Anomalous nonlinearity of microstructured solids: From diverse manifestations to common roots

Belyaeva, I.; Zaitsev, V.
July 2000
AIP Conference Proceedings;2000, Vol. 524 Issue 1, p271
Academic Journal
The report presents an instructive physical model applicable to a wide class of microinhomogeneous solids (e. g., rocks, grainy materials, concretes, damaged metals, etc.). It follows readily from the suggested model that the microinhomogeneities can insignificantly influence linear elasticity, whereas a sharp increase of the elastic nonlinearity and the occurrence of a frequency-independent Q-factor appear to be complementary manifestations of the same microstructure.


Related Articles

  • Pulsed Sounding of Cracks with the Use of the Modulation of Ultrasound by Vibrations. Kazakov, V. V.; Sutin, A. M. // Acoustical Physics;May2001, Vol. 47 Issue 3, p308 

    The possibility of using the effect of the modulation of ultrasound by vibrations due to the presence of cracks for the nonlinear acoustic detection of cracks is demonstrated. The method is based on a pulsed ultrasonic sounding with gating the received signal and simultaneously exciting...

  • Wave Processes in Media with Hysteretic Nonlinearity: Part 2. Nazarov, V. E.; Radostin, A. V.; Ostrovsky, L. A.; Soustova, I. A. // Acoustical Physics;Jul2003, Vol. 49 Issue 4, p444 

    Nonlinear processes caused by the propagation of low-frequency and high-frequency acoustic pulses in an unbounded medium and the propagation of continuous waves in a ring resonator are theoretically studied on the basis of two hysteretic equations of state for media with imperfect elasticity....

  • Physical Mechanisms of the Therapeutic Effect of Ultrasound (A Review). Bailey, M. R.; Khokhlova, V. A.; Sapozhnikov, O. A.; Kargl, S. G.; Crum, L. A. // Acoustical Physics;Jul2003, Vol. 49 Issue 4, p369 

    Therapeutic ultrasound is an emerging field with many medical applications. High intensity focused ultrasound (HIFU) provides the ability to localize the deposition of acoustic energy within the body, which can cause tissue necrosis and hemostasis. Similarly, shock waves from a lithotripter...

  • Parametric Reversal of Nonlinear Acoustic Waves. Brysev, A. P.; Mikhalevich, V. G.; Strel�tsov, V. N. // JETP Letters;6/10/2002, Vol. 75 Issue 11, p543 

    A mechanism of parametric reversal of the ultrasonic field from a quasi-monochromatic radiator situated in a nonlinear acoustic medium is proposed and analyzed. The mechanism is based on the phonon�plasmon interaction in semiconductors with a high concentration of electron traps, when a...

  • Nonexistence of Travelling Wave Solutions to Nonelliptic Nonlinear Schr�dinger Equations. Ghidaglia, J.M.; Saut, J.C. // Journal of Nonlinear Science;1996, Vol. 6 Issue 2, p139 

    By deriving Pohojaev-type identities we prove that nonelliptic nonlinear Schr�dinger equations do not admit localized travelling wave solutions. Similarly, we prove that the Davey-Stewartson hyperbolic-elliptic systems do not support travelling wave solutions except for a specific range of...

  • Effect of precipitate coherency strains on acoustic harmonic generation. Cantrell, John H.; Yost, William T. // Journal of Applied Physics;4/1/1997, Vol. 81 Issue 7, p2957 

    Investigates the effect of precipitate coherency strains on nonlinear acoustic harmonic generation. Acoustic nonlinearity with initial stress; Precipitate-matrix coherency strains; Variation of nonlinearity parameters from coherency strains; Application of model to aluminum alloy 2024 aging.

  • Electromagnetic Waves Generated by Opposite Acoustic Waves. Kolmakov, I. A. // Technical Physics Letters;Jan2001, Vol. 27 Issue 1, p67 

    An acoustic wave of a combined frequency (formed upon the superposition of the opposite acoustic waves of close frequencies) from a moving source generates electromagnetic waves of the same frequency with the amplitude increasing in the longitudinal direction. The problem is solved for the first...

  • Interaction of coherent collinear acoustic waves in a liquid/solid system. Duquesne, J.-Y.; Parshin, D.A. // Journal of Applied Physics;10/1/1997, Vol. 82 Issue 7, p3275 

    Presents a new type of experiment on the nonlinear interaction between collinear longitudinal acoustic waves. Propagation of two waves with different frequencies in a liquid and in a solid; Measurement of the magnitude of the signal resulting from the wave interaction; Sensitivity of the...

  • Acoustic Chaos. Lauterborn, Werner // Physics Today;Jan86, Vol. 39 Issue 1, pS-4 

    Focuses on the concept of acoustic chaos. Nonlinearity of acoustic chaos; Difficulty on the analysis of chaotic systems; Phenomenon of period doubling.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics