mirror of
https://github.com/JuliaFEM/JuliaFEM.jl.git
synced 2026-10-02 22:31:31 +00:00
Jukka Aho
41 lines
1.2 KiB
Julia
41 lines
1.2 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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"""
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Shared helpers for small `Hex8` brick regression tests (structured mesh,
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boundary DOF collection, interior load DOF).
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"""
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using JuliaFEM
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function brick_hex_mesh(nx::Int, ny::Int, nz::Int)
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return create_structured_box_mesh(Hex8;
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xmin = 0.0, xmax = 1.0, nx = nx,
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ymin = 0.0, ymax = 1.0, ny = ny,
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zmin = 0.0, zmax = 1.0, nz = nz,
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)
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end
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function collect_vertex_dofs_on_nodeset(handler, mesh, set_sym::Symbol)
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d = Int[]
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for nid in get_nodes_in_set(mesh, set_sym)
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append!(d, get_node_dofs(handler, Int(nid)))
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end
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sort!(unique!(d))
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return d
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end
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function interior_uz_dof_index(handler, mesh; x_threshold::Float64 = 0.25)
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for i in 1:length(mesh.nodes)
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mesh.nodes[i][1] > x_threshold || continue
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nd = get_node_dofs(handler, i)
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return Int(nd[3])
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end
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error("no interior node for load (x_threshold = $x_threshold)")
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end
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"""First global DOF index for `field_idx` on `elem_id` (cell-centred fields)."""
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@inline function first_field_dof(handler, field_idx::Int, elem_id::Int = 1)
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return handler.field_starts[field_idx][elem_id]
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end
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