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Dirac delta function on the lhs of variational problem

+2 votes

Hi,
I am a newbie to Fenics; I am currently simulating the mechanical behavior of a plate using dolfin and I found extremely useful the PointSource class in order to implement nodal forces on the plate.
Unfortunately, I now have to introduce also nodal stiffness and mass; as I introduced the delta function in the rhs, I am looking for a way to emulate this behavior on the lhs side.

Is there a way to implement this using PointSource?

asked Mar 24, 2015 by Mattia Andolfatto FEniCS Novice (180 points)

What do you mean by nodal stiffness and mass?

commented May 4, 2015 by umberto FEniCS User (6,440 points)
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