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dc.contributor.authorRoy, H-
dc.contributor.authorDutt, J K-
dc.contributor.authorDatta, P K-
dc.identifier.citationStructural Engineering and Mechanics ,Volume 33, Issue 4, November 2009, Pages 391-406en
dc.description.abstractViscoelastic materials store as well as dissipate energy to the thermal domain under deformation. Two efficient modelling techniques reported in literature use coupled (thermo-mechanical) ATF (Augmenting Thermodynamic Fields) displacements and ADF (Anelastic Displacement Fields)displacements, to represent the constitutive relationship in time domain by using certain viscoelastic parameters. Viscoelastic parameters are first extracted from the storage modulus and loss factor normally reported in hand books with the help of Genetic Algorithm and then constitutive relationships are used to obtain the equations of motion of the continuum after discretizing it with finite beam elements. The equations of motion are solved to get the frequency response function and modal damping ratio. The process may be applied to study the dynamic behaviour of composite beams and rotors comprising of several viscoelastic layers. Dynamic behaviour of a composite beam, formed by concentric layers of steel and aluminium is studied as an example.en
dc.format.extent578645 bytes-
dc.subjectviscoelastic beam;en
dc.subjectaugmenting thermodynamic field;en
dc.subjectanelastic displacement field;en
dc.subjectviscoelastic model parameters;en
dc.subjectmodal damping ratio;en
dc.subjectcomposite beam.en
dc.titleDynamics of Multilayered Viscoelastic Beamsen
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