Abstract
This paper is devoted to a semigroup approach to an initial-boundary value problem of linear elastodynamics in the case where the boundary condition is a regularization of the genuine mixed displacement-traction boundary condition. More precisely, it is a smooth linear combination of displacement and traction boundary conditions, but is not equal to the pure traction boundary condition. Some previous results with mixed displacement-traction boundary condition are due to Inoue and Ito. The crucial point in our semigroup approach is to generalize the classical variational approach to the degenerate case, by using the theory of fractional powers of analytic semigroups.
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Dedicated to Professor Mitsuru Ikawa on the occasion of his 70th birthday.
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Taira, K. A mixed problem of linear elastodynamics. J. Evol. Equ. 13, 481–507 (2013). https://doi.org/10.1007/s00028-013-0187-1
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DOI: https://doi.org/10.1007/s00028-013-0187-1