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.
|Number of pages||6|
|Journal||MATEC Web of Conferences|
|Publication status||Published - 10 Oct 2018|
|Event||14th International Conference on Vibration Engineering and Technology of Machinery, VETOMAC 2018 - Lisbon, Portugal|
Duration: 10 Sept 2018 → 13 Sept 2018