dc.creator | Fernández Cara, Enrique | es |
dc.creator | Maestre Caballero, Faustino | es |
dc.date.accessioned | 2018-11-13T07:55:38Z | |
dc.date.available | 2018-11-13T07:55:38Z | |
dc.date.issued | 2018-02 | |
dc.identifier.citation | Fernández Cara, E. y Maestre Caballero, F. (2018). An inverse problem in elastography involving Lamé systems. Journal of Inverse and Ill-posed Problems, 26 (5), 589-605. | |
dc.identifier.issn | 0928-0219 | es |
dc.identifier.issn | 1569-3945 | es |
dc.identifier.uri | https://hdl.handle.net/11441/80064 | |
dc.description.abstract | This paper deals with some inverse problems for the linear elasticity system with origin in elastography: we try to identify the material coefficients from some extra information on (a part of) the boundary. In our main result, we assume that the total variation of the coefficient matrix is a priori bounded. We reformulate the problem as the minimization of a function in an appropriate constraint set. We prove that this extremal problem possesses at least one solution with the help of some regularity results. Two crucial ingredients
are a Meyers-like theorem that holds in the context of linear elasticity and a nonlinear interpolation result by Luc Tartar. We also perform some numerical experiments that provide satisfactory results. To this end, we apply the Augmented Lagrangian algorithm, completed with a limited-memory BFGS subalgorithm. Finally, on the basis of these experiments, we illustrate the influence of the starting guess and the errors in the data on the behavior of the iterates. | es |
dc.description.sponsorship | Ministerio de Ciencia, Innovación y Universidades | es |
dc.description.sponsorship | Ministerio de Economía y Competitividad | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | De Gruyter | es |
dc.relation.ispartof | Journal of Inverse and Ill-posed Problems, 26 (5), 589-605. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Inverse problems | es |
dc.subject | Linear elasticity | es |
dc.subject | Lamé systems | es |
dc.subject | Bounded variation coefficients | es |
dc.subject | Elastography | es |
dc.title | An inverse problem in elastography involving Lamé systems | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Ecuaciones Diferenciales y Análisis Numérico | es |
dc.relation.projectID | MTM2016-76990-P | es |
dc.relation.projectID | MTM2014-53309-P | es |
dc.relation.publisherversion | https://www.degruyter.com/downloadpdf/j/jiip.2018.26.issue-5/jiip-2017-0065/jiip-2017-0065.pdf | es |
dc.identifier.doi | 10.1515/jiip-2017-0065 | es |
dc.contributor.group | Universidad de Sevilla. FQM131: Ec.diferenciales,Simulación Num.y Desarrollo Software | es |
dc.contributor.group | Universidad de Sevilla. FQM309: Control y Homogeneización de Ecuaciones en Derivadas Parciales | es |
idus.format.extent | 17 p. | es |
dc.journaltitle | Journal of Inverse and Ill-posed Problems | es |
dc.publication.volumen | 26 | es |
dc.publication.issue | 5 | es |
dc.publication.initialPage | 589 | es |
dc.publication.endPage | 605 | es |
dc.contributor.funder | Ministerio de Ciencia, Innovación y Universidades (MICINN). España | |
dc.contributor.funder | Ministerio de Economía y Competitividad (MINECO). España | |