The aim of this paper is to investigate the collapse behavior of square thin-walled columns with various inner stiffeners under combined load. When the column crashes into the inclined rigid wall, the combined load of axial compression and bending is acting on and the column undergoes both axial and bending collapse simultaneously. In this paper, the effect of various inner stiffeners on collapse behaviors of square thin-walled columns under combined load is considered using numerical simulation. Mean crushing load and mean crushing load per unit mass of square thin-walled columns with various inner stiffeners are compared and the critical load angle of rigid wall which changes the dominant collapse mode of column is also investigated. As a result, if more inner stiffener is applied, mean crushing load of column under combined load increases, but the critical load angle decreases; in other word, dominant collapse mode from axial to bending changes in smaller incline angle of rigid wall. The column with 2 diagonal type stiffeners can absorb up to 200% more energy per unit mass than the square column without stiffener. The numerical simulation program PAM-CRASH is used for this research.
Collapse behavior of square thin-walled columns with various inner stiffeners under combined load
Unfallverhalten von quadratischen, aus dünnem Metall gefertigten Säulen mit innenliegenden Versteifungsmodulen unter Aufgabe von Lastkollektiven
2002
7 Seiten, 9 Bilder, 1 Tabelle, 8 Quellen
Conference paper
Storage medium
English
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