L, T 형상 결합 구조물의 동적 거동에 관한 고찰
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The adequacy of modeling shell structured channels by beam elements for stiffness evaluation using finite elements calculation was investigated. Normal modes analysis of beam and shell models were performed for various types of channels with L and T shaped joints. The results of the analysis were compared to fmd out key geometry
factors which cause the differences between the modes. The geometry factors considered are joint angle, channel length, thickness and area ratio of the hollow section to the f1Iled section.