mirror of
https://github.com/JuliaFEM/JuliaFEM.jl.git
synced 2026-08-06 04:21:33 +00:00
Jukka Aho
dce7472cda
`Analysis` is basically doing same than `Solver` before, but has a slighly simpler structure and is more general.
66 lines
2.3 KiB
Julia
66 lines
2.3 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.Testing
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@testset "test 2d nonlinear elasticity with surface load" begin
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meshfile = "/geometry/2d_block/BLOCK_1elem.med"
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mesh = aster_read_mesh(dirname(@__DIR__)*meshfile)
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# field problem
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block = Problem(Elasticity, "BLOCK", 2)
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block.properties.formulation = :plane_stress
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block.properties.finite_strain = true
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block.properties.geometric_stiffness = true
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block.elements = create_elements(mesh, "BLOCK")
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update!(block.elements, "youngs modulus", 288.0)
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update!(block.elements, "poissons ratio", 1/3)
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update!(block.elements, "displacement load 2", 576.0)
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traction = create_elements(mesh, "TOP")
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update!(traction, "displacement traction force 2", 288.0)
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push!(block, traction...)
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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 = create_elements(mesh, "LEFT")
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bc_elements_bottom = create_elements(mesh, "BOTTOM")
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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(Nonlinear, "solve block problem")
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add_problems!(solver, [block, bc_sym])
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solve!(solver, 0.0)
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# from code aster
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u3_expected = [-4.92316106779943E-01, 7.96321884292103E-01]
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eps_zz = -3.71128811855451E-01
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eps_expected = [-3.71128532282463E-01, 1.11338615599337E+00, 0.0]
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sig_expected = [ 3.36174888827909E-05, 2.23478729403118E+03, 0.0]
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u3 = reshape(block.assembly.u, 2, 4)[:, 3]
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info("u3 = $u3")
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@test isapprox(u3, u3_expected, atol=1.0e-5)
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#= TODO: Test postprocessing in separate test
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info("strain")
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for ip in get_integration_points(block.elements[1])
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eps = ip("strain")
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@printf "%i | %8.3f %8.3f | %8.3f %8.3f %8.3f\n" ip.id ip.coords[1] ip.coords[2] eps[1] eps[2] eps[3]
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@test isapprox(eps, eps_expected)
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end
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info("stress")
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for ip in get_integration_points(block.elements[1])
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sig = ip("stress")
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@printf "%i | %8.3f %8.3f | %8.3f %8.3f %8.3f\n" ip.id ip.coords[1] ip.coords[2] sig[1] sig[2] sig[3]
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#@test isapprox(sig, sig_expected)
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end
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=#
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end
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