Document Type : Research Paper
Authors
1 M.Sc., graduate student, Department of wood and paper Engineering, College of Agriculture and Natural Resources, Karaj branch of Islamic Azad University
2 Associate Professor, Department of wood and paper Engineering, College of Agriculture and Natural Resources, Karaj branch of Islamic Azad University
Abstract
In this study was to evaluate the impact of the truss structure on stiffness and stress distribution in the truss structural members. Made and synchronizes this structures with any Populus_ Nigra lumbers, in finally made 44 truss structure with 11 varying samples and 4 replicates. were used by two joint like friction joints was created with Glue stick and dual joint was created with nails to the 4.5 cm and calculate the resistance trusses structures by mechanical testing machine with 12.5 mm/min loading speed and 3.5 KN than mechanical test results showed, Hip Girder truss most resistance stress distribution and were the least impact on the strength and distribution of tension truss structure is significant in 95%. To show the stress distribution on the members, modeling software was AutoCAD, Catia and finite element analysis software was ANSYS. In finally the results show that maximum stress concentration, failure to engage in experimental mode.
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Main Subjects
2)Ellegaard (2006). Finite-element modeling of timber joints with punched, metal plate fasteners. Journal of Structural Engineering, 132(3), 409417.
3)Freilingor (1997). Cyclic Performance of Wood Truss Joints. Proct: Structural Congress XV AM. Society of Civil Engineer, Restart, VA, , 939943.
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