首页> 外文会议>International PhD Symposium in Civil Engineering vol.2; 20040616-19; Delft(NL) >Adapting Prokic warping function for thin-walled beam analysis
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Adapting Prokic warping function for thin-walled beam analysis

机译:适应Prokic翘曲功能进行薄壁梁分析

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摘要

Many advanced theories have been developed in order to study shear deformation, torsional warping and buckling of thin-walled beams. Proposed by Prokic in 1990, an enriched kinematical formulation offers additional degrees of freedom related to the longitudinal displacement of selected profile nodes. The objective of this Ph.D. thesis is to adapt Prokic warping function in order to analyze advanced behaviours including warping in general geometry, loading and boundary conditions. Numerical analyses using the finite element method investigate the linear and the buckling behaviour of 3D structures with arbitrary profile shapes. The effects of shear deformation on deflections for short thin beams are investigated. The influence of torsional warping on the structural behaviour and stability of asymmetrical open and closed profiles behaviour shows the ability of the theory to enhance available solutions provided by existing analytical solutions using different warping functions.
机译:为了研究薄壁梁的剪切变形,扭转翘曲和屈曲,已经开发了许多高级理论。由Prokic在1990年提出,一种丰富的运动学公式提供了与所选轮廓节点的纵向位移相关的其他自由度。本博士的目标本文的目的是采用Prokic翘曲函数来分析高级行为,包括一般几何形状,载荷和边界条件下的翘曲。使用有限元方法进行的数值分析研究了具有任意轮廓形状的3D结构的线性和屈曲行为。研究了剪切变形对短细梁挠度的影响。扭转翘曲对不对称开放轮廓和闭合轮廓行为的结构行为和稳定性的影响表明,该理论具有利用不同的翘曲函数增强现有分析解决方案提供的可用解决方案的能力。

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