The use of modern bracing systems in steel structures is a common method for increasing the lateral stiffness of the structure. Braces, while reducing the displacement of the steel structure, also contribute greatly to increasing energy dissipation during earthquakes and severe storms. The possibility of repairing, equipping and, if necessary, replacing them after earthquakes and severe storms and damage to the braces is considered one of the advantages of this type of energy dissipation systems. Evaluating the performance of new braces using different analytical methods will show their advantages and disadvantages. Therefore, in the present study, steel frames with diagonal, chevron, gate, knee, rhombus and cross braces were designed using the finite element method and Abaqus software. The braced steel structures were subjected to modal analysis in the frequency domain and their 50 vibration modes were investigated. The results showed that in terms of modal performance parameters including von Mises stress, structural displacement, specific frequency and generalized mass, rhombus braces (26.26% reduction compared to the numerical average of other braces), gate (19.51% reduction), rhombus (12.77% reduction) and knee (11.11%) had the best performance, respectively. Also, the braced steel frames had the best performance in the rotational participation factor parameter in the horizontal, vertical and perpendicular directions with axial brace (0.079), axial brace (0.088) and knee brace (0.051), respectively.