DOC: update documentation d0ee6ea

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+workflows.docs.pyansys.com

_downloads/0a558143ee4cb586897ad4681c808fd3/wf_gmd_02_mechanical.ipynb

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+{
+  "cells": [
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "\n\n# Mechanical - Thermal analysis\n\nThis examples performs meshing, steady-state and transient thermal analysis of PCB.\nObjective of this example is to study or examine resulting temperatures caused by\nthe heat developed in chips.\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "import os\nfrom pathlib import Path\n\nimport ansys.mechanical.core as mech\nfrom matplotlib import image as mpimg\nfrom matplotlib import pyplot as plt"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## Preparing the environment\nThis section is only necessary for workflow runs and docs generation. It checks\nthe environment variables to determine which image to use for the mechanical service.\nIf you are running this script outside of a workflow, you can ignore this section.\n\n\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "version = None\nif \"ANSYS_MECHANICAL_RELEASE\" in os.environ:\n    image_tag = os.environ[\"ANSYS_MECHANICAL_RELEASE\"]\n    version = int(image_tag.replace(\".\", \"\"))"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## Parameters for the script\nThe following parameters are used to control the script execution. You can\nmodify these parameters to suit your needs.\n\n\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "GRAPHICS_BOOL = False  # Set to True to display the graphics\nOUTPUT_DIR = Path(Path(__file__).parent, \"outputs\")  # Output directory"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## Start a PyMechanical app\n\n\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "app = mech.App(version=version)\napp.update_globals(globals())\nprint(app)\n\n\ndef display_image(image_name):\n    plt.figure(figsize=(16, 9))\n    plt.imshow(mpimg.imread(os.path.join(OUTPUT_DIR, image_name)))\n    plt.xticks([])\n    plt.yticks([])\n    plt.axis(\"off\")\n    plt.show()"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## Configure graphics for image export\n\n\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "ExtAPI.Graphics.Camera.SetSpecificViewOrientation(ViewOrientationType.Iso)\nExtAPI.Graphics.Camera.SetFit()\nimage_export_format = GraphicsImageExportFormat.PNG\nsettings_720p = Ansys.Mechanical.Graphics.GraphicsImageExportSettings()\nsettings_720p.Resolution = GraphicsResolutionType.EnhancedResolution\nsettings_720p.Background = GraphicsBackgroundType.White\nsettings_720p.Width = 1280\nsettings_720p.Height = 720\nsettings_720p.CurrentGraphicsDisplay = False"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## Import geometry\nImport geometry which is generated with pyansys-geometry\n\n\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "geometry_path = Path(OUTPUT_DIR, \"pcb.pmdb\")\ngeometry_import_group = Model.GeometryImportGroup\ngeometry_import = geometry_import_group.AddGeometryImport()\ngeometry_import_format = Ansys.Mechanical.DataModel.Enums.GeometryImportPreference.Format.Automatic\ngeometry_import_preferences = Ansys.ACT.Mechanical.Utilities.GeometryImportPreferences()\ngeometry_import_preferences.ProcessNamedSelections = True\ngeometry_import.Import(str(geometry_path), geometry_import_format, geometry_import_preferences)\n\n# Plot geometry\nif GRAPHICS_BOOL:\n    app.plot()"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## Create named selections\n\n\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "ExtAPI.Application.ActiveUnitSystem = MechanicalUnitSystem.StandardMKS\n\n# Create named selection for all bodies\nbodies = Model.Geometry.GetChildren(DataModelObjectCategory.Body, True)\nbody_ids = [bd.GetGeoBody().Id for bd in bodies]\nselection = ExtAPI.SelectionManager.CreateSelectionInfo(SelectionTypeEnum.GeometryEntities)\nselection.Ids = body_ids\nns1 = Model.AddNamedSelection()\nns1.Name = \"all_bodies\"\nns1.Location = selection\n\n# Create named selection for all except substrate\nsubstrate_id = [bd.GetGeoBody().Id for bd in bodies if bd.Name.endswith(\"substrate\")]\nexcept_substrate_id = list(set(body_ids) - set(substrate_id))\n\nselection = ExtAPI.SelectionManager.CreateSelectionInfo(SelectionTypeEnum.GeometryEntities)\nselection.Ids = except_substrate_id\nns2 = Model.AddNamedSelection()\nns2.Name = \"all_except_board\"\nns2.Location = selection"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## Meshing\n\n\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "mesh = Model.Mesh\nmesh.GenerateMesh()\n\n# Export mesh image\nExtAPI.Graphics.Camera.SetFit()\nExtAPI.Graphics.ExportImage(\n    os.path.join(OUTPUT_DIR, \"mesh.png\"), image_export_format, settings_720p\n)\n\n# Display the mesh\nif GRAPHICS_BOOL:\n    display_image(\"mesh.png\")"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## Analysis\nSetup steady state thermal analysis\n\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "steady = Model.AddSteadyStateThermalAnalysis()\ntransient = Model.AddTransientThermalAnalysis()\n\ninternal_heat_generation = steady.AddInternalHeatGeneration()\nNSall = ExtAPI.DataModel.Project.Model.NamedSelections.GetChildren[\n    Ansys.ACT.Automation.Mechanical.NamedSelection\n](True)\nic6 = [i for i in NSall if i.Name == \"ic-6\"][0]\ninternal_heat_generation.Location = ic6\ninternal_heat_generation.Magnitude.Output.SetDiscreteValue(0, Quantity(5e7, \"W m^-1 m^-1 m^-1\"))\n\nall_bodies = [i for i in NSall if i.Name == \"all_bodies\"][0]\nconvection = steady.AddConvection()\nconvection.Location = all_bodies\nconvection.FilmCoefficient.Output.DiscreteValues = [Quantity(\"5[W m^-2 C^-1]\")]\n\nsteady_solution = steady.Solution\ntemperature_result = steady_solution.AddTemperature()\nsteady_solution.Solve(True)\n\n# Transient analysis setup\ninitial_condition = transient.InitialConditions[0]\ninitial_condition.InitialTemperature = InitialTemperatureType.NonUniform\ninitial_condition.InitialEnvironment = steady\n\ntransient_analysis_settings = transient.AnalysisSettings\ntransient_analysis_settings.StepEndTime = Quantity(200, \"sec\")\n\ninternal_heat_generation2 = transient.AddInternalHeatGeneration()\n\nic1 = [i for i in NSall if i.Name == \"ic-1\"][0]\ninternal_heat_generation2.Location = ic1\ninternal_heat_generation2.Magnitude.Output.SetDiscreteValue(0, Quantity(5e7, \"W m^-1 m^-1 m^-1\"))"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## Add result objects\n\n\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "transient_solution = transient.Solution\ntransient_temperature_result = transient_solution.AddTemperature()\ntemperature_probe1 = transient_solution.AddTemperatureProbe()\ntemperature_probe1.GeometryLocation = ic6\ntemperature_probe2 = transient_solution.AddTemperatureProbe()\ntemperature_probe2.GeometryLocation = ic1"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## Solve\n\n\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "transient_solution.Solve(True)"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "## Save files and close Mechanical\nMechanical file (mechdb) contains results for each analysis\n\n\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false
+      },
+      "outputs": [],
+      "source": [
+        "app.save(os.path.join(OUTPUT_DIR, \"pcb.mechdb\"))\nproject_directory = ExtAPI.DataModel.Project.ProjectDirectory\napp.exit()"
+      ]
+    }
+  ],
+  "metadata": {
+    "kernelspec": {
+      "display_name": "Python 3",
+      "language": "python",
+      "name": "python3"
+    },
+    "language_info": {
+      "codemirror_mode": {
+        "name": "ipython",
+        "version": 3
+      },
+      "file_extension": ".py",
+      "mimetype": "text/x-python",
+      "name": "python",
+      "nbconvert_exporter": "python",
+      "pygments_lexer": "ipython3",
+      "version": "3.12.7"
+    }
+  },
+  "nbformat": 4,
+  "nbformat_minor": 0
+}