EVENTO
Mathematical modeling of large deformation in salt tectonics
Tipo de evento: Seminário LNCC
We consider instability of a two-layered solid body of a denser material on top of a lighter one. This problem is widely known to geoscientist in sediment-salt migration as salt diapirism. In the literature, this problem has often been treated as Rayleigh-Taylor instability in viscous fluids instead of solid bodies. To treat problems of large deformation, we propose a new algorithm for large deformation of solid bodies in general. It is a successive incremental linear approximation based on the well-known idea of small deformation superposed on large defornation at every numerical step. Numerical example for bending of a rectangular block into a circular section is presented for comparision with the exact solution. Modeling sediment-salt as elastic-viscoelastic solid body, the proposed method is used for numerical simulation of salt tectonics showing the formation of salt diapirs. Experimental varification of material models is also shown.
Data Início: 22/10/2012 Hora: 14:00 Data Fim: Hora: 15:30
Local: LNCC - Laboratório Nacional de Computação Ciêntifica - Auditorio A
Comitê Organizador: I Shih Liu - UFRJ - -
