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Dynamic Responses of Cellular Metal-Filled Steel Beam-Column Joint Under Impact Loading

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Abstract

Taking the excellent energy absorption performances of cellular structures into consideration, three beam-column steel joints are proposed to analyze the effect of cellular metallic fillers on impact mechanical responses of beam-column joints. Based on the existing experimental results, the finite element models of the associated joints are established by using finite element method software. The deformation mode, the bearing capacity and energy absorption performance of various joints subjected to impact loadings with the loading velocities from 10 to 100 m/s are analyzed, respectively. The dynamic responses of cellular metal-filled beam-column joints are quantitatively analyzed by means of displacements of central region, nominal impacting stress and energy absorption efficiency. The results can be concluded that the filling of cellular filler weakens the stress concentration on joints, alleviates the occurrence of tearing in connection region among column and beam, and reduces the displacement caused by impact loading. Energy absorption efficiency of filled joints subjected to impact loading increases as the impacting velocity increases, and the cellular metallic filler improves their impact resistance of beam-column joints. The energy absorption efficiency of fully filled joints is superior to that of others. This study can provide a reference for steel structural design and post-disaster repair under extreme working conditions.

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Authors and Affiliations

  1. College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601, China

    Kewei Ding  (丁克伟) & Wei Ma  (马巍)

  2. Provincial Key Laboratory for Architectural Structure and Underground Engineering, Anhui Jianzhu University, Hefei, 230601, China

    Jianhua Liu  (刘建华) & Jianwei Ren  (任建伟)

Authors
  1. Kewei Ding  (丁克伟)
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  2. Jianhua Liu  (刘建华)
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  3. Jianwei Ren  (任建伟)
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  4. Wei Ma  (马巍)
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Corresponding author

Correspondence to Kewei Ding  (丁克伟).

Additional information

Foundation item: the National Natural Science Foundation of China (No. 11472005), the National Key Research and Development Project (No. 2016YFC0701507-2), and the Natural Science Foundation of Anhui Province (No. 1908085ME173)

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Ding, K., Liu, J., Ren, J. et al. Dynamic Responses of Cellular Metal-Filled Steel Beam-Column Joint Under Impact Loading. J. Shanghai Jiaotong Univ. (Sci.) 25, 384–393 (2020). https://doi.org/10.1007/s12204-020-2160-9

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  • DOI: https://doi.org/10.1007/s12204-020-2160-9

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