Saint-Venant type estimate for the wave equation

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It is established Spatial decay estimates of Saint-Venant type for the damped wave equation of transient linear wave equation. It is shown that the end effects decay, at least for short times, very fast with the distance from the loaded end.

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[1] Knowles,J.K., On Saint-Venant's principle in the two dimensional linear theory of elasticity. Arc. Rat. Mech. Anal. ,21,1-22,1966

[2] Flavin,J.N., Knops,R.J., Some, spatial decay estimates in continuum dynamics, Journal of Elasticity, 17, 249-264, 1987

[3] Chirita,S., On the spatial decay estimates in certain time-dependent problems of continuum mechanics. Arch. Mech. ,47,4, 755-771. 1995

[4] Flavin,J.N., Rionero,S., Qualitative estimates for partial differential equations, An Introduction. J.Wiley Publ. 1996.

[5] Horgan,C.O., Recent developments concerning Saint-Venant principle: An update, Appl. Mech. Rev.,42,295-303,1989

[6] Horgan,C.O., Recent developments concerning Saint-Venant principle:An second update, Appl. Mech. Rev.,49,101-111,1996.

[7] KnowlesJ.K., On the spatial decay of solutions of the Heat Equation. ZAMP,2, 1050-1056, 1971