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Hello, please I need to know how can I implement a finite difference scheme in a fenics program

–2 votes

If i have the second derevative per respect to time of u equal to
[u(n-1)-2u(n)+u(n+1)]/dt^2

how can I implement this in fenics if Ineed to solve the elastodynamic equation?

Thank you

asked May 31, 2017 by halarammouz FEniCS Novice (170 points)

1 Answer

0 votes

Hi, FEniCS is finite element, not finite difference solver.

But anyway, you can get some equivalent of finite differences using a proper discontinuous galerkin method. But it is not a question to be discussed here.

answered May 31, 2017 by mhabera FEniCS User (1,890 points)
Actually my problem is how can i discretize the seconde derivative of the displacement per respect time
asked May 31, 2017 by halarammouz FEniCS Novice (170 points)

How do you get an equivalent FD and FEM system using DG?

commented May 31, 2017 by nate FEniCS Expert (17,050 points)
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