mirror of
https://github.com/JuliaFEM/JuliaFEM.jl.git
synced 2026-08-20 12:12:06 +00:00
Jukka Aho
ca7e2904cf
* Fix deprecation warnings from tests * Refactor tests so that ´@testset` is usually called in master file `runtests.jl`, not inside test file. Later on we can convert tests to examples. * Syntax of tests now follow more closely syntax used currently in JuliaFEM. We have had earlier studies with different kind of syntaxes, now we have kind of explicit way to do things.
98 lines
4.1 KiB
Julia
98 lines
4.1 KiB
Julia
# This file is a part of JuliaFEM.
|
|
# License is MIT: see https://github.com/JuliaFEM/JuliaFEM.jl/blob/master/LICENSE.md
|
|
|
|
using JuliaFEM, Test, Statistics
|
|
|
|
datadir = first(splitext(basename(@__FILE__)))
|
|
|
|
mesh = abaqus_read_mesh(joinpath(datadir, "tet4.inp"))
|
|
|
|
upper = Problem(Elasticity, "UPPER", 3)
|
|
upper_elements = create_elements(mesh, "UPPER")
|
|
update!(upper_elements, "youngs modulus", 3*288.0)
|
|
update!(upper_elements, "poissons ratio", 1/3)
|
|
add_elements!(upper, upper_elements)
|
|
push!(upper.postprocess_fields, "strain", "stress")
|
|
@info("upper postprocess: $(upper.postprocess_fields)")
|
|
|
|
lower = Problem(Elasticity, "LOWER", 3)
|
|
lower_elements = create_elements(mesh, "LOWER")
|
|
update!(lower_elements, "youngs modulus", 288.0)
|
|
update!(lower_elements, "poissons ratio", 1/3)
|
|
add_elements!(lower, lower_elements)
|
|
push!(lower.postprocess_fields, "strain", "stress")
|
|
@info("lower postprocess: $(lower.postprocess_fields)")
|
|
|
|
bc_upper = Problem(Dirichlet, "UPPER_TOP", 3, "displacement")
|
|
bc_upper_elements = create_surface_elements(mesh, "UPPER_TOP")
|
|
update!(bc_upper_elements, "displacement 3", -0.4)
|
|
add_elements!(bc_upper, bc_upper_elements)
|
|
|
|
bc_lower = Problem(Dirichlet, "LOWER_BOTTOM", 3, "displacement")
|
|
bc_lower_elements = create_surface_elements(mesh, "LOWER_BOTTOM")
|
|
update!(bc_lower_elements, "displacement 3", 0.0)
|
|
add_elements!(bc_lower, bc_lower_elements)
|
|
|
|
# point-wise boundary conditions to prevent free body move
|
|
nid1 = find_nearest_nodes(mesh, [0.0, 0.0, 0.0])[1]
|
|
nid2 = find_nearest_nodes(mesh, [1.0, 0.0, 0.0])[1]
|
|
nid3 = find_nearest_nodes(mesh, [0.0, 1.0, 0.0])[1]
|
|
nid4 = find_nearest_nodes(mesh, [0.0, 0.0, 1.0])[1]
|
|
nid5 = find_nearest_nodes(mesh, [1.0, 0.0, 1.0])[1]
|
|
nid6 = find_nearest_nodes(mesh, [0.0, 1.0, 1.0])[1]
|
|
|
|
bc_sym13 = Problem(Dirichlet, "SYM13", 3, "displacement")
|
|
# nodes in X2=0 plane
|
|
bc_sym13_elements = [Element(Poi1, [j]) for j in [nid1, nid2, nid4, nid5]]
|
|
update!(bc_sym13_elements, "geometry", mesh.nodes)
|
|
update!(bc_sym13_elements, "displacement 2", 0.0)
|
|
add_elements!(bc_sym13, bc_sym13_elements)
|
|
|
|
bc_sym23 = Problem(Dirichlet, "SYM23", 3, "displacement")
|
|
# nodes in X1=0 plane
|
|
bc_sym23_elements = [Element(Poi1, [j]) for j in [nid1, nid3, nid4, nid6]]
|
|
update!(bc_sym23_elements, "geometry", mesh.nodes)
|
|
update!(bc_sym23_elements, "displacement 1", 0.0)
|
|
add_elements!(bc_sym23, bc_sym23_elements)
|
|
|
|
push!(bc_upper.postprocess_fields, "reaction force")
|
|
push!(bc_lower.postprocess_fields, "reaction force")
|
|
push!(bc_sym13.postprocess_fields, "reaction force")
|
|
push!(bc_sym23.postprocess_fields, "reaction force")
|
|
|
|
interface = Problem(Contact, "LOWER_TO_UPPER", 3, "displacement")
|
|
interface_slave_elements = create_surface_elements(mesh, "LOWER_TO_UPPER")
|
|
interface_master_elements = create_surface_elements(mesh, "UPPER_TO_LOWER")
|
|
update!(interface_slave_elements, "master elements", interface_master_elements)
|
|
interface.elements = [interface_slave_elements; interface_master_elements]
|
|
interface.properties.dual_basis = true
|
|
interface.properties.contact_state_in_first_iteration = :AUTO
|
|
push!(interface.postprocess_fields, "contact pressure")
|
|
|
|
analysis = Analysis(Nonlinear)
|
|
add_problems!(analysis, upper, lower, bc_upper, bc_lower,
|
|
bc_sym13, bc_sym23, interface)
|
|
|
|
xdmf = Xdmf("contact_two_blocks_postprocess"; overwrite=true)
|
|
add_results_writer!(analysis, xdmf)
|
|
run!(analysis)
|
|
|
|
node_ids, displacement = get_nodal_vector(interface.elements, "displacement", 0.0)
|
|
node_ids, geometry = get_nodal_vector(interface.elements, "geometry", 0.0)
|
|
# node_ids, pressure = get_nodal_vector(interface.elements, "contact pressure", 0.0)
|
|
u3 = [u[3] for u in displacement]
|
|
maxabsu3 = maximum(abs.(u3))
|
|
stdabsu3 = std(abs.(u3))
|
|
@debug("max(abs(u3)) = $maxabsu3, std(abs(u3)) = $stdabsu3")
|
|
@test isapprox(stdabsu3, 0.0; atol=1.0e-12)
|
|
upper_X = [0.5, 0.5, 0.75]
|
|
lower_X = [0.5, 0.5, 0.25]
|
|
strain_upper = upper("strain", upper_X, 0.0)
|
|
stress_upper = upper("stress", upper_X, 0.0)
|
|
strain_lower = lower("strain", lower_X, 0.0)
|
|
stress_lower = lower("stress", lower_X, 0.0)
|
|
@debug("strain at $upper_X = $strain_upper")
|
|
@debug("stress at $upper_X = $stress_upper")
|
|
@debug("strain at $lower_X = $strain_lower")
|
|
@debug("stress at $lower_X = $stress_lower")
|