Abstract
The influences of various core configurations and other structural characteristics on vibrations of sandwich panels are discussed in the paper. The presented analysis contributes to efforts to resolve the contradiction between the requests for increased stiffness and reduced mass of mechanical structures. Additive manufacturing (AM) technologies enable manufacturing of complex lattice and cellular structures and design of optimal sandwich structures that satisfy both requests. Effects of each design parameters of a sandwich panel (core shape, wall thickness of plates and core, width of core) can be varied independently of the other parameters, thus contributing to change of modal behaviour of the panel. In this study a FEM calculations are used for determining of natural frequencies and mode shapes of sandwich structures designed for production by selective laser sintering technology. Analyses of the obtained results presents base for optimal design of light-weight structures in automotive, aerospace and naval industries.
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