mirror of
https://github.com/JuliaFEM/JuliaFEM.jl.git
synced 2026-08-06 04:21:33 +00:00
Tony Kelman
179 lines
6.4 KiB
Julia
179 lines
6.4 KiB
Julia
# This file is a part of JuliaFEM.
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# License is MIT: see https://github.com/JuliaFEM/JuliaFEM.jl/blob/master/LICENSE.md
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using JuliaFEM
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using JuliaFEM.Preprocess
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using JuliaFEM.Postprocess
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using JuliaFEM.Testing
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function get_model(::Type{Val{Symbol("mesh tie with curved 2d block")}};
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dy=0.0, adjust=false, tolerance=0.0, rotate_normals=false, swap=false,
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dual_basis=false, use_forwarddiff=true, finite_strain=false,
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geometric_stiffness=false)
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meshfile = @__DIR__() * "/testdata/block_2d_curved.med"
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mesh = aster_read_mesh(meshfile)
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upper = Problem(Elasticity, "upper", 2)
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upper.properties.formulation = :plane_stress
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upper.properties.finite_strain = finite_strain
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upper.properties.geometric_stiffness = geometric_stiffness
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upper.elements = create_elements(mesh, "UPPER")
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update!(upper.elements, "youngs modulus", 96.0)
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update!(upper.elements, "poissons ratio", 1/3)
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lower = Problem(Elasticity, "lower", 2)
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lower.properties.formulation = :plane_stress
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lower.properties.finite_strain = finite_strain
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lower.properties.geometric_stiffness = geometric_stiffness
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lower.elements = create_elements(mesh, "LOWER")
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update!(lower.elements, "youngs modulus", 96.0)
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update!(lower.elements, "poissons ratio", 1/3)
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bc_upper = Problem(Dirichlet, "upper boundary", 2, "displacement")
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bc_upper.elements = create_elements(mesh, "UPPER_TOP")
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update!(bc_upper.elements, "displacement 1", 0.0)
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update!(bc_upper.elements, "displacement 2", dy)
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bc_lower = Problem(Dirichlet, "lower boundary", 2, "displacement")
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bc_lower.elements = create_elements(mesh, "LOWER_BOTTOM")
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update!(bc_lower.elements, "displacement 1", 0.0)
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update!(bc_lower.elements, "displacement 2", 0.0)
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interface = Problem(Mortar, "interface between upper and lower block", 2, "displacement")
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interface_slave_elements = create_elements(mesh, "LOWER_TOP")
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interface_master_elements = create_elements(mesh, "UPPER_BOTTOM")
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if swap
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interface_slave_elements, interface_master_elements = interface_master_elements, interface_slave_elements
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end
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update!(interface_slave_elements, "master elements", interface_master_elements)
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interface.elements = [interface_master_elements; interface_slave_elements]
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interface.properties.adjust = adjust
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interface.properties.distval = tolerance
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interface.properties.rotate_normals = rotate_normals
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interface.properties.dual_basis = dual_basis
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interface.properties.use_forwarddiff = use_forwarddiff
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interface.assembly.u = zeros(2*length(mesh.nodes))
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interface.assembly.la = zeros(2*length(mesh.nodes))
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solver = Solver(Linear)
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push!(solver, upper, lower, bc_upper, bc_lower, interface)
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return solver
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end
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#=
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@testset "curved surface with adjust=true, standard lagrange, slave=lower surface, dy=0.0" begin
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# TODO: analytical solution now known, verify using other fem software
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solver = get_model("mesh tie with curved 2d block";
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adjust=false, tolerance=10, dy=-0.1, rotate_normals=true,
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dual_basis=true, use_forwarddiff=true, finite_strain=false,
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geometric_stiffness=false)
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solver()
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interface = solver["interface between upper and lower block"]
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@test isapprox(norm(interface.assembly.u), 0.11339715157447851)
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end
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@testset "curved surface with adjust=true, dual lagrange, slave=lower surface, dy=0.0" begin
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# TODO: analytical solution now known, verify using other fem software
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solver = get_model("mesh tie with curved 2d block";
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adjust=true, tolerance=10, dy=0.0, rotate_normals=true,
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dual_basis=true, use_forwarddiff=true)
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solver()
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interface = solver["interface between upper and lower block"]
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@test solver.properties.iteration == 2
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# differs -- why?
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@test isapprox(norm(interface.assembly.u), 0.11660422877751599)
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end
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@testset "curved surface with adjust=true, standard lagrange, slave=lower surface, dy=-0.1" begin
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# TODO: analytical solution now known, verify using other fem software
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solver = get_model("mesh tie with curved 2d block";
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adjust=true, tolerance=10, dy=-0.1, rotate_normals=true,
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dual_basis=false, use_forwarddiff=true)
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solver()
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interface = solver["interface between upper and lower block"]
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@test solver.properties.iteration == 2
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@test isapprox(norm(interface.assembly.u), 0.34230262165505887)
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end
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@testset "curved surface, adjust=true, dual basis, slave=lower surface, dy=-0.1" begin
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# TODO: analytical solution now known, verify using other fem software
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solver = get_model("mesh tie with curved 2d block";
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adjust=true, tolerance=10, dy=-0.1, rotate_normals=true,
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dual_basis=true, use_forwarddiff=true)
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solver()
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interface = solver["interface between upper and lower block"]
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@test solver.properties.iteration == 2
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@test isapprox(norm(interface.assembly.u), 0.34318800698017704)
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end
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=#
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@testset "compare forwarddiff solution to normal" begin
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X = Dict(
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1 => [0.0, 0.0],
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2 => [1.0, 0.0],
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3 => [0.0, 1.0],
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4 => [1.0, 1.0])
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u = Dict(
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1 => [0.0, 0.0],
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2 => [0.0, 0.0],
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3 => [0.0, 0.0],
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4 => [0.0, 0.0])
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sel1 = Element(Seg2, [1, 2])
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mel1 = Element(Seg2, [3, 4])
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update!([sel1, mel1], "geometry", X)
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update!([sel1, mel1], "displacement", u)
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update!(sel1, "master elements", [mel1])
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p1 = Problem(Mortar, "test 1", 2, "displacement")
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p2 = Problem(Mortar, "test 2", 2, "displacement")
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push!(p1, sel1, mel1)
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push!(p2, sel1, mel1)
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#p1.properties.adjust = true
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p2.properties.use_forwarddiff = true
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#p1.properties.dual_basis = true
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#p2.properties.dual_basis = true
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p2.assembly.u = zeros(8)
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p2.assembly.la = zeros(8)
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assemble!(p1, 0.0)
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assemble!(p2, 0.0)
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@test isapprox(p1.assembly, p2.assembly)
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#=
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empty!(p1.assembly)
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empty!(p2.assembly)
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p1.properties.adjust = true
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p2.properties.adjust = true
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assemble!(p1, 0.0)
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assemble!(p2, 0.0)
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C11 = full(p1.assembly.C1, 4, 8)
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C12 = full(p2.assembly.C1, 4, 8)
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C21 = full(p1.assembly.C2, 4, 8)
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C22 = full(p2.assembly.C2, 4, 8)
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D1 = full(p1.assembly.D)
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D2 = full(p2.assembly.D)
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g1 = full(p1.assembly.g, 4, 1)
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g2 = full(p2.assembly.g, 4, 1)
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println("C1")
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dump(C11)
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dump(C12)
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println("C2")
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dump(C21)
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dump(C22)
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println("D")
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dump(D1)
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dump(D2)
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println("g")
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dump(g1)
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dump(g2)
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@test isapprox(p1.assembly, p2.assembly)
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=#
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end
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