Numerical investigation of damping of torsional beam vibrations by viscous bimoments

David Hoffmeyer, Jan Høgsberg

Publikation: Kapitel i bog/rapport/konference-proceedingKonferencebidrag i proceedingsForskning

Abstrakt

Damping of torsional beam vibrations of slender beam-structures with thin-walled cross-sections is investigated. Analytical results from solving the differential equation governing torsion with viscous bimoments imposed at the boundary, are compared with a numerical approach with three-dimensional, isoparametric elements. The viscous bimoments act on the axial warping displacements associated with inhomogeneous torsion, and are in a numerical format realized by suitable configurations of concentrated, axial forces describing discrete dampers. It is illustrated by an example that significant damping ratios may be obtained for a beam with an open cross-section.

OriginalsprogEngelsk
Titel8th Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017
RedaktørerAlfredo Guemes
ForlagInternational Center for Numerical Methods in Engineering
Publikationsdato2017
Sider1030-1041
ISBN (Elektronisk)978-849469093-8
StatusUdgivet - 2017
Udgivet eksterntJa
Begivenhed8th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017 - Madrid, Spanien
Varighed: 5. jun. 20178. jun. 2017

Konference

Konference8th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017
Land/OmrådeSpanien
ByMadrid
Periode05/06/201708/06/2017
SponsorCarinthian Tech Research AG (CTR)

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