On solvability of boundary value problems for the wave equation with a nonlinear dissipation in noncylindrical domains

Solvability in noncylindrical domains is studied for some analogs of the first initial-boundary value problem for the wave equation with nonlinear increasing lower-order terms. Considered are the cases of domains that expand or contract with the growth of time. Alongside the existence theorems for regular solutions of boundary value problems some results are presented on the behavior of the energy norm of a solution as $t\to\infty$.