Nonlinear finite-element modeling of intercomponent connections in light-frame wood structures Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/pv63g282r

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  • Nailed connections have nonlinear load-displacement relations. Modeling these connections in an assembled structure would require a great amount of computational time because of the large number of degrees of freedom. Replacing these connections with energetically-equivalent nonlinear springs reduces the number of degrees of freedom, and leads to computational efficiency in full structure models. This study examined four connections that were used in a light-frame structure that was built and tested under simulated wind loads. The connections examined were an exterior wall-to-floor connection, an interior wall-to-roof truss connection, an exterior wall-to-exterior wall connection, and an interior wall-to-exterior wall connection. The details of the four connections were modeled by using the finite-element method as either a two-dimensional plane stress model, or a three-dimensional model. Characteristics from three of the models were compared to experimental results from tests of connections, and the comparison showed good agreement between the connections and the models. The characteristic load-translation and moment-rotation responses of the detailed models were then summarized as computationally efficient springs.
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