Download - Introductory Training in Midas GTS NX
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Integrated Solver Optimized for the next generation 64-bit platform
Finite Element Solutions for Geotechnical Engineering
GTS NX Basic Training
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Integrated Solver Optimized for the next generation 64-bit platform
Finite Element Solutions for Geotechnical Engineering
Geometrical Modeling inmidas GTS NX
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Objectives
Element definition
Geometry Commands
Meshing Commands
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Integrated Solver Optimized for the next generation 64-bit platform
Finite Element Solutions for Geotechnical Engineering
Training Course
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Pointand Curve
Surface and Solid
BooleanDivide
ProtudeTransform
Sub Shape
Remove
Tools
SelectionFilter
WorkTree
Properties
Output Window
Units
Views
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drawing methods (button)
coordinate/value input
selected
wait forselection
preview
value input
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select/unselect
selection method
selection filter
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Dividing ToolsA Selected Surface divides the selected solids.Selected Tool SurfaceSelect a Tool Surface (Datum Plane, Shell, Face), which will divide the solids. If the ToolSurface consists of multiple Faces, user must combine them together and select here asa single Shell.3-Pt Plane3-Pt Plane defines an infinite plane, which will divide the selected solids. Thecoordinates of the 3 points may be specified using Snap.Divide Touching Faces of NeighborsWhen a number of solids exist in a compound and only selective solids need to bedivided, the neighboring solids to the selected solids will be divided at thecorresponding face as well. This is intended to ensure the connectivity of mesh at
thecorresponding faces.Delete Original Shape(s)This option deletes Source Shape leaving the shapes subsequent to a division operation.Delete Tool Shape(s)This option deletes Tool Surface leaving the shapes subsequent to a division operation.
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Select Master Object
Select an object Solid. Here, the Selection Filter is fixed toShape, and only Solid can be selected.Select Tool ObjectSelect a solid, which will become embedded into the objectsolid. Here, the Selection Filter is fixed to Shape, and onlySolid can be selected.Delete Original Shape(s)
Delete the Original Shapes of Master Object and leave onlythe shape subsequent to an Embed operation.
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Integrated Solver Optimized for the next generation 64-bit platform
Finite Element Solutions for Geotechnical Engineering
Meshing in midas GTS NX
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Integrated Solver Optimized for the next generation 64-bit platform
Finite Element Solutions for Geotechnical Engineering
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Geometry > Protrude > Extrude
(Profile: 3 top Edges of Left Bottom)
Filter: EDGE
8 Extrude a new edge to further shape of the tunnel exit
9 Geometry > Divide > SolidSolid divided in 2 halves
Top and bottom halves
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Geometry > Protrude > Extrude
(Profile: 4 tunnel surfaces)
Filter: FACE
11 Extrude the 2D tunnel profiles to create the tunnel tubes
Target Objects: 4 tunnel
surfaces from works tree
Y - Axis
Geometry > Divide > Solid(Target Solids: 1 ground, 2 Exits)
Tools: 42 tunnel tubes surfaces
Select the 4 tunnel solid extrusions to get all
the 42 surfaces
12 Divide the 2 exits and ground by the 4 tunneltubes
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Move work plane to create 2D rectangle14
Geometry > Move Work Plane > Three
Point Reference
- Select 3 corner points on the back face of
the ground
Point 1
Point 3Point 2
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Method: Copy
Distance: -10
Times: 5
15 Geometry > Point & Curve > Rectangle
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Y - Axis
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17 Geometry > Divide > Solid
Target Solids : 4 tunnel tube solids
Tools: 6 rectangle surfaces
Divide touching faces: ground
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18 Tools > Geometry > Random Color
19 Mesh > Size Control > Edge > Interval Length
Mesh > Size Control > Edge > Linear Grading
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20 Mesh > Material > Create > Isotropic
Material 1: Concrete
-Model Type : Elastic
Material 2: Ground
-Model Type : Mohr - Coulomb
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21 Mesh > Property > Create > 3D
Name: Concrete
-Material : Concrete
Name: Ground
-Material : Ground
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22 Mesh > Generate > 3D > Auto-Solid
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23Mesh > Element > Parameters > 3D
Change the material property for the 2 exit structures
- Select both mesh sets from the works tree
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24 Works Tree > Model > Properties
Change the name of the mesh sets for the 2 exits and the ground.
Double click on mesh set and in property window assign names
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25 Static / Slope Analysis > Load > Self Weight
Define Gravity in the Negative Z direction
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26 Static / Slope Analysis > Boundary > Constraint > Auto
Apply Auto boundary conditions
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27 Analysis > Analysis Case > General
Name: Linear Static
Solution Type : Linear Static
- Press >> to activate all sets
- Click Apply
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28 Analysis > Analysis Case > General
Name: Linear Static After Excavation
Solution Type : Linear Static
- Drag and drop the mesh sets to only have the ground and tunnel exits active
Press Output Control
-Activate Strain Results
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29 Analysis > Analysis > Perform
Select both Cases and click OK
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32 Works Tree > Results
Click on Linear Static After Excavation > Solid Strains > EMax Shear
-This activates the maximum shear strains
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Thank you