Forced vibration analysis of warping considered curved composite beams resting on viscoelastic foundation

Year 2018, Volume: 31 Issue: 4, 1093 - 1105, 01.12.2018

Umit Necmettin Arıbas , Merve Ermıs Akif Kutlu , Nihal Eratlı , Mehmet Hakkı Omurtag

Abstract

The forced vibration analysis of warping
considered curved composite Timoshenko beams resting on viscoelastic foundation
is investigated via the mixed finite element method. Rocking is considered both
for Winkler and Pasternak viscoelastic foundations. Two nodded curved element
has 12 degrees of freedom. Problems are solved in frequency domain via Laplace
transform and modified Durbin’s algorithm is used for back transformation to
time domain. Warping considered average torsional rigidities of the composite
cross-sections are calculated numerically by ANSYS and verified by the
literature. After the verification of the algorithms, as benchmark examples,
curved composite beams on rocking considered viscoelastic Pasternak foundation
are solved.

Keywords

Curved composite beam, Forced vibration, Finite element method, Torsional rigidity, Viscoelastic foundation

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