The classical solution of the mixed problem for the one-dimensional wave equation with the nonsmooth second initial condition
https://doi.org/10.29235/1561-2430-2021-57-1-23-32
Abstract
In this article, we study the classical solution of the mixed problem in a quarter of a plane for a one-dimensional wave equation. On the bottom of the boundary, the Cauchy conditions are specified, and the second of them has a discontinuity of the first kind at a point. The smooth boundary condition is set at the side boundary. The solution is built using the method of characteristics in an explicit analytical form. The uniqueness is proved, and the conditions under which a piecewise-smooth solution exists are established. The problem with conjugate conditions is considered
About the Authors
V. I. KorzyukBelarus
Viktor I. Korzyuk – Academician of the National Aca demy of Sciences of Belarus, Dr. Sc. (Physics and Mathematics), Professor
11, Surganov Str., 220072, Minsk
4, Nezavisimosti Ave., 220030, Minsk
J. V. Rudzko
Belarus
Jan V. Rudzko – Master’s Degree Student, Belarusian State University
4, Nezavisimosti Ave., 220030, Minsk
References
1. Lazaryan V. A. On dynamic forces in harness devices of homogeneous trains with resistance to relative movements of carriages. Trudy Dnepropetrovskogo instituta inzhenerov zheleznodorozhnogo transporta [Proceedings of the Dnepropetrovsk Institute of Railway Engineers], 1950, no. 20, pp. 3–32 (in Russian).
2. Mavrin A. I. To the theory of shock piling. Izvestiya vuzov (stroitel’stvo i arkhitektura) = News of higher educational institutions (building and architecture), 1967, no. 8, pp. 24–28 (in Russian).
3. Boussinesq J. Du choc longitudinal d’une barre élastique prismatique fixée à un bout et heurtée à l’autre. Comptes Rendus, 1883, vol. 97, no. 2, pp. 154–157 (in French).
4. Gayduk S. I. On some problems related to the theory of transverse impact on rods. Differentsial’nye uravneniya = Differential Equations, 1977, vol. 13, no. 7, pp. 1233–1243 (in Russian).
5. Gayduk S. I., Zayats G. M. On the uniqueness of the solution of one problem from the wave theory of mechanical shock. Differentsial’nye uravneniya = Differential Equations, 1989, vol. 25, no. 5, pp. 833–839 (in Russian).
6. Korzyuk V. I. Equations of mathematical physics. Minsk, BSU, 2011. 459 p. (in Russian).
7. Korzyuk V. I., Puzyrnyi S. I. Classical solution of mixed problems for the one-dimensional wave equation with Cauchy nonsmooth conditions. Vestsі Natsyianal’nai akademіі navuk Belarusі. Seryia fіzіka-matematychnykh navuk = Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics series, 2016, no. 2, pp. 22–31 (in Russian).
8. Korzyuk V. I., Kozlovskaya I. S. On matching conditions in boundary value problems for hyperbolic equations. Doklady Natsional’noi akademii nauk Belarusi = Doklady of the National Academy of Sciences of Belarus, 2013, vol. 57, no. 5, pp. 37–42 (in Russian).
9. Korzyuk V. I., Kozlovskaya I. S., Naumovets S. N. Classical solution to the first mixed problem for the one-dimensional wave equation with the Cauchy-type conditions. Vestsі Natsyianal’nai akademіі navuk Belarusі. Seryia fіzіka-matematychnykh navuk = Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics series, 2015, no. 1, pp. 7–20 (in Russian).
10. Korzyuk V. I., Kozlovskaya I. S. Solution of the Cauchy problem for a hyperbolic equation with constant coefficients in the case of two independent variables. Differentsial’nye uravneniya = Differential Equations, 2012, vol. 48, no. 5, pp. 707– 716.https://doi.org/10.1134/s0012266112050096
11. Korzyuk V. I., Kozlovskaya I. S. Classical solutions of problems for hyperbolic equations. Part 2. Minsk, Belarusian State University Publ., 2017. 50 p. (in Russian).
12. Korzyuk V. I., Kozlovskaya I. S., Sokolovich V. Yu. Classical solution of the mixed problem in the quarter of the plane for the wave equation. Doklady Natsional’noi akademii nauk Belarusi = Doklady of the National Academy of Sciences of Belarus, 2018, vol. 62, no. 6, pp. 647–651 (in Russian). https://doi.org/10.29235/1561-8323-2018-62-6-647-651
13. Stolyarchuk I. I. Solution of the mixed problems by the method of characteristics for the wave equation with the integral condition. Vestsі Natsyianal’nai akademіі navuk Belarusі. Seryia fіzіka-matematychnykh navuk = Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics series, 2017, no. 1, pp. 53–62 (in Russian).
14. Korzyuk V. I., Stolyarchuk I. I. Classical solution of the mixed problem for the Klein – Gordon – Fock type equation in the half-strip with curve derivatives at boundary conditions. Vestsі Natsyianal’nai akademіі navuk Belarusі. Seryia fіzіkamatematychnykh navuk = Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics series, 2018, vol. 54, no. 4, pp. 391–403 (in Russian). https://doi.org/10.29235/1561-2430-2018-54-4-391-403
15. Korzyuk V. I., Nguyen Van Vinh. A mixed problem for the four-order one-dimensional hyperbolic equation with periodic conditions. Vestsі Natsyianal’nai akademіі navuk Belarusі. Seryia fіzіka-matematychnykh navuk = Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics series, 2018, vol. 54, no. 2, pp. 135–148 (in Russian). https://doi.org/10.29235/1561-2430-2018-54-2-135-148