Abstract
This chapter deals with the finite element simulation on bolted connections between Cold-Formed Steel (CFS) strips and Hot Rolled Steel (HRS) plates under static shear loading. Shear load is applied to the Finite Element (FE) model by imposing incremental displacements to the end of the CFS strip, along the longitudinal direction of the specimen. Throughout the course of loading, the HRS plate and the root of the bolt are fixed in space. As the model is highly nonlinear, the full Newton–Raphson (N–R) procedure is employed to obtain the solution after each displacement increment. The FE model is first calibrated with the results from lap shear test. Both G300 and G550 cold-formed steel strips of different yield strengths and thicknesses are considered. The CFS strip is bolted to the HRS plate by a grade 8.8 bolt of 12 mm diameter. The close agreement between the experimental and simulation results indicate the accuracy of the finite element model as well as the proposed material curves. By changing the dimensions of the CFS model, three distinct failure modes are identified—bearing failure, shear-out failure, and net-section failure.
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