mirror of
https://github.com/JuliaFEM/JuliaFEM.jl.git
synced 2026-08-13 07:37:43 +00:00
dirichlet
This commit is contained in:
Jukka Aho
@@ -188,14 +188,14 @@
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"29-Sep 00:06:50:INFO:root:Testing element MyQuad4\n",
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"29-Sep 00:06:50:INFO:root:number of basis functions in this element: 4\n",
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"29-Sep 00:06:50:INFO:root:Initializing element\n",
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"29-Sep 00:06:50:INFO:root:Element dimension: 2\n",
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"29-Sep 00:06:50:INFO:root:Creating new scalar field JuliaFEM.Field{Array{Int64,1}}(0.0,1,[1,2,3,4])\n",
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"29-Sep 00:06:50:INFO:root:Pushing field to element.\n",
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"29-Sep 00:06:50:INFO:root:Interpolating scalar field at [0.0,0.0]\n",
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"29-Sep 00:06:51:INFO:root:Value: 2.5\n"
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"30-Sep 09:08:39:INFO:root:Testing element MyQuad4\n",
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"30-Sep 09:08:39:INFO:root:number of basis functions in this element: 4\n",
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"30-Sep 09:08:39:INFO:root:Initializing element\n",
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"30-Sep 09:08:40:INFO:root:Element dimension: 2\n",
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"30-Sep 09:08:40:INFO:root:Creating new scalar field JuliaFEM.Field{Array{Int64,1}}(0.0,1,[1,2,3,4])\n",
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"30-Sep 09:08:40:INFO:root:Pushing field to element.\n",
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"30-Sep 09:08:40:INFO:root:Interpolating scalar field at [0.0,0.0]\n",
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"30-Sep 09:08:40:INFO:root:Value: 2.5\n"
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]
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},
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{
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@@ -244,7 +244,7 @@
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"29-Sep 00:06:51:INFO:root:Element MyQuad4 passed tests.\n"
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"30-Sep 09:08:40:INFO:root:Element MyQuad4 passed tests.\n"
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]
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}
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],
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@@ -762,7 +762,7 @@
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"29-Sep 00:06:53:DEBUG:root:Problem (matrix) dimension: 4\n"
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"30-Sep 09:08:43:DEBUG:root:Problem (matrix) dimension: 4\n"
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]
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},
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{
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@@ -864,9 +864,7 @@
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{
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"data": {
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"text/plain": [
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"2x4 Array{Float64,2}:\n",
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" 0.0 0.0 0.333333 0.166667\n",
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" 0.0 0.0 0.166667 0.333333"
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"InterfaceProblem"
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]
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},
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"execution_count": 25,
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@@ -875,12 +873,15 @@
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}
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],
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"source": [
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"M = 1/6*[0 0 2 1; 0 0 1 2]"
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"type InterfaceProblem <: Problem\n",
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" equations :: Array{Equation, 1}\n",
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"end\n",
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"InterfaceProblem() = InterfaceProblem([])"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 26,
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"execution_count": 48,
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"metadata": {
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"collapsed": false
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},
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@@ -888,32 +889,198 @@
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{
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"data": {
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"text/plain": [
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"6-element Array{Float64,1}:\n",
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" 100.0 \n",
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" 100.0 \n",
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" 1.36187e-14\n",
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" 1.77636e-15\n",
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" 600.0 \n",
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" 600.0 "
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"get_equation (generic function with 4 methods)"
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]
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},
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"execution_count": 26,
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"execution_count": 48,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"[A M'; M zeros(2, 2)] \\ [b; 0; 0]"
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"abstract DirichletBC <: Equation\n",
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"\n",
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"\"\"\"\n",
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"Dirichlet boundary condition element for 2 node line segment\n",
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"(plane problems).\n",
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"\"\"\"\n",
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"type DBC2D2 <: DirichletBC\n",
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" element :: Seg2\n",
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" integration_points :: Array{IntegrationPoint, 1}\n",
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" global_dofs :: Array{Int64, 1}\n",
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" fieldval :: Function\n",
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"end\n",
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"#function DBC2D2(el::Seg2, args...)\n",
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"function DBC2D2(el::Seg2)\n",
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" integration_points = [\n",
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" IntegrationPoint([-sqrt(1/3)], 1.0),\n",
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" IntegrationPoint([+sqrt(1/3)], 1.0)]\n",
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" new_field!(el, \"reaction force\")\n",
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" fieldval(X, t) = 0.0\n",
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"# if length(args) != 0\n",
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"# for (k, v) in args\n",
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"# if k == :fieldval\n",
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"# fieldval = v\n",
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"# end\n",
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"# end\n",
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"# end\n",
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" DBC2D2(el, integration_points, [], fieldval)\n",
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"end\n",
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"\n",
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"function JuliaFEM.get_lhs(eq::DBC2D2, ip, t)\n",
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" el = get_element(eq)\n",
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" h = get_basis(el)(ip.xi)\n",
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" println(\"basis h: $h\")\n",
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" out = h*h'\n",
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" return out\n",
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"end\n",
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"\n",
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"function JuliaFEM.get_rhs(eq::DBC2D2, ip, t)\n",
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" el = get_element(eq)\n",
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" h = get_basis(el)\n",
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" #f = eq.fieldval\n",
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" #X = interpolate(el, :Geometry, ip.xi, t)\n",
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" #return h(ip.xi, t)*f(X, t)\n",
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" return [0.0, 0.0]\n",
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"end\n",
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"JuliaFEM.has_lhs(eq::DBC2D2) = true\n",
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"JuliaFEM.has_rhs(eq::DBC2D2) = true\n",
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"JuliaFEM.get_dimension(pr::Type{InterfaceProblem}) = 1\n",
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"JuliaFEM.get_equation(pr::Type{InterfaceProblem}, el::Type{Seg2}) = DBC2D2"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 49,
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"metadata": {
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"collapsed": true
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"collapsed": false
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},
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"outputs": [],
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"source": []
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"outputs": [
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{
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"30-Sep 09:15:17:DEBUG:root:Problem (matrix) dimension: 2\n"
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]
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},
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"lhs\n"
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]
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},
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{
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"ename": "LoadError",
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"evalue": "LoadError: MethodError: `call` has no method matching call(::JuliaFEM.Basis, ::Array{Float64,1}, ::Float64)\nClosest candidates are:\n BoundsError(!Matched::Any...)\n TypeVar(!Matched::Any...)\n TypeConstructor(!Matched::Any...)\n ...\nwhile loading In[49], in expression starting on line 17",
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"output_type": "error",
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"traceback": [
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"LoadError: MethodError: `call` has no method matching call(::JuliaFEM.Basis, ::Array{Float64,1}, ::Float64)\nClosest candidates are:\n BoundsError(!Matched::Any...)\n TypeVar(!Matched::Any...)\n TypeConstructor(!Matched::Any...)\n ...\nwhile loading In[49], in expression starting on line 17",
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"",
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" in get_lhs at In[48]:32",
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" in integrate at /home/jukka/.julia/v0.4/JuliaFEM/src/equations.jl:69",
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" in integrate_lhs at /home/jukka/.julia/v0.4/JuliaFEM/src/equations.jl:36",
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" [inlined code] from In[49]:21",
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" in anonymous at no file:0"
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]
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}
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],
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"source": [
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"# create elements and add necessary properties like connectivity and geometry\n",
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"el3 = Seg2([1, 2])\n",
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"new_field!(el2, :Geometry, Field(0.0, Vector[[0.0, 0.0], [0.0, 1.0]]))\n",
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"\n",
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"bc1 = InterfaceProblem()\n",
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"add_element!(bc1, el3)\n",
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"\n",
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"# set global dofs for equations\n",
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"set_global_dofs!(bc1)\n",
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"\n",
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"n = get_matrix_dimension(bc1)\n",
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"\n",
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"# integrate and assembly\n",
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"t = 1.0\n",
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"A = zeros(n, n)\n",
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"b = zeros(n)\n",
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"for eq in get_equations(bc1)\n",
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" dofs = get_global_dofs(eq)\n",
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" println(\"lhs\")\n",
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" if has_lhs(eq)\n",
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" A[dofs, dofs] += integrate_lhs(eq, t)\n",
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" end\n",
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" println(\"rhs\")\n",
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" if has_rhs(eq)\n",
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" b[dofs] += integrate_rhs(eq, t)\n",
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" end\n",
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"end\n",
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"A2, b2"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 28,
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"metadata": {
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"collapsed": false
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},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"DBC2D2"
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]
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},
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"execution_count": 28,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"JuliaFEM.get_equation(typeof(bc1), typeof(el3))"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 29,
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"metadata": {
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"collapsed": false
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},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"DBC2D2(JuliaFEM.Seg2([1,2],JuliaFEM.Basis(basis,j),Dict(symbol(\"reaction force\")=>JuliaFEM.Field[])),[JuliaFEM.IntegrationPoint([-0.5773502691896257],1.0,Dict{Any,Any}()),JuliaFEM.IntegrationPoint([0.5773502691896257],1.0,Dict{Any,Any}())],Int64[],fieldval)"
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]
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},
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"execution_count": 29,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"DBC2D2(el3)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 30,
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"metadata": {
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"collapsed": false
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},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"JuliaFEM.Seg2([1,2],JuliaFEM.Basis(basis,j),Dict(symbol(\"reaction force\")=>JuliaFEM.Field[]))"
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]
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},
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"execution_count": 30,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"el3"
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]
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}
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],
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"metadata": {
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@@ -276,6 +276,9 @@ end
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function new_field!(el::Element, field_name::ASCIIString, field::Field)
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new_field!(el, Symbol(field_name), field)
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end
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function new_field!(el::Element, field_name::ASCIIString)
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new_field!(el, Symbol(field_name))
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end
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""" Push to existing set field of fields. """
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