Helical buckling of thin rods

FE modelling

Research output: Contribution to journalConference article

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Abstract

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 verification 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.

Original languageEnglish
Article number02010
Pages (from-to)1-6
Number of pages6
JournalMATEC Web of Conferences
Volume211
DOIs
Publication statusPublished - 10 Oct 2018
Event14th International Conference on Vibration Engineering and Technology of Machinery, VETOMAC 2018 - Lisbon, Portugal
Duration: 10 Sep 201813 Sep 2018

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Buckling
ABAQUS
Static analysis
Finite element method

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Engineering(all)

Cite this

Helical buckling of thin rods : FE modelling. / Kapitaniak, Marcin; Vaziri, Vahid; Wiercigroch, Marian.

In: MATEC Web of Conferences, Vol. 211, 02010, 10.10.2018, p. 1-6.

Research output: Contribution to journalConference article

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AB - 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 verification 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.

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