- #1
Lojzek
- 249
- 1
I am trying to make a program that solves elasticity problems with finite element method and
I don't understand how to bring in boundary conditions.
Constant displacement boundary conditions seem simple: replace variables that represent the displacements at surface nodes with the prescribed constants and drop corresponding Euler-Lagrange equations for this variables.
But what if boundary conditions define pressures on the boundaries instead of displacements?
And how do we deal with the problem with both types of boundary conditions?
I don't understand how to bring in boundary conditions.
Constant displacement boundary conditions seem simple: replace variables that represent the displacements at surface nodes with the prescribed constants and drop corresponding Euler-Lagrange equations for this variables.
But what if boundary conditions define pressures on the boundaries instead of displacements?
And how do we deal with the problem with both types of boundary conditions?