Beam-element-based analysis of locally and/or distortionally buckled members: Application
Beam-element-based analysis of locally and/or distortionally buckled members: Application
复制标题
对局部和/或扭曲屈曲构件进行基于梁单元的分析：应用
DOI：
10.1016/j.tws.2015.06.021
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发表时间：
2015
影响因子：
6.4
通讯作者：
Hao Zhang
中科院分区：
文献类型：
--
作者：
Xi Zhang;K. Rasmussen;Hao Zhang
配套论文 [1] 提出了一种理论来解释七自由度梁有限元分析中局部和/或扭曲屈曲的影响。该理论将局部和/或扭曲屈曲的影响视为切线刚度的降低，并通过对短截面长度进行先验局部或后扭曲屈曲分析来确定降低的切线刚度。在本文中，所提出的方法被合并到开源软件包 OpenSees 中，该软件包之前经过修改以考虑扭曲效应 [2]。通过与梁、柱、框架的壳单元结果的比较，验证了该方法的准确性。
The companion paper [1] presents a theory to account for the effects of local and/or distortional buckling in a seven degrees of freedom beam finite element analysis. The theory considers the effect of local and/or distortional buckling as a reduction in tangent rigidities, and determines the reduced tangent rigidities by ana prioripost-local or post-distortional buckling analysis of a short length of section. In this paper, the presented method is incorporated into the open source software package OpenSees which was previously modified to account for warping effects [2]. The accuracy of the method is validated by comparison with shell element results for beams, columns and frames.