Thermoelastodynamic disturbances in a half-space under the action of a buried thermal/mechanical line source

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dc.contributor.author Georgiadis, HG en
dc.contributor.author Rigatos, AP en
dc.contributor.author Brock, LM en
dc.date.accessioned 2014-03-01T01:15:20Z
dc.date.available 2014-03-01T01:15:20Z
dc.date.issued 1999 en
dc.identifier.issn 0020-7683 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/13438
dc.subject Boundary Element Method en
dc.subject Contour Integration en
dc.subject Exact Solution en
dc.subject Initial Boundary Value Problem en
dc.subject Laplace Transform en
dc.subject Linear Equations en
dc.subject Transient Dynamics en
dc.subject.classification Mechanics en
dc.subject.other Boundary element method en
dc.subject.other Boundary value problems en
dc.subject.other Dynamic response en
dc.subject.other Dynamics en
dc.subject.other Inverse problems en
dc.subject.other Laplace transforms en
dc.subject.other Mathematical models en
dc.subject.other Problem solving en
dc.subject.other Thermal load en
dc.subject.other Underground explosions en
dc.subject.other Biot thermoelasticity theory en
dc.subject.other Mechanical line source en
dc.subject.other Thermal line source en
dc.subject.other Thermoelastodynamic disturbances en
dc.subject.other Thermoelasticity en
dc.title Thermoelastodynamic disturbances in a half-space under the action of a buried thermal/mechanical line source en
heal.type journalArticle en
heal.identifier.primary 10.1016/S0020-7683(98)00168-1 en
heal.identifier.secondary http://dx.doi.org/10.1016/S0020-7683(98)00168-1 en
heal.language English en
heal.publicationDate 1999 en
heal.abstract The transient dynamic coupled-thermoelasticity problem of a half-space under the action of a buried thermal/mechanical source is analyzed here. This situation aims primarily at modeling underground explosions and impulsively applied heat loadings near a boundary. Also, the present basic analysis may yield the necessary field quantities required to apply the Boundary Element Method in more complicated thermoelastodynamic problems involving half-plane domains. A material response for the half-space predicted by Blot's thermoelasticity theory is assumed in an effort to give a formulation of the problem as general as possible (within the confines of a linear theory). The loading consists of a concentrated thermal source and a concentrated force (mechanical source) having arbitrary direction with respect to the halfplane surface. Both thermal and mechanical line sources are situated at the same location ina fixed distance from the surface. Plane-strain conditions are assumed tb prevail. Our problem can be viewed as a generalization of the classical Nakano-Lapwood-Garvin problem and its recent versions due to Payton (1968) and Tsai and Ma (1991). The initial/boundary; value problem is attacked with one- and two-sided Laplace transforms to suppress, respectively, the time variable and the horizontal space variable. A 9 x 9 system of linear equations arises in the double transformed domain and its exact solution is obtained by employing a program of symbolic manipulations. From this solution the two-si;led Laplace transform inversion is then obtained exactly through contour integration. The one-sided Laplace transform inversion for the vertical displacement at the surface is obtained here asymptotically for long times and numerically for short times, (C) 1999 Elsevier Science Ltd. All rights reserved. en
heal.journalName International Journal of Solids and Structures en
dc.identifier.doi 10.1016/S0020-7683(98)00168-1 en
dc.identifier.isi ISI:000079936500005 en
dc.identifier.volume 36 en
dc.identifier.issue 24 en
dc.identifier.spage 3639 en
dc.identifier.epage 3660 en

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