title: Normal waves in elastic bars of rectangular cross section.
abstract: This paper addresses a theoretical study of guided normal waves in elastic isotropic bars of rectangular cross-section by an analytical superposition method. Dispersion properties of propagating and evanescent modes for four families are analyzed in detail at various geometric and physical parameters of the bar. A comparison of the obtained results with the well-known properties for waves in infinite plates and circular cylinders is provided. The complicated structure of dispersion spectra is explained. High-frequency limiting values for phase and group velocities of normal waves are established for the first time. Calculated data agree well with the available experimental results.
authors.affiliation: Department of Natural Resources, Institute of Telecommunication and Global Information Space, National Academy of Sciences of Ukraine, 03186 Kiev, Ukraine.
authors.forename: Anastasiia A
authors.initials: AA
authors.lastname: Krushynska
authors.forename: Viatcheslav V
authors.initials: VV
authors.lastname: Meleshko
mesh_terms: D000162:Acoustics / Q000295:instrumentation; D003198:Computer Simulation; D004548:Elasticity; D004867:Equipment Design; D005583:Fourier Analysis; D008962:Models, Theoretical; D009038:Motion; D009716:Numerical Analysis, Computer-Assisted; D013016:Sound; D013997:Time Factors