Caracterização de dominios de sistemas elasticos

AUTOR(ES)
DATA DE PUBLICAÇÃO

2002

RESUMO

The aim of this work is to study the influence of the damping in wave equation with viscous damping utt - ?.u + ?ut = 0, and the strongly damped wave equation utt - ?.u - ?? ut = 0 . We are interested in stunding problems where the damping vary in between these two cases. More specifically, we will consider utt - ?.u +? ( - ?) ? ut= 0, where the parameter a satisfies 0?a? 1. These problems generate analitic semigroups for 1/2 ?a? 1. We will restrict our work to this range of the parameter a

ASSUNTO(S)

semigrupos operadores lineares equações diferenciais

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