Comparing the Performance of Diagonal, A-Chevron, Gate, Knee, Rhombus and X braces with the Finite Element Method

The use of modern bracing systems is one of the common ways to increase the lateral stiffness of the structure. Evaluating and comparing the performance of new braces, using different analytical methods, will compare their advantages and disadvantages. Therefore, in the present paper, steel frames with Diagonal, A-Chevron, Gate, Knee, Rhombus and X braces will be designing with finite element method (FEM) and ABAQUS software. The braced frames will be subjecting to modal analyses in the frequency domain and ۵۰ vibration modes will be investigating. Validation of modelling and results was confirmed by Li et al.'s paper (۲۰۲۲). The results show that in terms of modal performance parameters including von mises stress, beam displacement in the steel frame, eigenfrequency and generalized mass, Rhombus, Gate, Rhombus and Knee braces will have the best performance, respectively. Steel frames will have the best performance in the participation factor parameter of component type in x, y and z directions with Diagonal, Diagonal and Knee braces, respectively. Also, the steel frames will have the best performance in the participation factor parameter of rotational type in x, y and z directions, respectively with Knee, Diagonal and X braces.

کلیدواژه ها:

Steel Structure ، Structural Bracing System ، Finite element method ، Modal analysis in the frequency domain ، Abaqus Software