Abstract
This chapter is devoted to analysis of nonlinear elastic plane transverse harmonic waves. It starts with basic nonlinear wave equations for these waves, and subsequently, the statement is divided into two parts. In the first part the quadratically nonlinear waves are discussed. The second part includes an analysis of the following nonlinear approach—simultaneous allowance for quadratic and cubic nonlinearities. Part 1 is devoted to solving the second and third standard problems for which the method of successive approximations is used. The first two approximations are considered, and the corresponding wave effects are described and discussed. In Part 2, cubically nonlinear waves are considered. Here, the method of slowly varying amplitudes as applied to the study of the plane elastic harmonic transverse waves is applied, and the problem of self-switching of two transverse elastic harmonic plane waves is presented in sequence.
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References
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Exercises
Exercises
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1.
See in textbooks the definition of modulated wave. In which sense is wave (7.13) the modulated wave?
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2.
Sketch separately the plots of the three longitudinal waves from (7.19): first harmonic, second harmonic, and composite wave. Collect together all three waves in one plot and comment on the evolution of wave (7.19).
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3.
Sketch separately the plots of the two transverse waves from (7.20): first harmonic and composite wave. Collect together the two waves in one plot and comment on the evolution of wave (7.20).
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4.
Compare the shorten equation (7.27) for the cubically nonlinear approach and the similar equation (5.65) for the quadratically nonlinear approach. How are they different and similar?
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5.
Compare the evolution equation (7.30) for the cubically nonlinear approach and the similar equation (5.66) for the quadratically nonlinear approach. How are they different and similar?
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6.
Compare (7.31) (cubically nonlinear equations) and (5.70) (quadratically nonlinear equations) Analyze the procedure for obtaining from these different equations identical Manley–Rowe relations (but with a different S ….)
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Rushchitsky, J.J. (2014). Nonlinear Plane Transverse Waves in Elastic Materials (Murnaghan Model, Five-Constant Model). In: Nonlinear Elastic Waves in Materials. Foundations of Engineering Mechanics. Springer, Cham. https://doi.org/10.1007/978-3-319-00464-8_7
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DOI: https://doi.org/10.1007/978-3-319-00464-8_7
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