FE-based Analysis of Dynamic behavior of Beam-Column Connection of Steel Frame

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (18) : 51-56.

WANG Ning, CHEN Ying, HUO Jingsi

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Abstract

Two kinds of widely used steel moment connections (Welded Unreinforced Flange-Welded Web and Welded Unreinforced Flange-Bolted Web) were modeled according to finite element software ABAQUS, taking bolt pretention force, contact, nonlinear large deformation and strain rate effect into consideration. This model was used to simulate beam-column substructures under impact load, and it shows that ABAQUS/explicit solver presents high precision and good stability, as a result, the finite element results of failure mode and time histories of impact load and deformation agree fairly well with experimental results. Under large deformation the most significant stress concentration located at the weld access hole, where is the initiation of the whole component. The dynamic response and internal force development of beam-column substructures are obtained by simulation analyses, this numerical analysis method hence provides the basis for studying working mechanism of progressive collapse of steel structures and for rationally accessing the ability of resisting collapse deformation and energy dissipation.

Key words

beam-column connection / finite element simulation / dynamic behavior / ductility / strain rate effect

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WANG Ning, CHEN Ying, HUO Jingsi. FE-based Analysis of Dynamic behavior of Beam-Column Connection of Steel Frame[J]. Journal of Vibration and Shock, 2015, 34(18): 51-56

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