parametric analysis of axially loaded partially concrete-filled cold-formed elliptical columns subjected to lateral impact load

This research investigates the dynamic behavior of hollow and partially concrete-filled cold-formed steel tubular (pcfcfst) columns that have elliptical cross-sections under simultaneous loading of dynamic lateral impact load and static compressive axial load. utilizing finite element analysis (fea) by the abaqus is studied. in order to confirm the numerical modeling’s precision, the study outcomes are compared to the outcomes of former experimental and numerical investigations. the effect of various factors namely aspect ratio, axial load ratio, impact angle, steel tube wall thickness, and concrete filling ratio on the performance of pcfcfst columns has been examined. the numerical analysis results indicate that specimens with higher concrete filling ratios show greater performance than hollow specimens. the columns’ failure modes are significantly influenced by the impact angle and axial load ratio, particularly when the column aspect ratio is low. surging the steel tube wall thickness from 2.25 mm to 4 mm decreases the maximum displacement by approximately 70%.