FEM ElementGeometry2D/it
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| Posizione nel menu |
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| Model → Spessore di una lastra |
| Ambiente |
| FEM |
| Avvio veloce |
| C S |
| Introdotto nella versione |
| - |
| Vedere anche |
| FEM tutorial |
Descrizione
Spessore di una lastra viene utilizzato per definire lo spessore degli elementi FEM 2D, tutti o posizionati sulla superficie scelta.
2D mesh (on the left) and its expansion to solid elements done internally by CalculiX based on the specified thickness (on the right)
Utilizzo
- Premere il pulsante
Spessore di una lastra, o premere i tasti C e poi S. - Definire un parametro di spessore.
- Opzionalmente, fare clic su
Aggiunginel pannello Azioni e poi fare clic sull'icona. Se la selezione della faccia è libera, tutte le facce rimanenti (lo spessore non definito da altri oggetti Spessore di una lastra) vengono assegnate automaticamente.
Limitazioni
- L'analisi combinata di elementi di shell con elementi solidi o bordi non è supportata nella versione corrente (FreeCAD 0.18).
Proprietà
DatiThickness: specifica lo spessore della shell.
Offset examples on square plates (view from the side). Each blue line represents the actual geometry for which a 2D shell mesh is generated. The surface mesh is internally expanded to solid elements (green rectangles) by the solver. Offset direction depends on the sign of the specified offset value o and on the surface normal n. Normals in the bottom row were inverted. The offset is measured from the midsurface of the expanded mesh (red dashed line) to the surface of the geometry and 2D mesh (blue solid line) - in this direction indicated by the pink arrows. Thus, as explained above, it follows the normal direction when the offset value is positive and opposes it when the offset value is negative.
Note
Per visualizzare i risultati dal risolutore CalculiX sulla mesh espansa allo spessore prescritto, la proprietà Beam Shell Result Output 3D in FEM SolverCalculixCcxtools deve essere impostata su True.
FEM
- 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
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