## What is/are Double Damping?

Double Damping - We investigate the large-time behavior of solutions for a class of inhomogeneous semilinear wave equations involving double damping and potential terms.^{[1]}Heave and pitch responses of spar platform with single and double damping plates under regular waves are discussed in this paper.

^{[2]}In this paper, we consider wave equations with double damping terms expressed by $$u_{t}$$ut and $$-\Delta u_{t}$$-Δut and a power type of nonlinearity $$\vert u\vert ^{p}$$|u|p.

^{[3]}As a technological innovation of high-power hydraulic rock drill, double damping system has a very important effect on impact performance.

^{[4]}We consider the Cauchy problem in \begin{document}$ {\bf R}^{n} $\end{document} for some wave equations with double damping terms, that is, one is the frictional damping \begin{document}$ u_{t}(t, x) $\end{document} and the other is very strong structural damping expressed as \begin{document}$ (-\Delta)^{\theta}u_{t}(t, x) $\end{document} with \begin{document}$ \theta > 1 $\end{document}.

^{[5]}In this paper, we consider the Cauchy problem for the sixth-order multidimensional generalized Boussinesq equation with double damping terms.

^{[6]}In this article, we study semi-linear $\sigma$-evolution equations with double damping including frictional and visco-elastic damping for any $\sigma\ge 1$.

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## double damping term

In this paper, we consider wave equations with double damping terms expressed by $$u_{t}$$ut and $$-\Delta u_{t}$$-Δut and a power type of nonlinearity $$\vert u\vert ^{p}$$|u|p.^{[1]}We consider the Cauchy problem in \begin{document}$ {\bf R}^{n} $\end{document} for some wave equations with double damping terms, that is, one is the frictional damping \begin{document}$ u_{t}(t, x) $\end{document} and the other is very strong structural damping expressed as \begin{document}$ (-\Delta)^{\theta}u_{t}(t, x) $\end{document} with \begin{document}$ \theta > 1 $\end{document}.

^{[2]}In this paper, we consider the Cauchy problem for the sixth-order multidimensional generalized Boussinesq equation with double damping terms.

^{[3]}