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Lateral-torsional buckling analysis of cantilever beam with tip lateral elastic brace under uniform and concentrated load

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Abstract

The studies on the lateral-torsional buckling of cantilever steel beam with tip lateral elastic brace are rarely reported. The total potential energy is first established for the lateral-torsional buckling of cantilever steel beam with tip lateral elastic brace under uniform and concentrated load. The modal trial function of the lateral displacement and torsional angle are expressed as trigonometric function combination with six terms. By introducing new dimensionless parameters, the analytical solution of the dimensionless buckling equation for the lateral-torsional buckling of cantilever steel beam with tip lateral elastic brace is obtained. With the help of 1stOpt software which is mathematical optimization analysis software, the non-dimensional critical moment formula of the lateral-torsional buckling of cantilever beam with tip lateral elastic brace is obtained. Then, the accuracy of the formula is verified by ADINA finite element software. The results show that the given critical moment formula is of high accuracy. It provides convenient and simple design method for practical engineering.

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Authors and Affiliations

  1. School of Architecture & Civil Engineering, Nanjing Institute of Technology, Nanjing, 211167, China

    Wen-Fu Zhang

  2. Heilongjiang Key Laboratory of Disaster Prevention, Mitigation and Protection Engineering, College of Civil and Architecture Engineering, Northeast Petroleum University, Daqing, 163318, China

    Wen-Fu Zhang, Ying-Chun Liu, Gui-Lan Hou, Ke-Shan Chen, Jing Ji, Yun Deng & Shi-Lin Deng

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  1. Wen-Fu Zhang
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  2. Ying-Chun Liu
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  3. Gui-Lan Hou
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  4. Ke-Shan Chen
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  5. Jing Ji
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  6. Yun Deng
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  7. Shi-Lin Deng
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Correspondence to Wen-Fu Zhang or Ying-Chun Liu.

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Zhang, WF., Liu, YC., Hou, GL. et al. Lateral-torsional buckling analysis of cantilever beam with tip lateral elastic brace under uniform and concentrated load. Int J Steel Struct 16, 1161–1173 (2016). https://doi.org/10.1007/s13296-016-0052-5

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  • DOI: https://doi.org/10.1007/s13296-016-0052-5

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