Advanced Webinar. Date: December 8, 2011 Topic: General Use of midas GTS (Part I) Presenter: Abid Ali, Geotechnical Engineer

Transcription

1 midas GTS Advanced Webinar Date: December 8, 2011 Topic: General Use of midas GTS (Part I) Presenter: Abid Ali, Geotechnical Engineer Bridging Your Innovations to Realities

2 Contents: 1. Introduction 2. Geometry Modeling 3. Meshing 4. Property Bridging Your Innovations to Realities GTS

3 About GTS Convenience 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 Rapidity Accuracy Productivity GTS!

4 Introducing Frame Work Work Window Works Tree Window Task Pane Window Table Window Property 4 Window Output Window

5 Introducing Frame Work Standard Toolbar Main Menu SelectionToolbar Tabbed Toolbar WorkPlaneToolbar Snap Toolbar View Toolbar Measure Toolbar Unit System

6 Geometry Modeling

7 Types of Geometry Shape Explode Point Points on 2D or 3D Curve Edge & Curve connecting 2 Points Surface Face & Shell Solid 3D element defined with Volume Compound Group of listed elements Generation

8 Types of Geometry Shape Point Points on 2D or 3D, The Basic Entity of all Shapes Curve Surface Solid + + Imprinted Point Generated Node in Imprinted Shape

9 Types of Geometry Shape Curve Edge: Line connecting 2 Points Wire: Group of Continuous Edges Face : Surface enclosed by edges/wire Solid : Enclosed by faces, has volume Face Solid Edges (Edge or Curve) Wire (Group of Edge)

10 Surface Modeling Co-planar Curves Vertex Cloud Plane Patch Virtual Grid (M X N) Grid Patch Elevation Vertex Patch 2~4 Curves Arbitrary Curves Coons Patch NURBS Patch

11 Creating Point Line Surface Solid Solid Geometry > Primitive Feature > Cylinder, Cone, Box, Wedge, Sphere, Torus Cylinder Cone Box Wedge Sphere Torus

12 Solid Modeling Boolean Operation Trim A Divide + B Divide by Multiple Surfaces (Excavation Stages) Fuse (A B) Cut (A - B) Common (A B)

13 Types of Geometry Shape Sub Shape Lower Ranked Shapes building up the Independent Shape Shape 1 Solid Empty Sub Point Sub Edge Sub Wire Sub Face Sub Shell

14 Types of Geometry Shape Co-Shape Same shapes existing on the same location. Check Duplicate 2 Faces Co-Edge 2 Solids Check Duplicate Co-Face

15 Advanced Geometry Work (Curve, Surface) Merge Edge Geometry > Curve > Merge... Merges 2 or more edges Sub Point No Sub Point Merge Sub Point Sub Point Sub Point Sub Point 2 Edges 1 Edge

16 Advanced Geometry Work (Curve, Surface) Make Wire Geometry > Curve > Make Wire... Groups Edges to a Wire. 4 Sub Points Make Wire 3 Edges 1 Wire 3 Sub Edges

17 Advanced Geometry Work (Solid) Trim Solid Geometry > Solid > Trim... Divides Solid by Surface, and Removes the divided Solid of Reference Point. Reference Point Trim Surface Trim Solid

18 Advanced Geometry Work (Solid) Divide Solid Geometry > Solid > Divide..., Divides Solid by Surface Tool Surface Divide 1 Solid (Solid to Divide) 2 Solids

19 Advanced Geometry Work (Solid) Embed Geometry > Solid > Embed... Embeds Solid into another. Tool Object 2 Solid Master Object Embed

20 Various Geometry Tools Extrude Geometry > Generator Feature > Extrude... Extracts a shape in a direction Z-Direction Extrude Wire Solid

21 Various Geometry Tools Revolve Geometry > Generator Feature > Revolve... Rotates the Revolution Profile to create Solid, Shell or Face Revolution Axis (Z-Direction) Revolve Profile Revolve Solid

22 Various Geometry Tools Loft Geometry > Generator Feature > Loft... Creates Shell or Solid by connecting the given series of Profiles. Loft 2 Profile(Wire) Solid

23 Various Geometry Tools Sweep Geometry > Generator Feature > Sweep... Extracts selected Profile followed by the Guide Line, and creates Face, Shell or Solid Guide Line Sweep Profile Sweep Solid

24 Various Geometry Tools Modifier Features Modification Profiles Local Prism Trim 2 Surfaces Through-all Offset Defined Depth Draft Chamfer Side View

25 Various Geometry Tools Translate Geometry > Transform > Translate... Translates or Duplicates Elements in a Direction Y-Direction Face Translate (Uniform Copy) Uniform Copy

26 Various Geometry Tools Rotate Geometry > Transform > Rotate... Rotates a Shape by the Rotate Axis Rotate Axis 90 Rotate Face Rotate Move

27 Various Geometry Tools Mirror Geometry > Transform > Mirror... Translates Shape by the Mirror Plane Mirror Shape Target Object Solid Mirror Mirror Plane (Y-Z Plane)

28 Various Geometry Tools Scale Geometry > Transform > Scale... Changes the size of the selected shape Face Scale Scale Center Point

29 Check Duplicate Check Duplicate Geometry > Check > Duplicate... checks duplicated shapes. Co-Face Node Connect Co-Face Node Connect Not Node Connect Not Co-Face

30 TGM (Terrain Geometry Maker) Digital Map GTS DXF Data TGM Specialized Module for Real Terrain Geometry

31 Data Exchange Import (Geometry) IGES Geometry Export (Geometry) STEP, IGES, BREP, Neutral Format File Generated Mesh 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

32 Frame Solid Wizard from CIVIL / Gen Generated Solid Geometry MCS Format GTS Analysis Model (3D Prism Mesh) Frame Solid Wizard automatically generates Solid Geometry & Mesh by importing Frame Model (*.MCS) from Civil and Gen.

33 Meshing

34 Mesh Generation Auto Map Protrude Manipulation Solid Surface Edge Planar Area 4-Curve Area 2D 3D Type Quadrilateral Combined Triangle Solid Surface k-curve Area k-face Volume 4-Node Area Extrude Revolve Project Fill Sweep Object Geometry Element Node Create Extract Connection Change Para. Smooth Divide Check Quality Merge Transform

35 Automatic Surface Meshing Regularity Uniformity Boundary Sensitive Orientation Insensitive Sizing Control (< 1/2) Internal Curve/Point Loop Mesher Delaunay Mesher Grid Mesher Impulsive Point Loop Mesher Grid Mesher Delaunay Mesher

36 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

37 Mapped Mesh Generation GTS Map Mesher generates structured (regular & orthogonal) mesh both in surfaces and solids. Tunnel Lining (Surface Mesh) k-sided Area (Simply-connected) k-faced Volume (Simply-closed) Tunnel - Junction (Solid Mesh) Abutment (Solid Mesh)

38 Size Control GTS provides various size control methods, uniform size, division, linear grading (size & ratio and symmetry option) and refinement option. Uniform Size Division Fine Mesh Coarse Mesh Smooth Transition Linear Grading Linear & Symmetric Seeding Coarse Fine Coarse Refinement (50%) Normal Refinement (120%)

39 Mesh Size Control Along Edge Mesh > Size Control > Along Edge... Mesh Size Control for Edge or Sub-Edge Along Edge Select Edges Size Control

40 Mesh Size Control Custom Size Along Edge Mesh > Size Control > Custom Size Along Edge... Seeding on the Selected Edge by Inputting the Points to be Seeded. Custom Size Along Edge Select Edge Table Input Input Points

41 Mesh Size Control Match Edge Seed Mesh > Size Control > Match Edge Seed... duplicates the seeding information to the other edge Source Edge Generated Seeds Match Edge Seed Target Edge

42 Auto Mesh vs Map Mesh Generation Map Mesh K-Edge Area Mesh > Map Mesh > K-Edge Area... Creates 2D Mapped Mesh on the selected Area Map Mesh Curve Mapped Mesh

43 Protrude Mesh Extrude 2D Mesh Extrude Mesh(3D) Fill Edges Fill Mesh(2D)

44 Protrude Mesh Revolve 2D Mesh Revolve Mesh(3D) Sweep 2D Mesh & Guide Line Sweep Mesh(3D)

45 Protrude Mesh Project 2D Mesh Project Mesh(3D) 2D Mesh Offset Offset Mesh(3D)

46 Various Meshing Tools Merge Mesh Set Context Menu Groups elements in sets. Mesh Set 1 Mesh Set 1 Mesh Set 2 Mesh Set 3 Mesh Set 2 Mesh Set 3 Select 2 Mesh Set 3 Mesh Set Merge Mesh Set Drag & Drop

47 Various Meshing Tools Merge Node Mesh > Node > Merge... Merges 2 or more nodes into one. [Selected Node] Merge Node [2 Nodes] Node to Move Node to Retain Merge Node

48 Various Meshing Tools Extract Element Mesh > Element > Extract Element... Extracts elements from higher dimension shape. [From Shape] 3D Element [From Node] Hide Mesh & Select Sub Faces 2D Element 3D Element Select Nodes 2D Element

49 Various Meshing Tools Mirror Mesh > Transform > Mirror... Translates mesh by the Mirror Plane Original Mesh Mirror Preview Mirror Mesh

50 Various Meshing Tools Scale Mesh > Transform > Scale... Changes the size of the selected element. Original Mesh Scale Preview

51 Process of GTS Modeling Geometry Modeling Modeling Process Tools 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

52 Process of GTS Modeling Mesh Modeling Modeling Process Tools Create Section Polyline, Line, Import DXF Etc. Generate 2D Mesh Auto Mesh Planar Area, K-Edge Area, Auto Mesh Face Etc. Extract 3D Mesh Extrude, Fill, Sweep, Project, Offset, Revolve Etc. Transform Mirror, Translate, Rotate Etc.

53 Check Mesh Check Mesh 2D Mesh > Check Mesh... Checks if the meshes are well generated. Checks if the nodes are well connected. Check Mesh OK NG

54 Check Mesh Check Mesh 3D Mesh > Check Mesh... Checks if the meshes are well generated. Checks if the nodes are well connected. Check Mesh OK NG

55 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 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 Sectional properties

56 Attributes

57 Material Models Provided by GTS Structural Constitutive models. Non linear Elastic model for truss and emb edded 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 Controls the stress-strain softening of relationship. the soil. Simulate clay, mainly in consolidation analysis. Brittle Simulates failure the of behaviour rocks. of stratified and jointed rock Failure masses. of a jointed rock mass in response to induced stresses. Elastic Hardening and behaviour Plastic anisotropic of soil. behaviour.

58 Thank You! For more information, please visit us at Bridging Your Innovations to Realities GTS