The dynamic-selfsimilar lattice as the vibroisolation systems
Liudmila Ya. Banakh · Vibroengineering PROCEDIA · 2019
The vibroisolation properties of the lattices with dynamic-selfsimilar structures are investigated. The concept of dynamic-selfsimilarity (dynamic fractal) is introduced. It consists in the similarity of the elastic-inertial parameters of the forming cells (in contrast to the geometric scaling). It was shown that such structures are equivalent in frequency to the periodic structure with additional fixation, but the nature of the wave propagation in them is significantly different. The elastic waves propagation in dynamically self-similar lattices is investigated. It is shown that in such lattices there is a decrease in the level of a harmonic signal in the all frequency ranges, and in the non-pass band the signal attenuation is significantly higher than in the lattices with a periodic structure.