Abstract
A methodology is presented to study the behavior of bolted single shear steel lap connections. The procedure is based on finite element modeling and verified by experimental testing. A large-scale general-purpose finite element computer program is utilized in performing the nonlinear 3D analyses. The entire assembly of the joint, including beam web and flange, fin plate, and bolt shank, is modeled using isoparametric elements. Three-dimensional contact/friction elements based on simple idealization of the unilateral contact elements with orthotropic Coulomb friction are used to model the interface boundary between the bolt and hole. Experimental testing of few selected specimens was conducted to verify the finite element modeling and associated computer analysis procedure. It is demonstrated that the behavior and strength of the joint can be predicted using the proposed finite element model. (Author)