Von Karman evolution equations: Well-posedness and long time by Igor Chueshov

By Igor Chueshov

The major aim of this ebook is to debate and current effects on well-posedness, regularity and long-time habit of non-linear dynamic plate (shell) versions defined via von Karman evolutions. whereas some of the effects offered listed here are the outgrowth of very contemporary experiences by means of the authors, together with a few new unique effects the following in print for the 1st time authors have supplied a entire and fairly self-contained exposition of the final subject defined above. This contains providing all of the practical analytic framework in addition to the functionality house concept as pertinent within the examine of nonlinear plate types and extra mostly moment order in time summary evolution equations. whereas von Karman evolutions are the article lower than concerns, the tools constructed transcendent this particular version and will be utilized to many different equations, platforms which express related hyperbolic or ultra-hyperbolic habit (e.g. Berger's plate equations, Mindlin-Timoschenko structures, Kirchhoff-Boussinesq equations etc). so one can in achieving an affordable point of generality, the theoretical instruments offered within the e-book are really summary and tuned to basic sessions of second-order (in time) evolution equations, that are outlined on summary Banach areas. The mathematical equipment had to determine well-posedness of those dynamical structures, their regularity and long-time habit is constructed on the summary point, the place the wanted hypotheses are axiomatized. This technique permits to examine von Karman evolutions as only one of the examples of a wider type of evolutions. The generality of the procedure and strategies built are appropriate (as proven within the ebook) to many different dynamics sharing yes particularly common homes. broad history fabric supplied within the monograph and self-contained presentation make this publication appropriate as a graduate textbook.

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Extra resources for Von Karman evolution equations: Well-posedness and long time dynamics

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Then a = limk→∞ (vnk , Avnk )V,V for some sequence {nk }. 7) we have 0 ≤ (vnk , Avnk )V,V + (vnl , Avnl )V,V − (vnk , Avnl )V,V − (vnl , Avnk )V,V ≤ ε ˜ Thus, if we let l → ∞ in the last relation, we obtain that for all k, l ≥ N. 0 ≤ (vnk , Avnk )V,V + a − (v, Avnk )V,V − (vnk , f )V,V ≤ ε ˜ Therefore after limit transition k → ∞ we obtain that for all k ≥ N. 0 ≤ 2a − 2(v, f )V,V ≤ ε for any ε > 0. 6) holds. 5) we find that (v − w, f − Aw)V,V ≥ 0 for any w ∈ D(A) and hence, by maximality of A, v ∈ D(A) and f = Av.

The following notations are used. u s≡ u H s (Ω ) , u ≡ u L2 (Ω ) , and (u, v) ≡ (u, v)L2 (Ω ) . We begin by collecting several estimates for products of functions from Sobolev spaces. There are many known “product” estimates that determine Sobolev-type regularity of the product of two (or more) functions. 4 Properties of the von Karman bracket 39 to [229, 250, 266] and others. However, in the context of von Karman brackets more specific product estimates are needed (which not always can be derived from more general rules).

Therefore using H¨older’s inequality we have f ·g −1+s ≤ C f ·g L2/(2−s) ≤ C f L2p/(2−s) · g L2q/(2−s) , where p−1 + q−1 = 1. 6). 6) follow from the same inequalities established for Ω = R2 and for f and g lying in C0∞ (R2 ). 4) for Ω = R2 . 7) −1 where p−1 j + q j = 1 (p j = ∞ is allowed) and h s,p = h Lp + R2 dy | y |2+2s R2 | h(x + y) − h(x) | p dx 2/p 1/2 is the norm in the Besov space Bsp,2 (R2 ) (cf. 7)). 10) we have g s,2q1 ≤ C g 1+s−1/q1 , f s,2q2 ≤ C f 1+s−1/q2 , q j ≥ 1. 8) Let p2 = σ −1 and q1 = (s + σ )−1 .

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