Laboratory, United States Department of Agriculture Forest Service, Madison, Wisconsin. pp 5.1-5.46.
Lemmens, R. H. M. J. (2006). Acacia nigrescens Oliv. [Internet] Record from Protabase: Louppe, D., Oteng-Amoako, A. A. and Brink, M. (Editors). PROTA (Plant Resources of Tropical Africa / Ressources végétales de l´ (afrique tropicale).
Moayad B. Zaied, Osman E. Adlan and Mohammed H. Mohammed (2013). Computer simulation to study deformations and stresses distribution on some Sudanese local wood materials under constant external load. PRO LIGNO Vol. 9 N° 4 2013 www.proligno.ro pp. 340-346.
Nasroun, Tageldin H. (2005) Properties and Technology of wood. Aalam Alkutub (Arabic Edition), Reyad, Kingdom Saudia Arabia.
Poku, K., Wu, Q. and Vlosky, R. (2001). Wood properties and their variations within the tree stem of lesser-used species of tropical hardwood from Ghana. Wood and Fiber Science 33 (2): 284-291.
Uetimane Jr, E., Terziev, N and Daniel, G. (2009). Wood anatomy of three lesser known species from Mozambique. IAWA Journal 30 (3): 277- 291.
Uetimane Jr., E. (2010). Anatomy, drying behaviour and mechanical properties of lesser used wood species from Mozambique. The Swedish University of Agricultural Sciences. Department of Forest Products. Doctoral Thesis No. 2010:66. ISBN: 978-91-576-7511-8.
Uetimane Jr, E., Allegretti, O., Terziev, N and Söderström O. (2010). Application of non-symmetrical drying tests for assessment of drying behaviour of ntholo (Pseudolachnostylis maprounaefolia Pax). Holzforschung 64 (3): 363-368.
USDA, United States Development of Agriculture (2010) Wood handbook: wood as an engineering material. Forest Products Laboratory, United States Department of Agriculture Forest Service, Madison, Wisconsin.
Zziwa, A., Kaboggoza, J. R. S., Mwakali, J. A., Banana, A. Y., and Kyeyune, R. K. (2006). Physical and mechanical properties of some less utilized tropical timber tree species growing in Uganda. Uganda Journal of Agricultural Sciences 12 (1): 29-37.