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Eigenanalysis and continuum modelling of an asymmetric beam-like repetitive structure

Stephen, N.G. and Zhang, Y. (2004) Eigenanalysis and continuum modelling of an asymmetric beam-like repetitive structure International Journal of Mechanical Sciences, 46, (8), pp. 1213-1231. (doi:10.1016/j.ijmecsci.2004.07.012).

Record type: Article


An asymmetric repetitive pin-jointed structure, based upon a 3-D NASA framework, is analysed using a state variable transfer matrix technique. A conventional transfer matrix cannot be constructed due to the singularity of one partition of the stiffness matrix; instead, a cell (rather than cross-sectional) state vector consisting of displacements only is employed, leading to a generalised eigenvalue problem. The asymmetry of the structure leads to tension–torsion and bending–shear couplings, which may be explained in terms of the tension–shear coupling of a single face of the structure. Equivalent continuum beam properties and coupling coefficients are determined, and the effect of (a)symmetry discussed as a trade between, for example, tension-Poisson's ratio contraction for a symmetric structure, against tension–torsion coupling for the asymmetric.

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Published date: 2004
Keywords: repetitive, asymmetric, pin-jointed structure, transfer matrix, eigenanalysis, equivalent continuum properties, tension–torsion coupling


Local EPrints ID: 22913
ISSN: 0020-7403
PURE UUID: 8a23b530-a435-451d-88e4-1de8740572b4

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Date deposited: 23 Mar 2006
Last modified: 17 Jul 2017 16:20

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