题目: Well-posedness of the free boundary problem in compressible elastodynamics
 

报告人：Yuri, Trakhinin, Sobolev Institute of Mathematics, Russia

摘要：We discuss recent results for the free boundary problem for the equations of compressible elastodynamics. We prove the local-in-time existence of a unique smooth solution of the free boundary problem provided that among three columns of the deformation gradient there are two which are non-collinear vectors at each point of the initial free boundary. If this non-collinearity condition fails, the local-in-time existence is proved under the classical Rayleigh-Taylor sign condition satisfied at the first moment. We show that the simultaneous failure of the non-collinearity condition and the Rayleigh-Taylor sign condition leads to Rayleigh-Taylor instability.

时间： 16:30-17:30, Oct. 9th

地点：Mengminwei Building 1105

邀请人：孙永忠  老师