mirror of
https://github.com/JuliaFEM/JuliaFEM.jl.git
synced 2026-09-09 12:42:19 +00:00
Jukka Aho
53 lines
1.9 KiB
Julia
53 lines
1.9 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.Test
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@testset "test continuum nonlinear elasticity with surface load" begin
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nodes = Dict{Int64, Node}(
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1 => [0.0, 0.0, 0.0],
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2 => [1.0, 0.0, 0.0],
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3 => [1.0, 1.0, 0.0],
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4 => [0.0, 1.0, 0.0],
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5 => [0.0, 0.0, 1.0],
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6 => [1.0, 0.0, 1.0],
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7 => [1.0, 1.0, 1.0],
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8 => [0.0, 1.0, 1.0])
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element1 = Element(Hex8, [1, 2, 3, 4, 5, 6, 7, 8])
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element2 = Element(Quad4, [5, 6, 7, 8])
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update!([element1, element2], "geometry", nodes)
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update!([element1], "youngs modulus", 900.0)
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update!([element1], "poissons ratio", 0.25)
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update!([element2], "displacement traction force", Vector{Float64}[[0.0, 0.0, -100.0] for i=1:4])
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elasticity_problem = Problem(Elasticity, "solve continuum block", 3)
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elasticity_problem.properties.finite_strain = true
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push!(elasticity_problem, element1)
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push!(elasticity_problem, element2)
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symxy = Element(Quad4, [1, 2, 3, 4])
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symxz = Element(Quad4, [1, 2, 6, 5])
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symyz = Element(Quad4, [1, 4, 8, 5])
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update!([symxy, symxz, symyz], "geometry", nodes)
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symxy["displacement 3"] = 0.0
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symxz["displacement 2"] = 0.0
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symyz["displacement 1"] = 0.0
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boundary_problem = Problem(Dirichlet, "symmetry boundary conditions", 3, "displacement")
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push!(boundary_problem, symxy, symxz, symyz)
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solver = NonlinearSolver("solve 3d block")
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push!(solver, elasticity_problem)
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push!(solver, boundary_problem)
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call(solver)
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disp = element1("displacement", [1.0, 1.0, 1.0], 0.0)
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info("displacement at tip: $disp")
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# verified using Code Aster.
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# 2015-12-12-continuum-elasticity/vim c3d_grot_gdep_traction_force.comm
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@test isapprox(disp, [3.17431158889468E-02, 3.17431158889468E-02, -1.38591518927826E-01]; rtol=1.0e-4)
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end
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