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possibility to manually remove dofs from problems by adding dof number to problem.assembly.removed_dofs vector

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Jukka Aho
2017-01-09 08:56:31 +02:00
parent 31d0771dd3
commit 9a382d9f7d
3 changed files with 19 additions and 3 deletions
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src/solvers.jl
+11
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@@ -136,16 +136,22 @@ function check_for_overconstrained_dofs(solver::Solver)
boundary_problems = get_boundary_problems(solver)
for problem in boundary_problems
new_constraints = Set(problem.assembly.C2.I)
new_constraints = setdiff(new_constraints, problem.assembly.removed_dofs)
overconstrained_dofs = intersect(constrained_dofs, new_constraints)
if length(overconstrained_dofs) != 0
warn("problem is overconstrained, finding overconstrained dofs... ")
overdetermined = true
for dof in overconstrained_dofs
for problem_ in boundary_problems
new_constraints_ = Set(problem_.assembly.C2.I)
new_constraints_ = setdiff(new_constraints_, problem_.assembly.removed_dofs)
if dof in new_constraints_
warn("overconstrained dof $dof defined in problem $(problem_.name)")
end
end
warn("To solve overconstrained situation, remove dofs from problems so that it exists only in one.")
warn("To do this, use push! to add dofs to remove to problem.assembly.removed_dofs, e.g.")
warn("`push!(bc.assembly.removed_dofs, $dof`)")
end
end
constrained_dofs = union(constrained_dofs, new_constraints)
@@ -183,6 +189,11 @@ function get_boundary_assembly(solver::Solver)
D_ = sparse(assembly.D, ndofs, ndofs)
f_ = sparse(assembly.f, ndofs, 1)
g_ = sparse(assembly.g, ndofs, 1)
for dof in assembly.removed_dofs
info("$(problem.name): removing dof $dof from assembly")
C1_[:,dof] = 0.0
C2_[dof,:] = 0.0
end
already_constrained = get_nonzero_rows(C2)
new_constraints = get_nonzero_rows(C2_)