Advanced Webinar - Midasadmin.midasuser.com/UploadFiles2/webinar/20120403_GTS... · 2012-03-21 ·...

Bridging Your Innovations to Realities

Date: April 3, 2012

Topic: General Use of midas GTS (Part I)

Presenter: Vipul Kumar

midas GTS Advanced Webinar

GTS


1. Introduction

2. Geometry Modeling

3. Meshing

4. Property

Contents:

GTS

MIDAS Information Technology Co., Ltd.

Convenience

Rapidity

Accuracy

Productivity GTS !

“GTS is a total, state-of-the-art solution, which has been developed through integrating all the functions, which are required for structural analysis of geotechnical and tunnel

engineering. Its capabilities include stress analysis reflecting

construction stages, seepage analysis and much more …”

About GTS


Introducing Frame Work

4 Property

Window

Task Pane

Window

Output Window

Works Tree

Window

Work Window

Table

Window


Main Menu

SelectionToolbar WorkPlaneToolbar

Snap Toolbar

Tabbed Toolbar

View Toolbar

Measure Toolbar

Unit System

Standard Toolbar

Introducing Frame Work


Geometry Modeling


Curve Edge & Curve connecting 2 Points

Surface Face & Shell

Solid 3D element defined with Volume

Compound Group of listed elements

Types of Geometry Shape

Point Points on 2D or 3D

Explode

Generation


Point


+

+

+ +

+ + +

+

+

+

+

+

+

+

Imprinted Point Generated Node

in Imprinted Shape

Curve Surface Solid

Points on 2D or 3D,

The Basic Entity of all Shapes


Edge: Line connecting 2 Points

Wire: Group of Continuous Edges

Face : Surface enclosed by edges/wire

Solid : Enclosed by faces, has volume

Curve


Edges (Edge or Curve)

Wire (Group of Edge)

Face Solid


Surface Modeling

Virtual Grid

(M X N)

Elevation

Grid Patch

Co-planar Curves

Plane Patch

Vertex Cloud

Vertex Patch

NURBS Patch

Arbitrary Curves

2~4 Curves

Coons Patch


Box

Sphere

Cylinder

Torus

Cone

Wedge

Creating Point • Line • Surface • Solid

Geometry > Primitive Feature > Cylinder, Cone, Box, Wedge, Sphere, Torus

Solid


Solid Modeling

Trim

Divide

Boolean Operation

A

B

Fuse (A B)

Cut (A - B)

Common (A B)

+

Divide by Multiple Surfaces (Excavation Stages)



Sub Shape Lower Ranked Shapes building up the Independent Shape

Shape

Sub Point

Sub Edge

Sub Wire

Sub Face

Sub Shell

8

12

6

6

1

1 Solid

Empty



Co-Shape Same shapes existing on the same location.

2 Faces Co-Edge Check Duplicate

Check Duplicate

Co-Face 2 Solids


Merge

2 Edges 1 Edge

Advanced Geometry Work (Curve, Surface)

Merges 2 or more edges

Geometry > Curve > Merge...

Merge Edge

Sub Point Sub Point

Sub Point No Sub Point

Sub Point Sub Point


Make Wire

1 Wire

3 Sub Edges

3 Edges

4 Sub Points

Advanced Geometry Work (Curve, Surface)

Groups Edges to a Wire.

Geometry > Curve > Make Wire...

Make Wire


Trim Solid

Reference Point

Trim Surface

Advanced Geometry Work (Solid)

Divides Solid by Surface,

and Removes the divided Solid of Reference Point.

Geometry > Solid > Trim...

Trim Solid


1 Solid

(Solid to Divide)

Tool Surface

2 Solids


Divides Solid by Surface

Geometry > Solid > Divide...,

Divide Solid

Divide


2 Solid

Tool Object

Master Object

Embed


Embeds Solid into another.

Geometry > Solid > Embed...

Embed


Various Geometry Tools

Solid Wire

Z-Direction

Extrude

Extracts a shape in a direction

Geometry > Generator Feature > Extrude...

Extrude


Profile

Revolution Axis

(Z-Direction)

Revolve Solid

Revolve

Rotates the Revolution Profile to create Solid, Shell or Face

Geometry > Generator Feature > Revolve...

Revolve



2 Profile(Wire) Solid

Loft

Creates Shell or Solid by connecting the given series of Profiles.

Geometry > Generator Feature > Loft...

Loft



Sweep

Profile

Guide Line

Sweep Solid

Extracts selected Profile followed by the Guide Line,

and creates Face, Shell or Solid Geometry > Generator Feature > Sweep...

Sweep



Modification

Trim 2 Surfaces

Offset

Local Prism Profiles

Defined Depth

Through-all

Draft

Side View

Chamfer


Modifier Features


Face

Y-Direction

Translate

(Uniform Copy)

Translates or Duplicates Elements in a Direction

Geometry > Transform > Translate...

Translate

Uniform Copy



Face

90°

Rotate Axis

Rotate

Rotates a Shape by the Rotate Axis

Geometry > Transform > Rotate...

Rotate

Rotate Move



Solid Mirror Plane

(Y-Z Plane)

Mirror Shape

Target Object

Mirror

Translates Shape by the Mirror Plane

Geometry > Transform > Mirror...

Mirror



Face

Scale Center Point

Scale

Changes the size of the selected shape

Geometry > Transform > Scale...

Scale



Node Connect

Not Co-Face

Co-Face

Co-Face

Not Node Connect

Node Connect

checks duplicated shapes.

Geometry > Check > Duplicate...

Check Duplicate

Check Duplicate


TGM (Terrain Geometry Maker)

Specialized Module for Real Terrain Geometry

DXF Data TGM

GTS Digital Map


Data Exchange

Import (Geometry)

Export (Geometry)

• STEP, IGES, BREP, Neutral Format File

Standards for Data Exchange • STEP (STandard for the Exchange of Product Model Data)

• IGES (Initial Graphics Exchange Specification)

• STL (STereo Lithography) – De facto standard for RP

IGES Geometry

Generated Mesh


GTS

FrameSolid Wizard automatically generates

Solid Geometry & Mesh by importing Frame Model

(*.MCS) from Civil and Gen.

MCS Format

Analysis Model

(3D Prism Mesh)

Generated Solid

Geometry

Frame Solid Wizard from CIVIL / Gen


Meshing


Mesh Generation

Auto Map Protrude Manipulation

• Solid

• Surface

• Edge

• Planar Area

• 4-Curve Area

• 2D 3D

• Quadrilateral

• Combined

• Triangle

• Solid

• Surface

• k-Curve Area

• k-Face Volume

• 4-Node Area

…

• Extrude

• Revolve

• Project

• Fill

• Sweep

• Geometry

• Element

• Node

• Create

• Extract

• Connection

• Change Para.

• Smooth

• Divide

• Check

• Quality

• Merge

• Transform

…

Object

Type


Automatic Surface Meshing

Regularity

Uniformity

Boundary Sensitive

Orientation Insensitive

Sizing Control

(< 1/2)

Internal Curve/Point

Loop Mesher ✓ ✓ ✓ ✓

Delaunay Mesher ✓ ✓ ✓ ✓

Grid Mesher ✓ ✓ ✓

Loop Mesher Grid Mesher Delaunay Mesher

Impulsive Point


Automatic Solid Meshing

• GTS’ Tetra Mesher auto-generates tetrahedral solid mesh with variable sizes in

smooth transition. (200,000 Tetra’s/min)

• GTS’ Tetra Mesher is capable of including holes, curves and points that are present

in/on solids.

Smooth Transition

Smooth

Transition


Mapped Mesh Generation

• GTS’ Map Mesher generates structured (regular & orthogonal) mesh both in surfaces

and solids.

k-faced Volume

(Simply-closed)

k-sided Area (Simply-connected)

Abutment

(Solid Mesh) Tunnel - Junction

(Solid Mesh)

Tunnel Lining

(Surface Mesh)


Size Control

• GTS provides various size control methods, uniform size, division, linear grading (size

& ratio and symmetry option) and refinement option.

Linear & Symmetric Seeding

Fine Coarse Coarse

Division Uniform

Size

Lin

ea

r Gra

din

g

Fine Mesh

Coarse Mesh

Smooth Transition

Normal Refinement (50%) Refinement (120%)


Mesh Size Control

Along Edge Mesh Size Control for Edge or Sub-Edge

Along Edge

Select Edges Size Control

Mesh > Size Control > Along Edge...


Mesh Size Control

Custom Size Along Edge

Seeding on the Selected Edge by Inputting the Points to be Seeded.

Input Points

Custom Size

Along Edge

Table Input Select Edge

Mesh > Size Control > Custom Size Along Edge...


Mesh Size Control

Match Edge Seed duplicates the seeding information to the other edge

Generated Seeds

Source Edge

Target Edge

Match Edge Seed

Mesh > Size Control > Match Edge Seed...


Auto Mesh vs Map Mesh Generation

Map Mesh K-Edge Area Creates 2D Mapped Mesh on

the selected Area

Map Mesh

Mapped Mesh Curve

Mesh > Map Mesh > K-Edge Area...


Extrude

Fill

Protrude Mesh

2D Mesh Extrude Mesh(3D)

Edges Fill Mesh(2D)


Revolve

Sweep

2D Mesh Revolve Mesh(3D)

2D Mesh & Guide

Line

Sweep Mesh(3D)

Protrude Mesh


Project

Offset

2D Mesh Project Mesh(3D)

2D Mesh

Offset Mesh(3D)

Protrude Mesh


Various Meshing Tools

Merge Mesh Set

Groups elements in sets.

Mesh Set 1

Mesh Set 2 Mesh Set 3

Mesh Set 1

Mesh Set 2 Mesh Set 3

Select

2 Mesh Set

Merge Mesh Set Context Menu

3 Mesh Set

Drag

&

Drop


Mesh > Node > Merge...


Merge Node Merges 2 or more nodes into one.

[Selected Node]

[2 Nodes]

Node to Move

Node to Retain

Merge Node

Merge Node


Mesh > Element > Extract Element...


Extract Element Extracts elements from higher dimension shape.

[From Shape]

2D Element 3D Element

2D Element Select Nodes 3D Element

[From Node]

Hide Mesh &

Select Sub Faces


Mesh > Transform > Mirror...


Mirror

Mirror Mesh

Original Mesh Mirror Preview

Translates mesh by the Mirror Plane



Scale Changes the size of the selected element.

Scale Preview Original Mesh

Mesh > Transform > Scale...


Create Section Polyline, Line, Import DXF

etc.

Create Solid Extrude, Loft, Sweep, Etc.

Modify Solid Boolean Operation, Embed, Divide Etc.

Size Control Along Edge, Match Edge Seed, Custom

Edge

Generate Mesh Auto Mesh Solid, Map Mesh Solid, K-Edge area Etc

Process of GTS Modeling

Geometry Modeling

Tools Modeling Process


Transform

Extract 3D Mesh

Generate 2D Mesh

Create Section Polyline, Line, Import DXF Etc.

Auto Mesh Planar Area, K-Edge Area, Auto Mesh Face

Etc.

Extrude, Fill, Sweep, Project, Offset, Revolve Etc.

Mirror, Translate, Rotate Etc.

Mesh Modeling

Process of GTS Modeling

Tools Modeling Process


Check Mesh

Check Mesh 2D Checks if the meshes are well generated.

Checks if the nodes are well connected.

NG OK

Check Mesh

Mesh > Check Mesh...


Check Mesh

Check Mesh 3D Checks if the meshes are well generated.

Checks if the nodes are well connected.

NG

Check Mesh

OK

Mesh > Check Mesh...


• Soil Elements • Solid Element

• Plane Strain element

• Axisymmetric Element

• Structural Elements • Truss Element

• Embedded Truss Element

• Beam Element

• Plate Element

• Plane Stress Element

• Application Elements • Interface Elements

• Plate interface elements

• Pile element

• Pile tip bearing element

• Geogrid element

• Elastic link

• Rigid Link

• Spring

• Matrix spring

Element Type Provided by GTS

Line Type Truss / Embedded Truss

Beam

Tension Only (Hook), Compression

Only (Gap)

Plot Only (Dummy for Modeling)

Geogrid(1D)

Plane Type Plate (Shotcrete, Lining)

Plane Stress

Plane Strain

Axisymmetry

Geogrid(2D)

Plot Only (Dummy for Modeling)

Solid Type Solid

Others Point Spring, Matrix Spring, Interface

Elastic Link, Rigid Link

Line-to-solid interface for pile

•Sectional properties


Attributes


Material Models Provided by GTS

Structural Constitutive models. Non linear Elastic model for truss and embedded truss Non linear elastic model for elastic links Geomembrane models Interface models Plate Interface model Non linear Pile model

Geotechnical constitutive models

Linear elastic models Transversely isotopic model Tresca model Von Mises model Mohr-Coulomb model Drucker Prager model Duncan-Chang Model Strain softening model Modified cam clay model Jointed rock model Hoek Brown model Modified Mohr Coulomb Jardine model D-min model

Seepage constitutive model

Permeabilty function Volumetric water contents function

Linear Elastic constitutive model

Non Linear Elastic constitutive model

Elasto-plastic constitutive models

•Based on Couloumb’s law •Simulate the interface behaviour

•Pile and surrounding soils. •Retaining wall and soil •Lining and landfill •Jointed rocks and fault zones.

•Model cohesionless soils and undrained behaviour of ground soil. •Analysis of ductile materials. •Simulating anchors, nails, steel made pipe pile etc.

•Model granular materials such as soil and concrete.

•Simulate gravel behaviour. •Hyperbolic stress-strain relationship. •Controls the softening of the soil.

•Brittle failure of rocks. •Failure of a jointed rock mass in response to induced stresses.

•Simulate clay, mainly in consolidation analysis. •Simulates the behaviour of stratified and jointed rock masses. •Elastic and Plastic anisotropic behaviour. •Hardening behaviour of soil.


Thank You! Thank You! For more information, please visit us at

http://en.midasuser.com


GTS

http://en.midasuser.com/

Advanced Webinar - Midasadmin.midasuser.com/UploadFiles2/webinar/20120403_GTS... · 2012-03-21 ·...

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Transcript of Advanced Webinar - Midasadmin.midasuser.com/UploadFiles2/webinar/20120403_GTS... · 2012-03-21 ·...