FEM Электростатическое уравнение
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| Расположение в меню |
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| Solve → Equation electrostatic |
| Верстаки |
| FEM |
| Быстрые клавиши |
| Нет |
| Представлено в версии |
| - |
| См. также |
| FEM tutorial |
Description
В разработке...
For information about the math of the equation, see the Elmer models manual, section Electrostatics.
Usage
- Add an
Elmer solver.
- Select it in the Tree View.
- There are several ways to invoke the command:
- Press the
Electrostatic Equation button.
- Select the Solve → Electromagnetic Equations →
Electrostatic Equation option from the menu.
- Press the
- Change the equation's solver settings or the general solver settings if necessary.
Solver Settings
For the general solver settings, see the Elmer solver settings.
The electrostatic equation provides these special settings:
- ДанныеCalculate Capacitance Matrix: Calculates the capacitance matrix. The matrix contains the point charges of the mesh knots.
- ДанныеCalculate Electric Energy: Calculates the electric potential energy.
- ДанныеCalculate Electric Field: Calculates the electric field.
- ДанныеCalculate Electric Flux: Calculates the electric flux.
- ДанныеCalculate Surface Charge: Calculates the surface charge.
- ДанныеCapacitance Matrix Filename: File in which the capacitance matrix is being saved. It is only used if ДанныеCalculate Capacitance Matrix is set to true.
- ДанныеConstant Weights: If constant weighting for results is used.
- ДанныеPotential Difference: Potential difference in Volt for which the capacitance is calculated. It is only used if ДанныеCalculate Capacitance Matrix is set to false. Therefore in fact this setting specifies the voltage between the electrodes of a simple capacitor. Note that the given voltage has to be consistent with the potentials defined in the boundary conditions.
Analysis Feature Information
The electrostatic equation takes the following analysis features into account if they are set:
Note
Except for calculations in 2D, for electrostatic potential boundary conditions it is important that they act on a face or body. Boundary conditions in 3D set to lines or vertices are not recognized by the Elmer solver.
Results
The available results depend on the solver settings. If none of the ДанныеCalculate * settings was set to true, only the electric force density and the electric potential are calculated. Otherwise also the corresponding results will be available.
The possible results are:
- Electric energy density in
- Electric field in
- Electric flux in
- Electric force density in
- Potential in
- Potential loads in
- Materials: Solid Material, Fluid Material, Non-Linear Mechanical Material, Reinforced Material (Concrete); Material Editor
- Element Geometry: Beam Cross Section, Beam Rotation, Shell Plate Thickness, Fluid Section for 1D Flow
- Electromagnetic Boundary Conditions: Electrostatic Potential Boundary Condition, Current Density Boundary Condition, Magnetization Boundary Condition, Electric Charge Density
- Fluid Boundary Conditions: Initial Flow Velocity Condition, Initial Pressure Condition, Flow Velocity Boundary Condition
- Geometrical Analysis Features: Plane Multi-Point Constraint, Section Print Feature, Local Coordinate System
- Mechanical Boundary Conditions and Loads: Fixed Boundary Condition, Rigid Body Constraint, Displacement Boundary Condition, Contact Constraint, Tie Constraint, Spring Boundary Condition, Force Load, Pressure Load, Centrifugal Load, Gravity Load
- Thermal Boundary Conditions and Loads: Initial Temperature, Heat Flux Load, Temperature Boundary Condition, Body Heat Source
- Overwrite Constants: Constant Vacuum Permittivity
- Mesh: Mesh From Shape by Netgen, Mesh From Shape by Gmsh, Mesh Boundary Layer, Mesh Refinement, Mesh Group, Erase Elements, FEM Mesh to Mesh
- Solve: Solver CalculiX, Solver Elmer, Solver Mystran, Solver Z88; Mechanical Equations: Elasticity Equation, Deformation Equation; Electromagnetic Equations: Electrostatic Equation, Electricforce Equation, Magnetodynamic Equation, Magnetodynamic 2D Equation, Static Current Equation; Flow Equation, Flux Equation, Heat Equation, Solver Job Control, Run Solver
- Results: Purge Results, Show Result, Apply Changes to Pipeline, Post Pipeline From Result, Pipeline Branch, Warp Filter, Scalar Clip Filter, Function Cut Filter, Region Clip Filter, Contours Filter, Glyph Filter, Line Clip Filter, Stress Linearization Plot, Data at Point Clip Filter, Calculator Filter; Filter Functions: Plane, Sphere, Cylinder, Box; Data Visualizations: Create Lineplot, Create Histogram, Create Table
- Utilities: Clipping Plane on Face, Remove All Clipping Planes, FEM Examples; Clear FEM Mesh, Display Mesh Info
- Additional: Preferences; FEM Install, FEM Mesh, FEM Solver, FEM CalculiX, FEM Concrete; FEM Element Types
- 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