ANALYTICAL AND NUMERICAL SOLUTIONS FOR DISTORTIONAL INSTABILITIES OF THIN-WALLED BEAMS UNDER BENDING MOMENT

机译：弯矩作用下薄壁梁变形不稳定性的解析和数值解

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The instability of a thin-walled beam with distortional flattening of a cross-section under bending is studied. An extended beam theory is proposed, and the coupled elastic buckling mode is investigated based on the finite deformation theory of distortion. Critical buckling loads are obtained analytically for a beam with a closed cross-section, and a new buckling mode is observed. To verify the result, numerical calculations are also carried out using FEM.

机译：研究了薄壁梁在弯曲作用下横截面变形扁平化的不稳定性。提出了扩展梁理论，并基于变形的有限变形理论研究了耦合弹性屈曲模式。通过解析获得具有闭合横截面的梁的临界屈曲载荷，并观察到新的屈曲模式。为了验证结果，还使用FEM进行了数值计算。

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来源
《Third International Conference on Coupled Instabilities in Metal Structures CIMS'2000, 3rd, Sep 21-23, 2000, Lisbon-Portugal》|2000年|p.73-80|共8页
会议地点 Lisbon(PT);Lisbon(PT)
作者
K. Takahashi; N. Ishihara; H. Nakamura;
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作者单位

Department of Mechanical Engineering, Keio University, Yokohama, 3-14-1 Hiyoshi Kohoku-ku, Japan;

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会议组织
原文格式 PDF
正文语种 eng
中图分类建筑科学;
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ANALYTICAL AND NUMERICAL SOLUTIONS FOR DISTORTIONAL INSTABILITIES OF THIN-WALLED BEAMS UNDER BENDING MOMENT

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