Proiect MEF (Metoda Elementului Finit)

Acesta este planul proiectului pentru integrarea MEF FreeCAD ca parte a foii de parcurs Development roadmap.

Unități de măsură

Units

Length	Time	Mass	Force	Pressure	Velocity	Density	Energy	Gravity
m	s	kg	kg m/s2	N/m2	m/s	kg/m3	kgm2/s2	9.81
m	s	kg	N	Pa	m/s	m kg/l	J	9.81
m	s	g	mN	mPa	m/s	micro kg/l	mJ	9.81
m	s	Mg (ton)	kN	kPa	m/s	kg/l	kJ	9.81
m	ms	kg	MN	MPa	km/s	m kg/l	MJ	9.81e-6
m	ms	g	kN	kPa	km/s	micro kg/l	kJ	9.81e-6
m	ms	Mg (ton)	GN	GPa	km/s	kg/l	GJ	9.81e-6
mm	s	kg	mN	kPa	mm/s	M kg/l	micro J	9.81e+3
mm	s	g	micro N	Pa	mm/s	g/mm3	nJ	9.81e+3
mm	s	Mg (ton)	N	MPa	mm/s	Mg/mm3	mJ	9.81e+3
mm	ms	kg	kN	GPa	m/s	M	kg/l J	9.81e-3
mm	ms	g	N	MPa	m/s	k kg/l	mJ	9.81e-3
mm	ms	Mg (ton)	MN	TPa	m/s	G kg/l	kJ	9.81e-3
cm	ms	g	daN	10^5 Pa (bar)	dam/s	kg/l	dJ	9.81e-4
cm	ms	kg	10^4 N (kdaN)	10^8 Pa (kbar)	dam/s	k kg/l	hJ	9.81e-4
cm	ms	Mg (ton) 10^7	N(MdaN)	10^11 Pa (Mbar)	dam/s	M kg/l	10^5 J	9.81e-4

Brainstorming

Potențialul ochiurilor de Plasă

Câteva administratori de ochiuri de plasă:

• Netgen administrator de plase foarte bun, cu bibliotecă suport LGPL
• Salome pachet complicat, e așa greu pentru a obține codul de care avem nevoie!?
• PythonOCC Biblioteca Python, care oferă și o interfață (în prezent) aproximativ ca Code-Aster, ar fi o modalitate rapidă și ușoară de a obține o primă soluție de lucru.

Rezolvitori Potențial

unii solver sunt

• Calculix software open source, program tridimensional, structurat pe metoda elementuluir finit (MEF)
• Code-Aster un solver scris preponderent în Python
• PythonOCC arhitectură python, care oferă, de asemenea, o interfață (în prezent) aproximativ ca Code_Aster, care ar fi, de asemenea, o cale simplă și rapidă către o primă soluție de lucru

FEM

• FEM Analysis

• Materials: Solid, Fluid, Nonlinear mechanical; Material editor

• Element geometry: Beam (1D), Beam rotation (1D), Shell (2D), Fluid flow (1D)

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Constraints

• Electrostatic: Potential

• Fluid: Initial velocity, Fluid boundary, Flow velocity

• Mechanical: Fixed, Displacement, Plane rotation, Contact, Transform, Force, Pressure, Self weight, Bearing, Gear, Pulley

• Thermal: Initial temperature, Heat flux, Temperature, Heat source

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• Mesh: Mesh Netgen, Mesh GMSH, Mesh boundary layer, Mesh region, Mesh group, Nodes set, Mesh to mesh

• Solve: Calculix tools, CalculiX, Elmer, Z88; Equations: Heat, Elasticity, Electrostatic, Flux, Flow; 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, Line clip filter, Stress linearization plot, Data at point clip filter, Create functions

• Utilities: Clipping plane, Remove clipping planes; Mesh clear, Mesh display info

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• Additional: Preferences; FEM Install, FEM Mesh, FEM Solver, FEM CalculiX, FEM Project, FEM Concrete; FEM Element Types

User documentation

• Getting started
• Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
• Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate

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• Help: Tutorials, Video tutorials
• Workbenches: Std Base, Arch, Draft, FEM, Image, Inspection, Mesh, OpenSCAD, Part, PartDesign, Path, Points, Raytracing, Reverse Engineering, Sketcher, Spreadsheet, Start, Surface, TechDraw, Test Framework, Web
• Deprecated or unmaintained workbenches: Complete, Drawing, Robot

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• Addons: Addon Manager, External workbenches, Scripting and macros

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• Hubs: User hub, Power users hub, Developer hub