Strong global attractors for non-damping weak dissipative abstract evolution equations
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- Τρυφωσα Δημητρακόπουλος
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1 17 3 Journal of East China Normal University Natural Science No. Mar. 17 : ,, 737 :,, V θ V θ L µr + ; V θ. : ; ; : O175.9 : A DOI: /j.issn Strong global attractors for non-amping weak issipative abstract evolution equations ZHANG Yu-bao, WANG Xuan College of Mathematics an Statistics, Northwest Normal University, Lanzhou 737, China Abstract: In this paper, by using the theory of semigroup, contractive function an the metho of efining functionals, the existence of the global attractors for nonamping weak issipative abstract evolution equations with strong solutions in the space V θ V θ L µr + ; V θ was obtaine when the nonlinear term satisfies the weaker issipative conition. Key wors: abstract evolution equation; contractive function; global attractor R 3, αu t t u tt t + ka θ ut + k sa θ ut ss + gut = f, x, t R +, ux, t =, x, t R,.1 ux, t = u x, t, x, t, : : ; 145RJZA11 :,,,. blcx7@gmail.com. :,,,,. wangxuan@nwnu.eu.cn.
2 , : 9. θ >, k, k > s R +, k s. ux, t,,, u = ux,, x..1 [1-], [3].,.,,.,,,., V θ V θ L µr + ; V θ. u tt t + αu t t + ka θ ut + k sa θ ut ss + gut = f, x, t R +,.. A =, θ = 1,, [4-5],. [6]., k s, [7], g., gu = sin u, Sine-Goron [8]. A =, θ =, [9], u.,. [1], María Anguiano. [11],. [1],,..1, [13],, : C >, g C 1 R lim inf y y gss ygy C y y, liminf gss y y. [13],, g 1.5,.,,.,, u t + σu ;,,, Soblev, C.1..1 [14] Banach X {St} t C, ε > B X, tb > X 1, {PStx x B, t tb}, I PStx < ε, t tb, x B,
3 1 17 P : X X 1.,, V θ V θ L µr + ; V θ.3. : 1,, ;, V θ V θ L µr + ; V θ,,. 1 H = L, Au, v = bu, v, u, v H, bu, v H,. A H, DA H. {λ j } j N, {ω j } j N A, {ω j } j N H, Aω j = λ j ω j, < λ 1 λ λ j, λ j j., A A θ, DA θ H. DA = H, DA θ = { V θ, DA θ = Vθ, } DAθ = V θ. V θ = u H : λ θ j u, ω j <. : u, v θ = j=1 λ θ ju, ω j v, ω j, u θ = u, u θ, u, v V θ. j=1 Hilbert, A r DA s DA s r, s, r R. A, A θ. θ 1 θ, DA θ1 DA θ, V θ H H. :V θ V θ H, V θ V θ H = H Vθ,, H, Vθ H, V θ., H, V θ V θ : u, v = u vx, u = u x, u, v H; u, v θ = u, v θ = A θ u A θ vx, u θ = A θ u A θ vx, u θ = A θ u x, u, v V θ ; A θ u x, u, v V θ. L µr + ; V θ R + V θ Hilbert, : ϕ, ψ µ,θ = µs A θ ϕa θ ψxs, ϕ µ,θ = Hilbert H = V θ V θ L µr + ; V θ, : µs A θ ϕ xs. z H = u, u t, η t H = 1 u θ + u t θ + η t µ,θ.
4 , : 11 Poincaré, λ > λ v λ v θ v θ, v V θ. 1.1 η t s = η t x, s = ux, t ux, t s, s R +. µs = k s k = 1,.1 : u tt t + A θ ut + µsa θ η t ss + gut = f, ηts t = ηss t + u t t. - : ux, t =, η t x, s =, x, t, ux, = u x, u t x, = u t x, x, η x, s = u x ux, s, x, s R µs : h 1 µs C 1 R + L 1 R +, µs µ s, s R + ; h µss = k > ; h 3 δ >, µ s + δµs, s R + ; h 4 s >, M >, µ s L, s µ s + Mµs, s s. g :g C R, R, : g y C1 + y, y R, 1.4 gy lim inf > λ. 1.5 y + y, l >, g : 1.1 [15] g y < l. 1.6 I = [, T ], µ h 1 h 3, T >, η t s CI; L µ R+ ; V θ, δ >, η t s, ηss t µ,θ δ ηt s µ,θ. 1.1 [7,16] X Banach, B X. X X φ, B B, {x n } n=1 B,, {x n}, lim n CB B B. lim φx n, x m =, m
5 [7-8,16-17] {St} t Banach X,, B, ε >, T = TB, ε φ T, CB, STx STy ε + φ T x, y, x, y B. {St} t X, {y n } n=1 X {t n }, n, {St n y n } n=1 X. 1. [14] X Banach {St} t X. {St} t X, {St} t : 1S = I ; StSs = St + s, t, s ; 3 t n t, x n x, St n x n Stx. 1.3 [14] X, Y Banach, X, Y, X Y Y X, i : X Y i : Y X. {St} t X Y,, Y. X B, {St} t SB, SB = {x B Stx B, t }. 1.4 [8,14] X Banach, {St} t X. {St} t 1 {St} t B X; {St} t..1, I = [, T ], T >, f V θ. z H, zt = ut, u t t, η t s I, zt 1., ut L I; V θ, u t t L I; V θ L I; V θ, η t s L I; L µr + ; V θ, ηts t + ηss t L I; L µr + ; V θ L I; L µr + ; V θ.,, Galerkin, ,..1, h 1 h , g CV θ ; V θ, f V θ, T > z H, zt = ut, u t t, η t s, zt L [, T ]; H..1, H St : z zt, t R +, {St} t, {St} t H.., N 1 >
6 , : 13, ν 1 >, Et = 1 ut θ + u tt θ + ηt s µ,θ, Ft = u t t µsa θ η t ssx, Gut = ut gssx, J t = N 1 Et + N 1 A θ Gut + Ft + ν 1 A θ utu t tx + C, C >, J t., N 1, ν 1 C 1 >, C >, 1 C 1 Et J t C 1 Et + C..1.1 zt = ut, u t t, η t s f V θ, g CV θ ; V θ , h 1 h 4, Q >, B H, t = t B H, zt H = 1 ut θ + u tt θ + ηt s µ,θ Q, t t. A θ u t t 1. H, 1.1, t Et + Aθ Gut + δ ηt s µ,θ f θ u t t θ k 4N 1 u t t θ + N 1 k f θ.. Ft t Ft = u tt t µsa θ η t ssx u t t µsa θ ηt t ssx..3.3, 1. u tt t µsa θ η t ssx = A θ ut µsa θ η t ssx x + µsa θ η ss t + gut µsa θ η t ssx f µsa θ η t ssx >, Young A θ ut µsa θ η t x ssx + µsa θ η ss t 1 ut θ + k η t s µ,θ..5 1
7 , 1.1 gut µsa θ η t ssx k 1 l ut + g µs A θ η t s s 1 1 ut θ + + k l λ η t s µ,θ + k 1 g..6.4, 1.1, Cauchy Young f µsa θ η t ssx k 1 f η t s µ,θ 1 ηt s µ,θ + k f θ λ..7.3, h h u t t µsa θ ηt t ssx = u t t µsa θ u t t η t sssx = k u t t s θ u t t µ sa θ η t ss + µ sa θ η t ss x s k u t t s θ + µ s u t t µ 1 s µ 1 s A θ η t s s + M µs A θ η t s s x s k u t t µ s 1 θ + µs s + Mk 1 u t t k u tt θ + 1 λ k s µs A θ η t s s µ s µs s 1 + Mk 1 η t s µ,θ..8 t Ft 1 ut θ k u tt θ + C 4 η t s µ,θ + k λ f θ + k g,.9 C 4 = k k + k l 1 λ + 1 s µ s 1 1 λ k µs s. + Mk 1 [15], gut, A θ ut λ γ ut θ 1 γ ut θ λ,.1 γ >., 1..1 A θ utu t tx u t t θ t γ ut θ λ + λ k γ ηt s µ,θ + 1 γ f θ J t N 1δ t + C 4 + ν 1λ k γ + k 4 + ν 1 η t s µ,θ + 1 γν 1 ut θ λ u t t θ + N 1 k f θ + k λ f θ + k g + ν 1 γ f θ. x 1 x
8 , : 15 1 = γν 1 4λ, N 1, ν 1, { N1 δ ε 1 = min.1 C 4 ν 1λ k γ Gronwall. N 1 δ C 4 ν 1λ k γ J t t >, k 4 ν 1 >., k 4 ν 1, γν } 1 N, C 5 = 1 + k + ν 1 f θ + k 4λ k λ γ g, J t t + ε 1 Et C 5. + ε 1 C 1 J t C 5 + ε 1C C 1. J t J e ε 1 C 1 t + C 1C 5 ε 1 + C..1,. f V θ, g CV θ ; V θ , h 1 h 4, {St} t B. B H, t = t B H, StB B..3, {St} t.. f V θ, g CV θ ; V θ , h 1 h 4, {St} t H. z n t = u n t, u nt t, ηn t s z mt = u m t, u mt t, ηm t s , z n = u n, u nt, η n z m = u m, u mt, η m. ωt = u nt u m t, ω t t = u nt t u mt t, ξ t s = ηn t s ηt m s, 1. ω tt t + A θ ωt + µsa θ ξ t ss + gu n t gu m t =,.1 ξt ts = ω tt ξs ts. N >, ν >, E ω t = 1 ωt θ + ω t t θ + ξ t s µ,θ, G ω t = t F ω t = A θ ω s gu n s gu m ssx, ω t t µsa θ ξ t ssx, J ω t = N E ω t + N G ω t + F ω t + ν A θ ωtω t tx + C ω,
9 16 17 C ω >, J ω t. N ν C 6, C 7, 1 C 6 E ω t J ω t C 6 E ω t + C 7. A θ ω t t.1 H, 1.1, F ω t, t F ωt = ω tt t t E ωt + G ω t + δ ξt s µ,θ ,.1 ω tt t µsa θ ξ t ssx = µsa θ ξ t ssx ω t t + A θ ωt µsa θ ξ t ssx µsa θ ξ ss t x + gu n t gu m t µsa θ ξt t ssx..14 µsa θ ξ t ssx , >, Cauchy Young, A θ ωt ωt θ + k µsa θ ξ t ssx + µsa θ ξ ss t x ξ t s µ,θ , C 8 = C gu n t gu m t C 1 + u n t + u m t ωt µsa θ ξ t ssx µsa θ ξ t ssx C 8 ωt θ + k 4λ ξ t s µ,θ, Q λ.
10 , : 17.14, h h 4 1.1, ω t t µsa θ ξtssx t = ω t t = k ω t t θ k ω t t θ + k ω t t θ + µsa θ ω t t ξ t s ssx s ω t t µ sa θ ξ t ss + s ω t t s µ sa θ ξ t ss x s µ s µ 1 s µ 1 s A θ ξ t s s + M µ s 1 µs s 1 + Mk k ω tt θ + 1 s µ s 1 λ k µs s Mk 1 ω t t µs A θ ξ t s s x 1 µs A θ ξ t s s x ξ t s µ,θ..18 t F ωt ωt θ k ω tt θ + C 9 ξ t s µ,θ + C 8 ωt θ,.19 C 9 = k + k + k + 1 s µ s 1 4λ λ k µs s. + Mk 1,.1 1.1, A θ ωtω t tx ω t t θ 1 t ωt θ + k ξt s µ,θ + C 8 ωt θ , J ω t t N δ + C 9 ν k C 8 + ν C 8 ωt θ, J ω t t N δ + C 9 ν k ν k 8λ N + ν 4N F ω t + ν 4 G ωt + ν 4N C 1 = C 8 + 9ν C ν3 8N. ξ t s µ,θ + ν ξ t s µ,θ + ν = ν, N > 1, ν < 1, N δ C 9 ν k ν k 8λ N ωt θ + k ν ω t t θ ωt θ + k 3ν ω t t θ A θ ωtω t tx + ν 4 C ω C 1 ωt θ + ν 4 C ω,.1 ν 4, k 3ν ν 4.
11 18 17 ε = ν 4N,.1 t J ωt + ε J ω t C 1 ωt θ + ν 4 C ω, e εt, t [, T ], ǫ [, T ], t > ǫ, C 11 = C 11 ǫ C 1, J ω T J ω e εt + C 11 T ǫ J ω e εt + C 11 T ωt θ t + C 1 ǫ ωt θt + ν ǫ 4 C ωe εǫ T. ωt θ t + ν ǫ 4 C ωe εǫ T φ T z n, z m = φ T z n t, z m t = C 11 T. ωt θ t + ν ǫ 4 C ωe εǫ T, φ T, z n t = u n t, u nt t, ηn t s z n = u n, u nt, η n B, V θ V θ, u n C[, T ]; V θ, lim ν ε, lim T n m..3, u n s u m s θs =,. ν ǫ lim ǫ 4 C ωe εǫ T =..3 lim n lim φ Tz n, z m =. m 1., {St} t.. 1.4,..3 f V θ, g CV θ ; V θ , h 1 h {St} t H B,, {St} t H A, H - H. [ ] [ 1 ] COLEMAN B D, NOLL W. Founations of linear viscoelasticity [J]. Reviews of Moern Physics, 1961, 33: [ ] DAFERMOS C M. Asymptotic stability in viscoelasticity [J]. Archive for Rational Mechanics an Analysis, 197, 374: [ 3 ] FABRIZIO M, MORRO A. Mathematical Problems in Linear Viscoelasticity [M]. Pennsylvania: Society for Inustrial an Applie Mathematics, 199. [ 4 ] GIORGI C, RIVERA J M, PATA V. Global attractors for a semilinear hyperbolic equations in viscoelasticity [J]. J Math Anal Appl, 1, 61: [ 5 ] PATA V, ZUCCHI A. Attractors for a ampe hyperbolic equation with linear memory [J]. Av Math Sci Appl, 1, 11:
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