title: Natural damped vibrations of anisotropic composite box beams. 2. Numerical experiment
metadata.name: dc.contributor.author
metadata.value: Ryabov, Victor M.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Yartsev, Boris A.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2016-09-28T16:00:49Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2016-09-28T16:00:49Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2016-09
metadata.lang: -
metadata.name: dc.identifier.other
metadata.value: 10.21638/11701/spbu01.2016.311
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/3913
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: The results of numerical studies of the influence of reinforcing fibers orientation’s on values of natural
  frequencies and coefficients of mechanical losses associated vibrations unsupported symmetric and
  asymmetric box-shaped beams are discussed. The calculations were performed under the assumption
  of frequency the independence of the real parts of the complex moduli and coefficients of mechanical
  losses. The vibration modes identified by the form surfaces of the respective native forms. The boundaries
  of areas of mutual transformation of the interacting modes of vibrations were determined by joint
  analysis of dependencies and associated partial frequencies, and coefficients of mechanical losses from
  the orientation angle of reinforcing fibers. It is found that the vibrations of symmetrical box-shaped
  beam having two primary interactions: bending-torsion and longitudinal shear, combined into a single
  longitudinal-bending-torsion-shear interaction secondary interaction arising from the transverse shear
  deformations. For vibrations of asymmetric box-shaped beam arise longitudinal-torsional and flexuralflexural
  (in two mutually orthogonal planes) interaction. It is shown that in some cases the change of
  orientation angle of reinforcing fibers is accompanied by mutual the transformation of coupled mode
  oscillations. If the differential equation of natural vibrations contain derivatives of odd order eigenfunctions
  in the spatial variable (symmetric beam, flexural-flexural interaction in asymmetric beam), then changes
  in the orientation angle of reinforcing fibers leads to a mutual transformation of coupled vibration modes.
  If the equations contain only derivatives of even order (longitudinal-torsional interaction in asymmetric
  beam), the mutual transformation of the coupled vibration modes does not occur. Refs 4. Figs 7.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Series 1. Mathematics. Mechanics. Astronomy;Vol. 3 (61); Issue 3
metadata.lang: -
metadata.name: dc.subject
metadata.value: composite materials
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: natural vibrations
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: coupled vibrations
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Natural damped vibrations of anisotropic composite box beams. 2. Numerical experiment
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: Ryabov.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/3913/1/Ryabov.pdf
resources.format: Adobe PDF
resources.size: 1,09 MB