Model for Nonlinear Behavior of Bolted Joints Under Bending/Tension Loading

by Raymundo Davalos-Sotelo, Inst de Ecologia, Mexico,
Patrick J. Pellicane, Inst de Ecologia, Mexico,

Abstract: A mathematical model to predict the load-deformation relationship of single-bolted connections in wood structures subjected to bending/tension loading is described. The model accounts for connections which exhibit a nonlinear load-deformation pattern from the origin. Analyses are made using a plane-stress, two-dimensional, orthotropic finite element model. An incremental-iterative secant stiffness approach is employed to trace the nonlinear behavior. Two wood species are included in the experimental phase of this study: a softwood (lodgepole pine) and a hardwood (hard maple). A series of experiments were made to verify the predictions of the model.

Subject Headings: Mathematical models | Deformation (mechanics) | Structural models | Wood structures | Load factors | Finite element method | Nonlinear response

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