Abstract
In a domain bounded with respect to the variable \( z \) and having a weakly horizontal inhomogeneity, we consider the problem of determining the convolution kernel \( k(t,x) \), \( t\in [0,T] \), \( x\in {\mathbb R} \), occurring in the viscoelasticity equation. It is assumed that this kernel weakly depends on the variable \( x \) and has a power series expansion in a small parameter \( \varepsilon \). A method is constructed for finding the first two coefficients \( k_{0}(t) \) and \( k_{1 }(t) \) of this expansion. Theorems on the global unique solvability of the problem are obtained.
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REFERENCES
A. Lorenzi, “An identification problem related to a nonlinear hyperbolic integro-differential equation,” Nonlinear Anal. Theory Meth. & Appl. 22 (1), 21–44 (1994).
J. Janno and L. von Wolfersdorf, “Inverse problems for identification of memory kernels in viscoelasticity,” Math. Meth. Appl. Sci. 20 (4), 291–314 (1997).
D. K. Durdiev and Zh. D. Totieva, “The problem of determining the one-dimensional kernels of the viscoelasticity equation,” Sib. Zh. Ind. Mat. 16 (2), 72–82 (2013).
D. K. Durdiev and Zh. Sh. Safarov, “Inverse problem of determining the one-dimensional kernel of the viscoelasticity equation in a bounded domain,” Math. Notes 97 (6), 867–877 (2015).
D. K. Durdiev and A. A. Rahmonov, “Inverse problem for a system of integro-differential equations for SH waves in a visco-elastic porous medium: global solvability,” Theor.Math. Phys. 195 (3), 923–937 (2018).
D. K. Durdiev and Z. D. Totieva, “The problem of determining the one-dimensional matrix kernel of the system of viscoelasticity equations,” Math. Meth. Appl. Sci. 41 (17), 8019–8032 (2018).
Z. D. Totieva and D. K. Durdiev, “The problem of finding the one-dimensional kernel of the thermoviscoelasticity equation,” Math. Notes. 103 (1–2), 118–132 (2018).
Z. S. Safarov and D. K. Durdiev, “Inverse problem for an integro-differential equation of acoustics,” Differ. Equations 54 (1), P. 134–142 (2018).
D. K. Durdiev and Z. D. Totieva, “The problem of determining the one-dimensional kernel of viscoelasticity equation with a source of explosive type,” J. Inverse Ill-Posed Probl. 28 (1), 43–52 (2020).
J. Sh. Safarov, “Global solvability of the one-dimensional inverse problem for the integro-differential equation of acoustics,” J. Sib. Fed. Univ. Math. Phys. 11 (6), 753–763 (2018). https://doi.org/10.17516/1997-1397-2018-11-6-753-763
J. Sh. Safarov, “Inverse problem for an integro-differential equation with distributed initial data,” Uzb. Math. J., No. 1, 117–124 (2019).
U. D. Durdiev, “An inverse problem for the system of viscoelasticity equations in homogeneous anisotropic media,” J. Appl. Ind. Math. 13 (4), 623–628 (2019).
V. G. Romanov, “Inverse problems for equation with a memory,” Eurasian J. Math. Comput. Appl. 2 (4), 51–80 (2014).
V. G. Romanov, “Problem of determining the permittivity in the stationary system of Maxwell equations,” Dokl. Math. 95 (3), 230–234 (2017).
V. G. Romanov, “Stability estimates for the solution to the problem of determining the kernel of a viscoelastic equation,” J. Appl. Ind. Math. 6 (3), 360–370 (2012).
V. G. Romanov, “On the determination of the coefficients in the viscoelasticity equations,” Sib. Math. J. 55 (3), 503–510 (2014).
V. G. Romanov, “Problem of kernel recovering for the viscoelasticity equation,” Dokl. Math. 86, 608–610 (2012).
D. K. Durdiev and Z. D. Totieva, “The problem of determining the multidimensional kernel of the viscoelasticity equation,” Vladikavkaz. Mat. Zh. 17 (4), 18–43 (2015).
D. K. Durdiev, “Some multidimensional inverse problems of memory determination in hyperbolic equations,” Zh. Mat. Fiz. Anal. Geom. 3 (4), 411–423 (2007).
D. K. Durdiev and A. A. Rakhmonov, “The problem of determining the 2D kernel in a system of integro-differential equations of a viscoelastic porous medium,” J. Appl. Ind. Math. 14 (2), 281–295 (2020).
D. K. Durdiev and A. A. Rahmonov, “A 2D kernel determination problem in a visco-elastic porous medium with a weakly horizontally inhomogeneity,” Math. Meth. Appl. Sci. 43 (15), 8776–8796 (2020).
M. K. Teshaev, I. I. Safarov, N. U. Kuldashov, M. R. Ishmamatov, and T. R. Ruziev, “On the distribution of free waves on the surface of a viscoelastic cylindrical cavity,” J. Vib. Eng. Technol. 8 (4), 579–585 (2020).
I. Safarov, M. Teshaev, E. Toshmatov, Z. Boltaev, and F. Homidov, “Torsional vibrations of a cylindrical shell in a linear viscoelastic medium,” IOP Conf. Ser.: Mater. Sci. Eng. 883 (1), 012190 (2020).
M. K. Teshaev, I. I. Safarov, and M. Mirsaidov, “Oscillations of multilayer viscoelastic composite toroidal pipes,” J. Serb. Soc. Comput. Mech. 13 (2), 104–115 (2019).
V. A. Dedok, A. L. Karchevsky, and V. G. Romanov, “A numerical method of determining permittivity from the modulus of the electric intensity vector of an electromagnetic field,” J. Appl. Ind. Math. 13 (3), 436–446 (2019).
A. L. Karchevsky, “A frequency-domain analytical solution of Maxwell’s equations for layered anisotropic media,” Russ. Geol. Geophys. 48 (80), 689–695 (2007).
V. G. Romanov and A. L. Karchevsky, “Determination of permittivity and conductivity of medium in a vicinity of a well having complex profile,” Eurasian J. Math. Comput. Appl. 6 (4), 62–72 (2018).
A. L. Karchevsky, “A numerical solution to a system of elasticity equations for layered anisotropic media,” Russ. Geol. Geophys. 46 (3), 339–351 (2005).
A. L. Karchevsky, “The direct dynamical problem of seismics for horizontally stratified media,” Sib. Electron. Mat. Izv., No. 2, 23–61 (2005).
A. L. Karchevsky, “Numerical solution to the one-dimensional inverse problem for an elastic system,” Dokl. Earth Sci. 375 (8), 1325–1328 (2000).
A. L. Karchevsky, “Simultaneous reconstruction of permittivity and conductivity,” Inverse Ill-Posed Probl. 17 (4), 387–404 (2009).
E. Kurpinar and A. L. Karchevsky, “Numerical solution of the inverse problem for the elasticity system for horizontally stratified media,” Inverse Probl. 20 (3), 953–976 (2004).
A. L. Karchevsky, “Numerical reconstruction of medium parameters of member of thin anisotropic layers,” Inverse III-Posed Probl. 12 (50), 519–534 (2004).
U. D. Durdiev, “Numerical method for determining the dependence of the dielectric permittivity on the frequency in the equation of electrodynamics with memory,” Sib. Electron. Mat. Izv. 17, 179–189 (2020). https://doi.org/10.33048/semi.2020.17.013
Z. R. Bozorov, “Numerical determining a memory function of a horizontally-stratified elastic medium with aftereffect,” Eurasian J. Math. Comput. Appl. 8 (2), 4–16 (2020).
A. S. Blagoveshchenskii and D. A. Fedorenko, “The inverse problem for an acoustic equation in a weakly horizontally inhomogeneous medium,” J. Math. Sci. 155 (3), 379–389 (2008).
V. G. Romanov, Inverse Problem of Mathematical Physics (Nauka, Moscow, 1984) [in Russian].
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Durdiev, D.K., Safarov, J.S. Problem of Determining the Two-Dimensional Kernel of the Viscoelasticity Equation with a Weakly Horizontal Inhomogeneity. J. Appl. Ind. Math. 16, 22–44 (2022). https://doi.org/10.1134/S1990478922010033
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DOI: https://doi.org/10.1134/S1990478922010033