Akademik Veri Yönetim Sistemi
4 th International Civil Engineering & Architecture Conference, Trabzon, Türkiye, 17 - 19 Mayıs 2025, cilt.1, ss.301-308, (Tam Metin Bildiri)
Understanding the dynamic behavior of structures is crucial, especially for evaluating their performance
under seismic dynamic loads. Dynamic characteristics, such as natural frequencies, mode shapes, and damping
ratios, define how structures respond to variable loads. Accurately identifying these parameters is essential for
assessing seismic performance and ensuring structural safety. Modal analysis methods are widely used to
understand and characterize dynamic behavior. This study investigates the dynamic behavior of a building model
created using the finite element method (FEM). The goal is to calculate the building’s dynamic characteristics
through experimental modal analysis (EMA) using displacement data from selected points on one face of the
building and validate these results by comparing them with finite element modal analysis outcomes. A dynamic
load with sweeping frequency was applied to the base of the building model in order to induce torsional effects
and reveal its response at various frequencies. Displacement responses at specific points on each floor were
measured over time, providing essential data for understanding the structure’s behavior. The displacement data
were processed using MATLAB to generate transfer functions, which characterized the building’s dynamic
behavior and identified its modal parameters. The analysis revealed bending and torsional modal frequencies on
the building’s front face, and corresponding mode shapes were constructed using amplitude calculations. The
results showed strong agreement between the finite element and experimental modal analysis methods, confirming
the accuracy and reliability of the proposed approach for determining dynamic characteristics under loading
conditions.