Shock wave formation and cloaking in hyperelastic rodsстатья
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Дата последнего поиска статьи во внешних источниках: 26 января 2024 г.
Аннотация:The analysis of propagating initially harmonic acoustic pulse in a semi-infinite hyperelastic rod obeying the Yeoh strain energy potential reveals attenuation with distance of the wave amplitudes caused by the elastic energy dissipation due to forming and propagation of the shock wave fronts and heat production. The observed attenuation of harmonic waves, results in a broadband cloaking of fairly remote regions. The analysis is based on solving a nonlinear equation of motion by an explicit Lax – Wendroff time-difference scheme combined with the finite element discretization in spatial domain. The revealing phenomena are applicable to studies of acoustic wave propagation in various elastomeric rubberlike materials modeled by the Yeoh hyperelastic potentials.