Axial vibrations of a composite anisogrid lattice cylindrical shell with end masses. (15th September 2017)

• Record Type: Journal Article
• Authors: Lopatin, A.V.; Morozov, E.V.; Shatov, A.V.
• Is Part Of: Composite structures. Volume 176(2017)
• Page Start: 1143
• Page End: 1151
• Publication Date: 2017-09-15
• Subjects: Space telescope body -- Composite anisogrid lattice cylindrical shell -- Rigid end masses -- Axisymmetric longitudinal vibration -- Modal analysis -- Finite-element analysis; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2017.06.001
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: An analytical solution of axial vibration problem formulated for a composite anisogrid lattice cylindrical shell with massive disks attached to its ends is presented in the paper. The lattice cylinder is analysed using a continuum model having effective stiffness parameters equivalent to the original anisogrid structure. Axisymmetric deformations of the vibrating shell are modelled using classic theory of orthotropic shells. A formula enabling rapid and reliable calculations of the frequency of axial vibrations is derived and verified using a finite element analysis. Based on this formula, effects of the geometry of lattice structure and masses of the disks are investigated.