Dear Oladayo Eluyefa, 4th order elliptical problems require basically C^1 finite element methods such as Argyris, HCT or FVS elements. You can see an example of use in the matlab demo program interface/tests/matlab/demo_bilaplacian.m.
It is possible also in that context to use lower order finite element methods together with interior penalty methods (see for instance the work of Susanne C. Brenner and Li-Yeng Sung, C0 Interior Penalty Methods for Fourth Order Elliptic Boundary Value Problems on Polygonal Domains, Journal of Scientific Computing, 22-23 : 2005, pp83-118.) But there is not such an implementation in Getfem for the moment. Best regards, Yves ----- Original Message ----- From: "OLADAYO ELUYEFA (RIT Student)" <[email protected]> To: [email protected] Sent: Saturday, March 14, 2015 7:24:37 PM Subject: [Getfem-users] 4th order 2D problem I am having a hard time figuring out exactly what finite element methods (bases functions) fems, and integration technique would be appropriate for a 4th order 2D elliptical inverse problem. Oladayo Eluyefa, Rochester Institute of Technology '15, B.S., Computational Mathematics, M.S., Applied and Computational Mathematics. ( [email protected] , [email protected] ) (585)-287-1955 CONFIDENTIALITY NOTE : The information transmitted, including attachments, is intended only for the person(s) or entity to which it is addressed and may contain confidential and/or privileged material. Any review, re-transmission, dissemination or other use of, or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and destroy any copies of this information. Please consider the environment before printing this email. _______________________________________________ Getfem-users mailing list [email protected] https://mail.gna.org/listinfo/getfem-users _______________________________________________ Getfem-users mailing list [email protected] https://mail.gna.org/listinfo/getfem-users
