Evaluation of Reliability of T-Stub Prestressed Joints Using Numerical Modeling

The T-stub connection, which is considered a screw connection and is usually considered in the semi-rigid connection range, was first simulated in Abaqus finite element software by selecting a laboratory sample of the T-stub screw connection. To determine the validity of the software, and modeling method used in this research. Next, to introduce the structural elements, loading, materials, and type of analysis used in the experiment and also to determine 52 samples of controlled T-Stub connection with executive and design constraints to determine a series of targeted data by changing the geometric configuration and strength The materials of the components of the t-stub connection are discussed, finally, by performing nonlinear analysis in Abaqus finite element software and determining the maximum limit state function of the screw tensile force in terms of random variables such as screw diameter, cross-sectional width, and thickness at two levels of yield and rupture performance. The web plate was analyzed by Monte Carlo statistical method. Results The failure probability (PF) for all samples under both performance levels was zero. This result is due to the fact that when selecting the samples, the condition of no rupture mode was observed in the T-Stub connection. Thus, the specimens of the specified T-Stub connection are of the strong screw type, hence the value of the probability of failure (PF) or the same probability of the screw surrendering in the non-threaded part after submitting the web plate and the screw breaking in the threaded part after rupture, the web plate is equal to zero.