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Modeling of metal-plate-connected wood truss joints Public Deposited

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  • A commercially available, three-dimensional finite-element analysis software was used to model the load-displacement behavior of metal-plate-connected (MPC) joints in wooden trusses. Model features included consideration of material properties, teeth-to-grain-to-direction-of-force orientation, wood-to-wood interaction, and gaps between wood members. To simulate wood-to-plate interaction, the main feature of the model, each tooth of the metal plate is represented by one set of three spring elements. Each spring element accounts for tooth-wood behavior (stiffness) in one major plate direction: parallel to slots, perpendicular to slots in the plane of the plate, and perpendicular to the plane of the plate. For each element, nonlinear load-slip (stiffness) curves are defined based on tension splice joint tests at various teeth-to-grain orientations. One advantage of the spring-element-based approach is that once incorporated in the model, the per-tooth stiffness need not be adjusted for different loading conditions applied later to the joint model The load-displacement (L-D) results from the model compared very well to the experimental results from tensile and bending tests of splice joints with several different teeth-to-grain orientations. For the investigated plate size, the governing factor for joint behavior was the plate-wood interaction (spring elements). Several possible model simplifications were investigated. Models with lumped teeth properties predict joint L-D behavior reasonably well.
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  • Vatovec, M., Miller, T. H. and Gupta, R. 1996 Modeling of metal-plate-connected wood truss joints. Transactions of the American Society of Agricultural Engineers, 39(3):1101-1111.
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  • 39
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  • 3
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  • Research supported by the Center for Wood Utilization Research Grants (USDA Special Grant), Department of Forest Products, College of Forestry, Oregon State University, Corvallis.
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  • description.provenance : Made available in DSpace on 2013-08-28T22:37:43Z (GMT). No. of bitstreams: 1 GuptaRakeshForestryModelingMetalPlate.pdf: 2083156 bytes, checksum: 1e89693ea160a10e3c6bc99cede45f5d (MD5) Previous issue date: 1996-05
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