Investigating the Performance of Modern Concentrically Braces during Modal Analysis in the Frequency Domain with the Finite Element Method

The use of steel braces in the structure is the most practical method to increase the lateral stiffness of the building. Nowadays, all kinds of modern braces are used in the structure. Gate and Inverted V braces are very common and modern. In the present paper, using ABAQUS software and Finite Element Method (FEM), Gate and Inverted V braces were modelled and compared. The material in the modelling is St۳۷ type. In the present paper, the structures were analyzed in the frequency domain during modal analysis. The present paper was verified with the results of the paper by Mosalman et al. The results showed that the Inverted brace has lower von Mises stress (equal to ۲۹.۱۸% reduction) and displacement (equal to ۱۶.۶۹% reduction) compared to the Gate brace. Also, the Gated brace has a lower natural frequency (very low reduction) and eigenvalue (equal to ۱۹.۴۶% reduction) compared to the Inverted V brace.

Keywords:

Gate brace , Inverted V brace , Modal analysis in the frequency domain , structural bracing systems