日本機械学会論文集
Online ISSN : 2187-9761
ISSN-L : 2187-9761
材料力学,機械材料,材料加工
ラティスをコアとするサンドイッチ円筒の振動特性評価
高坂 恭平牛島 邦晴
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2020 年 86 巻 881 号 p. 19-00318

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In this study, the natural frequency of cylindrical sandwich tube with lattice core has been investigated using finite element method (FEM). In particular, effects of geometrical parameters such as the ratio of the diameter to length, unit-cell size and facesheet thickness on the natural frequency were discussed. It is revealed that the natural vibration frequency of the lattice sandwich tube can be predicted with a good accuracy in a wide range of tube length-to-diameter ratio L/D by substituting the equivalent material properties (initial stiffness Eeq and Poisson’s ratio νeq) and relative density ρeq into the analytical equations for a straight tube of a continuum medium.

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