文章基本信息

标题：Helical buckling of thin rods: FE modelling
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作者：Marcin Kapitaniak ; Vahid Vaziri ; Marian Wiercigroch 等
期刊名称：MATEC Web of Conferences
电子版ISSN：2261-236X
出版年度：2018
卷号：211
DOI：10.1051/matecconf/201821102010
语种：English
出版社：EDP Sciences
摘要：In this paper, we utilize the Finite Element (FE) method to model twisting of long thin rods and capture the bifurcation scenarios leading to heli- cal buckling and various further post-buckling states. Since standard nonlinear beam elements do not account for nonlinearity in torsional mode, we derive a modiﬁed beam element, which allows to model complex torsional buckling bifurcation scenarios of a thin rod subjected to twisting load. A series of veri- ﬁcation tests (static analysis with load stepping) of the developed code are per- formed to determine critical torsional buckling loads for various helical buck- ling modes and compared with ABAQUS FE simulation.