mirror of
https://github.com/JuliaFEM/JuliaFEM.jl.git
synced 2026-09-20 10:08:31 +00:00
Jukka Aho
39 lines
1.6 KiB
Julia
39 lines
1.6 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.Test
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using JuliaFEM.Preprocess: aster_create_elements, parse_aster_med_file
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using JuliaFEM.Core: Problem, Elasticity, Dirichlet, Solver, update!
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@testset "test 2d linear elasticity with surface load" begin
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meshfile = "/geometry/2d_block/BLOCK_1elem.med"
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mesh = parse_aster_med_file(Pkg.dir("JuliaFEM")*meshfile)
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# field problem
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body = Problem(Elasticity, "BLOCK", 2)
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body.properties.formulation = :plane_stress
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body_elements = aster_create_elements(mesh, :BLOCK, :QU4)
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update!(body_elements, "youngs modulus", 900.0)
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update!(body_elements, "poissons ratio", 0.25)
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trac_elements = aster_create_elements(mesh, :TOP, :SE2)
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update!(trac_elements, "displacement traction force 2", -100.0)
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push!(body, body_elements..., trac_elements...)
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# boundary conditions
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bc_sym = Problem(Dirichlet, "symmetry bc", 2, "displacement")
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bc_elements_left = aster_create_elements(mesh, :LEFT, :SE2)
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bc_elements_bottom = aster_create_elements(mesh, :BOTTOM, :SE2)
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update!(bc_elements_left, "displacement 1", 0.0)
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update!(bc_elements_bottom, "displacement 2", 0.0)
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push!(bc_sym, bc_elements_left..., bc_elements_bottom...)
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solver = Solver("solve block problem")
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body.properties.finite_strain = false
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push!(solver, body, bc_sym)
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call(solver)
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f = -100.0
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E = 900.0
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nu = 0.25
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u3_expected = f/E*[-nu, 1]
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u3 = reshape(body.assembly.u, 2, 4)[:,3]
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@test isapprox(u3, u3_expected)
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end
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