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首页> 外文期刊>International journal of steel structures >Lateral compression behaviors of thin-walled equilateral triangular tubes
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Lateral compression behaviors of thin-walled equilateral triangular tubes

机译：薄壁等边三角管的侧向压缩行为

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摘要

The paper deals with one important topic in impact engineering - the lateral compression behavior of thin-walled tubes. To study the lateral collapse modes and energy absorption behaviors of equilateral triangular tubes, quasi-static compression experiments were carried out. Crushing modes were revealed by the experiments. Three typical crushing stages characterize the lateral deformation plateaus of equilateral triangular tubes. In simulation, perfect tubes have symmetrical crushing modes. Strengths of the tubes were correctly predicted by the competition between yielding and buckling. Based on the observed crushing modes, plastic models were proposed for each stage to predict the lateral crushing behaviors theoretically. Equilateral triangular tubes have unified energy absorbing mechanisms, including five plastic hinges and one traveling plastic hinge. Plastic models have been constructed to predict the mean crushing forces and evaluate the energy absorption efficiency of the equilateral triangular tubes.
机译：本文涉及冲击工程中的一个重要主题-薄壁管的横向压缩行为。为了研究等边三角管的横向塌陷模式和能量吸收行为，进行了准静态压缩实验。实验揭示了破碎模式。三个典型的破碎阶段表征了等边三角管的横向变形平稳期。在仿真中，完美的管具有对称的破碎模式。通过屈服和屈曲之间的竞争可以正确预测管子的强度。基于观察到的破碎模式，提出了每个阶段的塑性模型，以从理论上预测侧向破碎行为。等边三角形管具有统一的能量吸收机制，包括五个塑料铰链和一个行进塑料铰链。已经建立了塑料模型来预测平均挤压力并评估等边三角管的能量吸收效率。

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  • 来源
    《International journal of steel structures》 |2015年第4期|785-795|共11页
  • 作者

    Fan Hualin; Hong Wu; Sun Fangfang; Xu Ying; Jin Fengnian;

  • 作者单位

    Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China|PLA Univ Sci & Technol, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China;

    PLA Univ Sci & Technol, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China;

    PLA Univ Sci & Technol, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China|Hohai Univ, Coll Mech & Mat, Lab Struct Anal Def Engn & Equipment, Nanjing 210098, Jiangsu, Peoples R China;

    PLA Univ Sci & Technol, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China;

    PLA Univ Sci & Technol, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    equilateral triangular tube; lateral compression; crushing mechanism; plastic analysis;

    机译：等边三角管;侧向受压;破碎机理;塑性分析;

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