mirror of
https://github.com/JuliaFEM/JuliaFEM.jl.git
synced 2026-09-26 11:51:31 +00:00
Jukka Aho
90 lines
2.9 KiB
Julia
90 lines
2.9 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.Testing
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function get_model()
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X = Dict{Int, Vector{Float64}}(
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1 => [0.0, 0.0],
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2 => [1.0, 0.0],
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3 => [1.0, 1.0],
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4 => [0.0, 1.0])
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body = Problem(Elasticity, "body", 2)
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body.properties.formulation = :plane_stress
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body.elements = [Element(Quad4, [1, 2, 3, 4])]
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update!(body.elements, "geometry", X)
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update!(body.elements, "youngs modulus", 288.0)
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update!(body.elements, "poissons ratio", 1/3)
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# boundary conditions
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bc_13 = Problem(Dirichlet, "symmetry 13", 2, "displacement")
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bc_13.properties.dual_basis = true
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bc_13.elements = [Element(Seg2, [1, 2])]
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update!(bc_13.elements, "geometry", X)
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update!(bc_13.elements, "displacement 2", 0.0)
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bc_23 = Problem(Dirichlet, "symmetry 23", 2, "displacement")
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bc_23.properties.dual_basis = true
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bc_23.elements = [Element(Seg2, [4, 1])]
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update!(bc_23.elements, "geometry", X)
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update!(bc_23, "displacement 1", 0.0)
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push!(bc_13.assembly.removed_dofs, 1, 2)
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solver = Solver(Nonlinear, "1x1 plane stress quad4 block")
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push!(solver, body, bc_13, bc_23)
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return solver
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end
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@testset "test dirichlet spc in point" begin
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X = Dict{Int, Vector{Float64}}(
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1 => [0.0, 0.0],
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2 => [1.0, 0.0],
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3 => [1.0, 1.0],
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4 => [0.0, 1.0])
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solver = get_model()
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update!(solver["symmetry 13"], "displacement 1", 0.0)
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update!(solver["symmetry 23"], "displacement 2", 0.0)
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nodal_bc = Problem(Dirichlet, "dx=0.5", 2, "displacement")
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nodal_bc.elements = [Element(Poi1, [3])]
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update!(nodal_bc, "geometry", X)
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update!(nodal_bc, "displacement 1", 0.5)
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update!(nodal_bc, "displacement 2", 0.0)
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push!(solver, nodal_bc)
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initialize!(solver["symmetry 13"])
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initialize!(solver["symmetry 23"])
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assemble!(solver["symmetry 13"])
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assemble!(solver["symmetry 23"])
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println(sparse(solver["symmetry 13"].assembly.C2))
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println(sparse(solver["symmetry 23"].assembly.C2))
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solver()
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pel = nodal_bc.elements[1]
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la = pel("reaction force", [0.0], 0.0)
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info("reaction force: $la")
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info(solver["body"].assembly.u)
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@test isapprox(pel("displacement", [], 0.0), [0.5, 0.0])
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end
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@testset "test nodal point force" begin
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X = Dict{Int, Vector{Float64}}(
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1 => [0.0, 0.0],
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2 => [1.0, 0.0],
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3 => [1.0, 1.0],
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4 => [0.0, 1.0])
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solver = get_model()
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update!(solver["symmetry 13"], "displacement 1", 0.0)
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update!(solver["symmetry 23"], "displacement 2", 0.0)
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point_load = Element(Poi1, [3])
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update!(point_load, "geometry", X)
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update!(point_load, "displacement traction force 1", 72.0)
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update!(point_load, "displacement traction force 2", 27.0)
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push!(solver["body"], point_load)
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solver()
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@test isapprox(point_load("displacement", [], 0.0), [0.5, 0.0])
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end
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