Three-Dimensional Finite-Element Models of Cylindrical Wood Fibers

J. D. Barrett, A. P. Schniewind

Abstract


A finite-element solution is presented for analysis of concentric, multilayered, orthotropic cylinders subjected to loadings that do not vary around the circumference. Model fibers are analyzed, and stress distributions are compared to those obtained, using a closed form solution technique. The influence of boundary-shear restraint on internal stress distribution is studied. Comparing results of the three-dimensional finite-element model to values of axial stiffness and relative twisting angles predicted using simpler, two-dimensional methods indicated that the two-dimensional models can give good estimates of these parameters, at least for the thin-walled models.

Keywords


Mathematical analysis;layered systems;finite element;cell mechanics

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