GTS Advanced Webinar Presentation Part 2

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MIDAS Information Technology Co., Ltd. [1/30]

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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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



Model > Boundary > Supports

Supports

Supports



Ground Supports

Model > Boundary > Ground Supports

Ground Supports



Nodal head/ flux

Model > Boundary > Nodal Head

Head & Flux

Model > Boundary > Nodal Flux



Seepage Face/Flux

Model > Boundary > Seepage Face

Seepage Face& Flux

Model > Boundary >Seepage Flux



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.



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



Slip surfaces

Model > Boundary > Slip surface(Circular/Polygon)

Slip surface



Change element attribute/for cs

Hardening of soil or other change in attributes can be accounted



How to apply the Loads?



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



Self weight

Independent load condition based on the body force.



Nodal /moment loads

Model > Loads > Nodal force

Nodal Force

Model > Loads > Moment

Moment



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


GTS
http://en.midasuser.com/http://en.midasuser.com/

Documents

GTS Advanced Webinar Presentation Part 2