Research Article Open Access

Evolutionary Structural Optimization of Wind Bracing Connection Plates in Steel Structures

Reza Kasiri1, Saeid Eslamian2, Theodore C. Crusberg3, Kaveh Ostad-Ali-Askari2 and Mohsen Ghane1
  • 1 Islamic Azad University, Iran
  • 2 Isfahan University of Technology, Iran
  • 3 Worcester Polytechnic Institute, United States
American Journal of Engineering and Applied Sciences
Volume 13 No. 3, 2020, 333-346


Submitted On: 25 April 2019
Published On: 15 July 2020

How to Cite: Kasiri, R., Eslamian, S., Crusberg, T. C., Ostad-Ali-Askari, K. & Ghane, M. (2020). Evolutionary Structural Optimization of Wind Bracing Connection Plates in Steel Structures. American Journal of Engineering and Applied Sciences, 13(3), 333-346.


Evolutionary Structural Optimization (ESO) is one of the rules in structural engineering which has received much attention by the researchers. Today, the reduction of construction cost and weight is an important issue in the structure design. The optimization phenomenon is pursuing to fulfill this objective. Thus, presenting a design which could be both safe and economic is of special significance. Despite the valuable researches which have been conducted on optimization of steel structures, the gap of research on ESO of wind bracing connection plates and other metal connections is sensible. The purpose of the present paper is to make an optimal design of these types of connections in the frames with convergent bracing. In this study, the software of Finite Element Method (FEM) of abaqus has been used to design the concentrically (convergent) wind bracing of connection plates based on optimization principles. The Von-Mises stress distribution contour has been presented for two statuses in different angles. In the designed bracing frame, dimensions and thickness of connection plate have been defined as the design variables and the design of optimization is compared with the design of ordinary status and the past works as well. This shows a noticeable reduction in the weight of the optimal designed plate in comparison with the ordinary design.



  • Evolutionary Optimization
  • Steel Structures
  • Convergent Bracing
  • Von-Mises Stress Distribution