Difference between revisions of "Contrib:KeesWouters/shell/static"
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=='''Definition of the geometry'''== | =='''Definition of the geometry'''== | ||
planar shell | planar shell | ||
| + | Geometry: <br> | ||
| + | L = 11.38 m <br> | ||
| + | Thickness = 0.55 m <br> | ||
| + | Loads: <br> | ||
| + | [type] [group] [value] <br> | ||
| + | Presure1 (Fbot) = 29.5e3 Pa <br> | ||
| + | Presure2 (Fmain)= 25.8e3 Pa <br> | ||
| + | Presure3 (Ftop) = 24.3e3 Pa <br> | ||
| + | Presure4 (Fcentre1,Fcentre2)= 182.6e3 Pa <br> | ||
| + | BC: <br> | ||
| + | Lbot (DX=0.0, DY=0.0, DZ=0.0) <br> | ||
| + | Ltop (DZ=0.0) <br> | ||
| + | Material: <br> | ||
| + | Concrete <br> | ||
| + | E = 32e9 Pa <br> | ||
| + | Nu = 0.2 <br> | ||
| + | [[Image:Geom-01-big.gif]] <br> | ||
| + | ---- | ||
| + | Create all points and lines using: [New Entity]->[Basic}->[Point] and [New Entity]->[Basic]->[Line] <br> | ||
| + | [[Image:Points%26lines.gif]] | ||
| + | ---- | ||
| + | Create one big face Ftotal <br> | ||
| + | [New Entity]->[Build]->[Face] <br> | ||
| + | Ftotal: Line7,Line6,Line8,Line12,Line11,Line10,Line9,Line1 <br> | ||
| + | [[Image:One-face.gif]] | ||
| + | ---- | ||
| + | Create three wires <br> | ||
| + | [New Entity]->[Build]->[Wire] <br> | ||
| + | Wire1: Line3,Line4,Line5 <br> | ||
| + | Wire2: Line17,Line18,Line19 <br> | ||
| + | Wire3: Line13,Line14,Line15,Line16 <br> | ||
| + | [[Image:wires.gif]] | ||
| + | ---- | ||
| + | Create vector <br> | ||
| + | [New Entity]->[Basic]->[Vector] <br> | ||
| + | (0,0,1) <br> | ||
| + | Create four extrusions <br> | ||
| + | [New Entity]->[Generation]->[Extrusion] <br> | ||
| + | Extrusion1: Wire1,vz <br> | ||
| + | Extrusion2: Wire2,vz <br> | ||
| + | Extrusion3: Wire3,vz <br> | ||
| + | Extrusion4: Line2,vz <br> | ||
| + | [[Image:Extrusions.gif]] | ||
| + | ---- | ||
| + | |||
| + | |||
===''Partitioning of the geometry''=== | ===''Partitioning of the geometry''=== | ||
why: we need groups for loads and boundary conditions<br> | why: we need groups for loads and boundary conditions<br> | ||
how: we define planes<br> | how: we define planes<br> | ||
| + | |||
| + | Create partition <br> | ||
| + | [Operations]->[Partition] <br> | ||
| + | Part_main: Ftotal,Extrusion1,Extrusion2,Extrusion3,Extrusion4 <br> | ||
| + | [[Image:Part-main.gif]] | ||
| + | |||
===''Meshing''=== | ===''Meshing''=== | ||
Revision as of 12:38, 7 March 2010
Contents
Static analysis of a shell construction
[ .... under construction .... ]
This contribution is in close cooperation with Bridge.
In this example the following items are discussed:
- preproccesing:
- definition of geometry in Salome
- partitioning of the geometry and groups
- meshing of the geometry
- definition of the groups
- (maybe: python script which makes editing much easier ...)
- static analysis with pressure or force applied on a group or nodes
- postprocessing:
- viewing displacement in Salome
- determination of stresses
- interface ASTK
Definition of the geometry
planar shell
Geometry:
L = 11.38 m
Thickness = 0.55 m
Loads:
[type] [group] [value]
Presure1 (Fbot) = 29.5e3 Pa
Presure2 (Fmain)= 25.8e3 Pa
Presure3 (Ftop) = 24.3e3 Pa
Presure4 (Fcentre1,Fcentre2)= 182.6e3 Pa
BC:
Lbot (DX=0.0, DY=0.0, DZ=0.0)
Ltop (DZ=0.0)
Material:
Concrete
E = 32e9 Pa
Nu = 0.2
Create all points and lines using: [New Entity]->[Basic}->[Point] and [New Entity]->[Basic]->[Line]
Create one big face Ftotal
[New Entity]->[Build]->[Face]
Ftotal: Line7,Line6,Line8,Line12,Line11,Line10,Line9,Line1
Create three wires
[New Entity]->[Build]->[Wire]
Wire1: Line3,Line4,Line5
Wire2: Line17,Line18,Line19
Wire3: Line13,Line14,Line15,Line16
Create vector
[New Entity]->[Basic]->[Vector]
(0,0,1)
Create four extrusions
[New Entity]->[Generation]->[Extrusion]
Extrusion1: Wire1,vz
Extrusion2: Wire2,vz
Extrusion3: Wire3,vz
Extrusion4: Line2,vz
Partitioning of the geometry
why: we need groups for loads and boundary conditions
how: we define planes
Create partition
[Operations]->[Partition]
Part_main: Ftotal,Extrusion1,Extrusion2,Extrusion3,Extrusion4
Meshing
how
tria -quad?
linear vs quadratic elements
