一类非线性粘弹性混合非齐次问题解的存在性和衰减性
Existence and Decay of Solutions of a Nonlinear Viscoelastic Problem with a Mixed Nonhomogeneous Condition
摘要:
研究了一类非线性波动方程u_{tt} + \int_{0}^{t} k(t-s)u_{xx}(s)ds+ u_{t} ^{q-2} u_{t} =f(x,t,u),0 < x < 1,0 < t < T,u_{x}(0,t)=u(0,t),u_{x}(1,t)+ηu(1,t)=g(t),u(x,0)= n_{0}(x),u_{t}(x,0)= n_{0}(x),0)={n}_{1}(x),其中n \geq 0,q \geq 2是给定的常数{n}_{0},{n}_{1},g,k,f是给定的函数。在第一部分中,在f的局部Lipschitz条件下,证明了一个整体存在唯一性定理。证明是基于与压缩映射定理和密度标准变元相关的论文[10]。在第二部分中,在更严格的条件下,证明了解u(t)及其导数u_{x}(t)在t趋于无穷大时指数衰减到0。
英文摘要:
We study the initial-boundary value problem for a nonlinear wave equation given by u_{tt}-u_{xx}+\int_{0}^{t}k(t-s)u_{xx}(s)ds+ u_{t}^{q-2}u_{t}=f(x,t,u) , 0 < x < 1, 0 < t < T, u_{x}(0,t)=u(0,t), u_{x}(1,t)+ηu(1,t)=g(t), u(x,0)=û_{0}(x), u_{t}(x,0)={û}_{1}(x), where η\geq 0, q\geq 2 are given constants {û}_{0}, {û}_{1}, g, k, f are given functions. In part I under a certain local Lipschitzian condition on f, a global existence and uniqueness theorem is proved. The proof is based on the paper [10] associated to a contraction mapping theorem and standard arguments of density. In Part} 2, under more restrictive conditions it is proved that the solution u(t) and its derivative u_{x}(t) decay exponentially to 0 as t tends to infinity.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。