Efficient Mode Superposition Methods for Non-classically Damped Syst

다국어 초록 (Multilingual Abstract)

An improved analytical solution was developed for the free torsional vibration of suspension bridges. The proposed methodconsiders the warping-torsional shear effect of a stiffening trus as well as gravitational stiffnes effects. The equivalentformulated based on the thin-waled beam theory, taking shear deformation into consideration. The suspension bridge elementis also developed as an extension of the suggested analytical formulation using Hermitian polynomials for finite elementprocedures. The validity and acuracy of the proposed methods are demonstrated through the numerical examples and, inadition, the effects of the warping-torsional shear deformation and gravitational stiffness on torsional vibration are addressed.yidentified for the torsional free vibration of a simply supported suspension bridge in analytical aproaches.

참고문헌 (Reference)

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2 "Free torsional vibrations of suspension bridges Journal of Structural Division ASCE" 767-78, 1979

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4 "Analytical and numerical study on free vertical vibration of shear- deformable suspension bridges" 238 : 65-84, 2000