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Numerical Analysis of the Evolution of Plane Longitudinal Nonlinear Elastic Waves with Different Initial Profiles

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Nonlinear plane longitudinal elastic waves with different profiles are studied using the Murnaghan model. The novelty is that the waves are analyzed using the same approximate method and the solutions of the nonlinear wave equations are similar in form. The distortion of the initial wave profile described by cosinusoidal, Gaussian, and Whittaker functions is described theoretically and numerically. About 80 variants of initial parameters are studied numerically: three analytical representations of the initial profile, three materials (aluminum, copper, steel), three wave lengths, three initial maximum amplitudes. For each variant, four (cosine) and five (Gauss, Whittaker) two-dimensional graphs of wave shape versus traveled distance are plotted to demonstrate the distortion of the wave profile

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Correspondence to J. J. Rushchitsky.

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Translated from Prikladnaya Mekhanika, Vol. 53, No. 1, pp. 121–130, January–February, 2017.

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Yurchuk, V.N., Rushchitsky, J.J. Numerical Analysis of the Evolution of Plane Longitudinal Nonlinear Elastic Waves with Different Initial Profiles. Int Appl Mech 53, 104–110 (2017). https://doi.org/10.1007/s10778-017-0794-6

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