Steel plate shear walls (SPSWs) are a prevalent, internationally used lateral load resisting system. They have mainly been utilized in buildings in the United States, Canada, and Japan. However, despite their popularity, they also present a few challenges; their hysteretic behavior is pinched, the web plate has negligible stiffness during load reversals, and moment connections are required between the horizontal boundary elements (HBE) and vertical boundary elements (VBE). Ring shaped -steel plate shear walls (RS-SPSWs) are a novel structural system that offer improved seismic performance by mitigating the challenges of conventional SPSWs. A buckling study was performed on RS-SPSWs utilizing finite element analysis. The conclusions of the buckling study can be used to prevent lateral torsional buckling of the RS-SPSW rings, resulting in good hysteretic performance. This paper outlines how non-dimensional slenderness ratios, such as ring radius to ring width, ring radius to plate thickness, and ring width to plate thickness, affect the buckling behavior of RS-SPSW infill panels. The study concludes that the limiting rotation allowable in the quarter-arc segments of the rings before hysteretic performance starts to degrade is 0.08 radians. It was found that setting the ratio of ring width to plate thickness equal to 11 or less limits the quarter-arc ring rotation to be below the limit and lateral torsional buckling was prevented.
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