ENGINEERING FAILURE ANALYSIS, cilt.184, 2026 (SCI-Expanded, Scopus)
Masonry buildings represent inherently complex construction systems, with their seismic response behavior still not fully understood. Ensuring life safety in masonry structures subjected to seismic excitations is of paramount importance, which underscores the need for advanced numerical modeling and comprehensive analysis. This requirement is particularly critical due to the inadequate seismic resistance observed in certain key aspects, including mechanical properties and the number of stories. Consequently, numerical studies have become indispensable for understanding the seismic behavior of low-rise buildings. This paper addresses this gap through a numerical investigation into the seismic performance of unreinforced masonry (URM) buildings with varying floor counts. The analysis integrates four material properties derived from experimental data available in the literature. For each building, a detailed three-dimensional (3D) continuum Finite Element Model (FEM) is developed, employing nonlinear Time History analysis as the primary analytical method. The Concrete Damage Plasticity (CDP) model is applied to simulate the masonry walls and concrete components. This study encompasses modal analysis, static response analysis, and seismic response analysis of the buildings. The findings, based on both undamaged and damaged models, are carefully evaluated and compared, covering modal behaviors, natural frequency values, mode shapes, displacement and stress distributions, and damage patterns. Furthermore, the research seeks to offer insights into how these structural dynamic parameters affect the structural response and failure modes under various seismic loads. Finally, conclusions and recommendations are provided for addressing damage in masonry building walls.