FEM MeshNetgenFromShape/ru: Difference between revisions
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{{Docnav|[[FEM_ConstraintBodyHeatSource|Constraint body heat source]]|[[FEM_MeshGmshFromShape|FEM mesh from shape by GMSH]]|[[FEM_Module|FEM]]|IconL=Fem-constraint-heatflux.svg|IconC=Workbench_FEM.svg|IconR=FEM_MeshGmshFromShape.png}} |
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{{Docnav |
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{{GuiCommand/ru|Name=FEM MeshNetgenFromShape|Name/ru=FEM MeshNetgenFromShape|MenuLocation=FEM → FEM mesh from shape by Netgen||Workbenches=[[Fem Workbench/ru|FEM]]|Shortcut=|SeeAlso=[[FEM_tutorial/ru|FEM tutorial]]}} |
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|[[FEM_ConstantVacuumPermittivity|Constant vacuum permittivity]] |
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|[[FEM_MeshGmshFromShape|FEM mesh from shape by Gmsh]] |
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|[[FEM_Workbench|FEM]] |
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|IconL=FEM_ConstantVacuumPermittivity.svg |
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|IconR=FEM_MeshGmshFromShape.svg |
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|IconC=Workbench_FEM.svg |
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}} |
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<div class="mw-translate-fuzzy"> |
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{{GuiCommand/ru |
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|Name=FEM MeshNetgenFromShape |
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|Name/ru=FEM MeshNetgenFromShape |
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|MenuLocation=FEM → FEM mesh from shape by Netgen |
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||Workbenches=[[FEM_Workbench/ru|FEM]] |
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|Shortcut= |
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|SeeAlso=[[FEM_tutorial/ru|FEM tutorial]] |
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}} |
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</div> |
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==Description== |
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For a finite element analysis the geometry needs to be discretized into a [[FEM_Mesh|FEM Mesh]]. This command uses Netgen (which needs to be installed on the system) for calculating the mesh. |
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ToDo |
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Depending on your operating system and your installation package Netgen might be bundled with FreeCAD or not. For further information see [[FEM_Install|FEM Install]]. |
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==Usage== |
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<br /> |
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# Select the shape you want to analyze. For a volume, this needs to be a solid or compsolid. A compsolid is necessary if your part is made from multiple materials. (A compsolid can be created with the [[Part_BooleanFragments|Part BooleanFragments]] command.) |
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{{Docnav|[[FEM_ConstraintBodyHeatSource|Constraint body heat source]]|[[FEM_MeshGmshFromShape|FEM mesh from shape by GMSH]]|[[FEM_Module|FEM]]|IconL=Fem-constraint-heatflux.svg|IconC=Workbench_FEM.svg|IconR=FEM_MeshGmshFromShape.png}} |
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#* Press the {{Button|[[Image:FEM_MeshNetgenFromShape.svg|16px]] [[FEM_MeshNetgenFromShape|FEM mesh from shape by Netgen]]}} button, or |
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#* Select the {{MenuCommand|Mesh → [[Image:FEM_MeshGmshFromShape.svg|16px]] FEM mesh from shape by Netgen}} option from the menu. |
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# Optionally, edit the parameters. |
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# Click the {{Button|Apply}} button to make a mesh, or {{Button|OK}} button to make a mesh and close the dialogue. |
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== Properties == |
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* {{PropertyData|Max. Size}}: Maximum size of the element in mm. |
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* {{PropertyData|Second order}}: Second order elements contain more nodes per element. Usually, it is enough to use rougher mesh to obtain same solution precision as with the first order elements, |
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** true (default); second order elements, |
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** false; first order elements. |
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* {{PropertyData|Fineness}}: Offers predefined levels of mesh density. |
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* {{PropertyData|Growth Rate}}: Defines how much adjacent elements can differ in size. |
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* {{PropertyData|Nb. Segs per Edge}}: Defines the minimum number of mesh segments per edge. |
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* {{PropertyData|Nb. Segs per Radius}}: Defines the minimum number of mesh segments per radius. |
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* {{PropertyData|Optimize}}: |
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** true (default): applies optimization algorithm to improve mesh quality |
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** false |
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{{Docnav |
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|[[FEM_ConstantVacuumPermittivity|Constant vacuum permittivity]] |
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|[[FEM_MeshGmshFromShape|FEM mesh from shape by Gmsh]] |
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|[[FEM_Workbench|FEM]] |
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|IconL=FEM_ConstantVacuumPermittivity.svg |
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|IconR=FEM_MeshGmshFromShape.svg |
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|IconC=Workbench_FEM.svg |
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}} |
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Latest revision as of 13:06, 24 November 2023
FEM MeshNetgenFromShape |
Системное название |
---|
FEM MeshNetgenFromShape |
Расположение в меню |
FEM → FEM mesh from shape by Netgen |
Верстаки |
FEM |
Быстрые клавиши |
Нет |
Представлено в версии |
- |
См. также |
FEM tutorial |
Description
For a finite element analysis the geometry needs to be discretized into a FEM Mesh. This command uses Netgen (which needs to be installed on the system) for calculating the mesh.
Depending on your operating system and your installation package Netgen might be bundled with FreeCAD or not. For further information see FEM Install.
Usage
- Select the shape you want to analyze. For a volume, this needs to be a solid or compsolid. A compsolid is necessary if your part is made from multiple materials. (A compsolid can be created with the Part BooleanFragments command.)
- Press the FEM mesh from shape by Netgen button, or
- Select the Mesh → FEM mesh from shape by Netgen option from the menu.
- Optionally, edit the parameters.
- Click the Apply button to make a mesh, or OK button to make a mesh and close the dialogue.
Properties
- ДанныеMax. Size: Maximum size of the element in mm.
- ДанныеSecond order: Second order elements contain more nodes per element. Usually, it is enough to use rougher mesh to obtain same solution precision as with the first order elements,
- true (default); second order elements,
- false; first order elements.
- ДанныеFineness: Offers predefined levels of mesh density.
- ДанныеGrowth Rate: Defines how much adjacent elements can differ in size.
- ДанныеNb. Segs per Edge: Defines the minimum number of mesh segments per edge.
- ДанныеNb. Segs per Radius: Defines the minimum number of mesh segments per radius.
- ДанныеOptimize:
- true (default): applies optimization algorithm to improve mesh quality
- false
FEM
- Materials: Solid, Fluid, Nonlinear mechanical, Reinforced (concrete); Material editor
- Element geometry: Beam (1D), Beam rotation (1D), Shell (2D), Fluid flow (1D)
Constraints
- Electromagnetic: Electrostatic potential, Current density, Magnetization
- Geometrical: Plane rotation, Section print, Transform
- Mechanical: Fixed, Displacement, Contact, Tie, Spring, Force, Pressure, Centrif, Self weight
- Thermal: Initial temperature, Heat flux, Temperature, Body heat source
- Overwrite Constants: Constant vacuum permittivity
- Solve: CalculiX Standard, Elmer, Mystran, Z88; Equations: Deformation, Elasticity, Electrostatic, Electricforce, Magnetodynamic, Magnetodynamic 2D, Flow, Flux, Heat; Solver: Solver control, Solver run
- Results: Purge, Show; Postprocessing: Apply changes, Pipeline from result, Warp filter, Scalar clip filter, Function cut filter, Region clip filter, Contours filter, Line clip filter, Stress linearization plot, Data at point clip filter, Filter function plane, Filter function sphere, Filter function cylinder, Filter function box
- Additional: Preferences; FEM Install, FEM Mesh, FEM Solver, FEM CalculiX, FEM Concrete; FEM Element Types
Документация пользователя
- Начинающим
- Установка: Загрузка, Windows, Linux, Mac, Дополнительных компонентов, Docker, AppImage, Ubuntu Snap
- Базовая: О FreeCAD, Интерфейс, Навигация мыши, Методы выделения, Имя объекта, Настройки, Верстаки, Структура документа, Свойства, Помоги FreeCAD, Пожертвования
- Помощь: Учебники, Видео учебники
- Верстаки: Std Base, Arch, Assembly, CAM, Draft, FEM, Inspection, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Surface, TechDraw, Test Framework