en Optimal design Optimal design پژوهشي Research <span style="font-size:11.5pt"><span style="text-justify:inter-ideograph"><span new="" roman="" style="font-family:" times=""><span lang="IT" style="layout-grid-mode:both">A new type of seismic control device is introduced&mdash;the elastoplastic inerter-tuned mass damper&mdash;which omits the conventional viscous damping element and instead incorporates stiffness with elastoplastic behavior. The key objective is to benchmark its earthquake performance against alternative vibration mitigation strategies, including the standard tuned mass damper, the elastoplastic tuned mass damper, and the inerter-tuned mass damper. For each configuration, the design variables are optimized by minimizing the Park&ndash;Ang damage index, thereby maximizing the structure&rsquo;s seismic resilience. A nine-story moment-resisting frame is employed and is modeled with the OpenSees software nonlinearly. Simulation results reveal that the proposed elastoplastic inerter-tuned mass damper surpasses all other examined systems. Specifically, it delivers up to a 38% drop in the global damage index and a 50% damage reduction in the lower stories.</span></span></span></span> Inerter tuned mass damper, Park-Ang damage index, Optimization, Drift ratio 223 244 http://ijoce.iust.ac.ir/browse.php?a_code=A-10-6463-52&slc_lang=en&sid=1 R. Kamgar kamgar@sku.ac.ir 180031947532846002965 180031947532846002965 Yes Department of Civil Engineering, Shahrekord University, Shahrekord, Iran S. Rostami 180031947532846002966 180031947532846002966 No Department of Civil Engineering, Technical and Vocational University (TVU), Tehran, Iran