The Vibrations of Non-Symmetric Periodic Sandwich Beams
2020
scientific article
english
- sandwich beams
- vibrations
- tolerance averaging technique
- periodic microstructure
EN Sandwich structures are certain specific type of composites, which are widely used in modern engineering. In this paper the vibration analysis of a specific type of sandwich beam is performed. The considered structure is not only non-symmetric towards its midplane, but also made of periodically varying isotropic materials. As a result, the governing equations of such complicated structure is characterised by periodic, non-continuous and highly oscillating coefficients. With the use of the tolerance averaging technique those equations are transformed into the form with constant coefficients. Eventually, a comparative simulations of free vibration analysis of several sandwich beams were conducted to verify the effectiveness and superiority of proposed calculation method over the FEM.
2020218-1 - 2020218-8
CC BY (attribution alone)
public
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