Techno Press


Steel and Composite Structures   Volume 29, Number 6, December25 2018, pages 771-783
DOI: http://dx.doi.org/10.12989/scs.2018.29.6.771
 
Topology optimization of steel plate shear walls in the moment frames
Mohammad Hadi Bagherinejad and Abbas Haghollahi

 
Abstract     [Full Text]
    In this paper, topology optimization (TO) is applied to find a new configuration for the perforated steel plate shear wall (PSPSW) based on the maximization of reaction forces as the objective function. An infill steel plate is introduced based on an experimental model for TO. The TO is conducted using the sensitivity analysis, the method of moving asymptotes and SIMP method. TO is done using a nonlinear analysis (geometry and material) considering the buckling. The final area of the optimized plate is equal to 50% of the infill plate. Three plate thicknesses and three length-to-height ratios are defined and their effects are investigated in the TO. It indicates the plate thickness has no significant impact on the optimization results. The nonlinear behavior of optimized plates under cyclic loading is studied and the strength, energy and fracture tendency of them are investigated. Also, four steel plates including infill plate, a plate with a central circle and two types of the multi-circle plate are introduced with equal plate volume for comparing with the results of the optimized plate.
 
Key Words
    topology optimization; steel plate shear wall; moment frame; sensitivity-based method; method of moving asymptotes; SIMP method; perforated plate
 
Address
Faculty of Civil Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran.
 

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