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frictional contact tests, not working yet

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Jukka Aho
2016-02-09 13:43:27 +02:00
parent 9bdc8e6b1f
commit 5f2cb0b9f5
3 changed files with 168 additions and 59 deletions
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src/solver_utils.jl
+41
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@@ -48,6 +48,47 @@ end
function handle_overconstraint_error!(problem, nodes, all_dofs, C1_, C1, C2_, C2, D_, D, g_, g)
# old, new, old, new...
#= herzian contact with symmetry boundary
# INFO: SUMMARY for node id 555 with dofs 1109, 1110:
# INFO: ----- Current constraint -----
# INFO: lambda coefficients in C1 matrix are:
# INFO: dof 1109: ⋯ + 0.15*λ₁₁₀₉ ⋯
# INFO: rows in constraint matrix C2 & D
# INFO: dof 1109: 0.15*u₁₁₀₉ = -0.0 <-- overconstrained dof
# INFO: ----- New constraint -----
# INFO: lambda coefficients in C1 matrix are:
# INFO: dof 1109: ⋯ + 0.15*λ₁₁₀₉ ⋯
# INFO: dof 1110: ⋯ + 0.15*λ₁₁₁₀ ⋯
# INFO: rows in constraint matrix C2 & D
# INFO: dof 1109: 0.0*u₁₅₃ - 0.0*u₁₅₄ - 0.0*u₁₅₅ + 0.15*u₁₅₆ + 0.0*u₁₁₀₉ - 0.15*u₁₁₁₀ = -0.0 <-- overconstrained dof
# INFO: dof 1110: 0.15*λ₁₁₀₉ + 0.0*λ₁₁₁₀ = -0.0
# INFO: ----- Related equations -----
# INFO: dof 1110: 0.15*λ₁₁₀₉ + 0.0*λ₁₁₁₀ = -0.0
# INFO: dof 155: 0.165*u₁₅₅ = 0.0
# INFO: algorithm 1 solved issue? false
# INFO: algorithm 2 solved issue? true
# INFO: fixed: new setting is
# INFO: dof 1109: 0.0*u₁₅₃ - 0.0*u₁₅₄ - 0.0*u₁₅₅ + 0.15*u₁₅₆ + 0.0*u₁₁₀₉ - 0.15*u₁₁₁₀ = -0.0
if 555 in nodes
info("overconstraint DIRTY HACK")
# It is possible to selectively remove mortar constraints and the associated
# Lagrange multiplier components in certain axis directions and replace them
# with the Dirichlet (symmetry) conditions.
# old configuration is dirichlet symmetry condition
# new configuration is mortar constraint
# 1. remove mortar constrains and associated Lagrange multiplier components
# in dof 1109, that is, x direction of node 555.
C1[1109,:] = 0
C2[1109,:] = 0
D[1109,:] = 0
g[1109,:] = 0
# D[1110,1110] = 0
# g[1110] = 0
return
end
=#
""" Return all other dofs which connects to overconstrained dofs. """
function get_related_dofs(dofs)
dofs_ = Set(dofs)