Using strong nonlinearity and high-frequency vibrations to control effective properties of discrete elastic waveguides
Jon Juel Thomsen, Sveinn Snaeland
The aim of this article is to investigate how high-frequency (HF) excitation combined with strong non-linear elastic material behaviour influences the effective
material or structural properties for low-frequency excitation and wave propagation. The HF effects are demonstrated on discrete linear spring-mass chains with
non-linear inclusions. The presented analytical, numerical and experimental results show clearly that the effective material properties can easily be altered
by establishing finite amplitude HF standing waves in the non-linear regions of the chain.