Analytical modeling of thin-walled box T-joints

A general analytical method for computing the joint stiffness from the sectional properties of the members that form the joint is derived using Vlasov\'s thin-walled beam theory. The analytical model of box T-joint under out-of-plane loading is investigated and validated using shell finite element results and experimental data. The analytical model of the T-joint is implemented in a beam finite element model using a revolute joint element. The out-of-plane displacement computed using the beam-joint model is compared with the corresponding shell element model. The results show close correlation between the beam revolute joint model and shell element model.