gts advanced webinar presentation part 2
TRANSCRIPT
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Bridging Your Innovations to Realities
midas GTSAdvanced Webinar
GTS
Date: February 16, 2012
Topic: General Use of midas GTS (Part II)
Presenter: Vipul Kumar
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Bridging Your Innovations to Realities
1. Recap
2. Boundary Conditions
3. Load Conditions
4. Analysis
5. Post-processing Results
6. Application Areas
Contents:
GTS
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Project details
Fill material in the top layer, sand in the middle and loam at the bottom.
Sheet pile embedded in the soil.(since 2-D analysis, modelled as a beamelement).
Non-linear material model(MC) to define the soil properties.
Modeling anchors using truss element.
Prestressed anchors embedded in the soil.
Recap
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Meshing
Low order triangular elements are generated through loop mesher with an
element size of 1.
Recap
Size c
ontrol
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Interface elements
How to create the interaction between
the sheet pile and the neighboring soil
Rigid links need to be created for nodes that have been splitted
above.
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Boundary conditions
How to apply the different boundary
conditions required for the project?
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Boundary Conditions
Support
Ground supports
Nodal Head/Flux
Seepage Face/Flux
Nodal Flux, Surface Flux
Seepage Boundary Function
Draining condition
Slip surface
Change element attribute Unsaturated Property Function
All boundary conditions can be applied both to FE and geometry.
Boundary Conditions
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Model > Boundary > Supports
Supports
Supports
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Ground Supports
Model > Boundary > Ground Supports
Ground Supports
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Nodal head/ flux
Model > Boundary > Nodal Head
Head & Flux
Model > Boundary > Nodal Flux
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Seepage Face/Flux
Model > Boundary > Seepage Face
Seepage Face& Flux
Model > Boundary >Seepage Flux
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Seepage Boundary function
Model > Boundary > Seepage boundary function
Seepage Boundary funct ion
Assigns Boundary conditions in terms of time.
Change of boundary conditions w.r.t time can be assigned in transient state
analysis.
Example:
Variation of water level of reservoir.
Seasonal inflow and outflow of rain.
Change of pumping rate of pump.
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Drainage condition & Non-consolidation condition
Model > Boundary > Draining condition
Draining condition
Applied in areas where excess pore
pressure is zero.
Mainly applied to consolidation analysis
and groundwater seepage analysis.
Model > Boundary > Non-consolidation condition
Non consolidation condit ion
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Slip surfaces
Model > Boundary > Slip surface(Circular/Polygon)
Slip surface
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Change element attribute/for cs
Hardening of soil or other change in attributes can be accounted
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How to apply the Loads?
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Load
Self Weight
Force, Moment
Prescribed Displacement
Pressure
Line / Element Beam Load
Nodal / Element Temperature, Temperature Gradient
Prestress
Nodal Mass
Response Spectrum Analysis Data(including Various Design Spectrum Data)
Time History Analysis Data
- Time Forcing Function (including 54 Earthquake Acceleration Records)
- Ground Acceleration
- Time Varying Static Load
- Dynamic Nodal Load, Dynamic Surface Load
- Time History Result FunctionAll loads can be applied both to FE and geometry.
Pressure on Surface Pressure on Element-Face
Transfer to FE
Load conditions
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Self weight
Independent load condition based on the body force.
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Nodal /moment loads
Model > Loads > Nodal force
Nodal Force
Model > Loads > Moment
Moment
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Prescribed displacements
Examine the structural behaviors under the conditions where displacements for therestrained DOF are known.
A rigid body motion is expected.
Detailed safety diagnosis is needed in terms of ground deformation.
When the displacements of specific part are used as the boundary conditions after the
analysis of global model is performed.
Model > Loads > Prescribed displacements
Prescribed Displacements
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Pressure load
Model > Loads > Pressure load
Pressure load
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Line/element beam load
Model > Loads > Line load
Line Load
When a series of beams are
connected continuously, just selecting
both ends of the row of beam
elements.
Model > Loads > Element beam load
Element beam Load
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Temperature load
Model > Loads > Nodal Temperature/Element Temperature/Temperature Gradient
Temperature Load
Applying an element beam load is similar to applying a nodal temperature load at the nodes connecting
the elements selected.
Temperature gradient load is only considered for beam and plate elements.
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Prestress
Model > Loads > Prestress
Prestress
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Time history Load
Model > Loads > Time history Data
Time history Load
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Model > Loads > Response Spectrum Load
Response spectrum Load
Response Spectrum Load
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Load Combination
Model > Load > Load Set
Load Set
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INDEX
GTS Analysis Case
Analysis Control
Analysis Case
Construction Stage
A l i C biliti
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Analysis Capabilities
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Analysis Case
Analysis > Analysis Case
Analysis Case
Analysis Type
Drag & Drop
Tree Structure Excavation
Initial & Embanking
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Parametric Study & Batch study
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Post processing results
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Post-processing
Works Tree
Result Table
Result Graph
MS-Excel
Contour Plot
C t Pl t T
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Contour Plot Types
Contour with Mesh Contour with Iso-line Contour with Mesh & Iso-line
Contour without Mesh Gradient Contour Gray Contour
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Contour with Deformation
Displacement Contour (Gradient Plot)
with Deformed Shape
Front View
Side View
Undeformed Model
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Iso-surface Plots
Multiple Iso-surfaces with Feature-Edge Multiple Iso-surfaces with Mesh
I f Pl t (C d)
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Iso-surface Plots (Capped)
Original Iso-surface Plot (Multiple Plots)
Capped Plot (Lower Part)
Capped Plot (Upper Part)
Base Iso-surface
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Slice Plots
Multiple Slice Planes (Solid)
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Clipping Plots
Original PlotCurved Tunnel (Slice Plot)
Clipped Plot (Lower Part)
Clipped Plot
(Upper Part)
Clipping Plane Definition by Mouse Dragging
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ClippingPlots
Original Plot
Multiple Clipping Planes
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Partition Plots
Mesh Set based Partition
Front View Side View
Original Plot Partitioned Plot
Model
(6 Mesh Sets)
Detach mesh sets by mouse dragging
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Hybrid Plots
Original Plot
Front View
Top View
Clipped Contour Plot + Vector Plot
Contour Plot
Vector Plot
Clipping Plane
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Diagram Plots
Axial Force of 2D Embedded Trusses (R/B)
Beam Force Diagram (2D Shotcrete)
Axial Force of 3D Embedded Trusses (R/B)
Beam Moment Diagram (2D Shotcrete)
V t Pl t
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Vector Plots
Vector Plot on Contour (Principal Strain)
Vector Plot without Mesh
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Animations
3D Construction Stage Analysis
(Clipped Plot)
2D Construction Stage Analysis
Click Animation to Start
R lt E t ti
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Result Extraction
Location Stage
Result
3D Step Graph3D Step Graph
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Settlement Profiles
Mesh & Displacement Contour
Settlement Profile (3D Plane, 2D Line)
Define Settlement Grids
Settlement (MS-Excel Compatible Table)
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On-Curve Diagrams
2D On-Curve Graphs on Contour Plot
Fault Zone
Result Data at User-Specified
Sampling Points3D On-Curve Graphs on Contour Plot
Front View
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Probe & Result Tag
Side View
& R
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Probe & Result Tag
Flying View Flying View
Flying View
Application Areas
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Application Areas
Application Areas
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Application Areas
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Thank You!Thank You!For more information, please visit us at
http://en.midasuser.com
Bridging Your Innovations to Realities
GTS
http://en.midasuser.com/http://en.midasuser.com/