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postprocessing

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This commit is contained in:
Jukka Aho
2016-07-13 08:07:08 +03:00
parent 16c0a925ba
commit 7bbfa08f86
2 changed files with 43 additions and 27 deletions
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test/test_elasticity_2d_linear_with_surface_load.jl
+24 -23
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@@ -6,43 +6,42 @@ using JuliaFEM.Preprocess
using JuliaFEM.Postprocess
using JuliaFEM.Testing
function JuliaFEM.get_model(::Type{Val{Symbol("test 2d linear elasticity with surface + volume load")}})
#=
- solve 2d plane stress problem with known solution
- test postprocessing of nodal fields: (geometry, displacement
reaction force, concentrated force)
=#
@testset "test 2d linear elasticity with surface + volume load" begin
meshfile = "/geometry/2d_block/BLOCK_1elem.med"
mesh = aster_read_mesh(Pkg.dir("JuliaFEM")*meshfile)
# field problem
block = Problem(Elasticity, "BLOCK", 2)
block.properties.store_fields = ["stress", "strain"]
block.properties.formulation = :plane_stress
block.properties.finite_strain = false
block.properties.geometric_stiffness = false
block.elements = create_elements(mesh, "BLOCK")
update!(block.elements, "youngs modulus", 288.0)
update!(block.elements, "poissons ratio", 1/3)
update!(block.elements, "displacement load 2", 576.0)
traction = create_elements(mesh, "TOP")
# traction
traction = Problem(Elasticity, "BLOCK", 2)
traction.properties.formulation = :plane_stress
traction.properties.finite_strain = false
traction.properties.geometric_stiffness = false
traction.elements = create_elements(mesh, "TOP")
update!(traction, "displacement traction force 2", 288.0)
push!(block, traction...)
# boundary conditions
bc_sym = Problem(Dirichlet, "symmetry bc", 2, "displacement")
bc_elements_left = create_elements(mesh, "LEFT")
bc_elements_bottom = create_elements(mesh, "BOTTOM")
update!(bc_elements_left, "displacement 1", 0.0)
update!(bc_elements_bottom, "displacement 2", 0.0)
push!(bc_sym, bc_elements_left..., bc_elements_bottom...)
bc_sym_23 = Problem(Dirichlet, "symmetry bc 23", 2, "displacement")
bc_sym_23.elements = create_elements(mesh, "LEFT")
update!(bc_sym_23, "displacement 1", 0.0)
bc_sym_13 = Problem(Dirichlet, "symmetry bc 13", 2, "displacement")
bc_sym_13.elements = create_elements(mesh, "BOTTOM")
update!(bc_sym_13, "displacement 2", 0.0)
solver = LinearSolver("solve block problem")
push!(solver, block, bc_sym)
return solver
end
@testset "test 2d linear elasticity with surface + volume load" begin
solver = get_model("test 2d linear elasticity with surface + volume load")
block, bc_sym = solver.problems
solver = LinearSolver(block, traction, bc_sym_23, bc_sym_13)
solver()
f = 288.0
@@ -51,11 +50,13 @@ end
nu = 1/3
u3_expected = f/E*[-nu, 1] + g/(2*E)*[-nu, 1]
results = block(DataFrame, "displacement", :U, 0.0)
# fetch nodal results X + u and join them into one table using DataFrames
X = block(DataFrame, "geometry", :COOR, 0.0)
u = block(DataFrame, "displacement", :U, 0.0)
results = join(X, u, on=:id, kind=:outer)
println(results)
u3 = results[:N3, [:U1, :U2]]
info("(u1,u2) at node 3")
info(u3)
@test isapprox(u3, u3_expected)
#=