The body force in a three-dimensional Lame' system: identification and regularization

Details The body force in a three-dimensional Lame' system: identification and regularization The body force in a three-dimensional Lame' system: identification and regularization

2011-03-08

arxiv.org/abs/1103.1536v3

Mathematics

Analysis of PDEs

The revised version to appear in the Journal: Inverse Problems in Science & Engineering

Scientific paper

Let a three-dimensional isotropic elastic body be described by the Lam\'e system with the body force of the form $F(x,t)=\phi(t)f(x)$, where $\phi$ is known. We consider the problem of determining the unknown spatial term $f(x)$ of the body force where the surface stress history is given as the overdetermination. This inverse problem is ill-posed. Using the interpolation method and truncated Fourier series, we construct a regularized solution from approximate data and provide explicit error estimates. AMS 2010 Subject Classification: 35L20, 35R30. Keywords: Body force, elastic, ill$-$posed problem, interpolation, Fourier series.

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