DM-Intro 16.0 L03 Basics of DesignModeler
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Transcript of DM-Intro 16.0 L03 Basics of DesignModeler
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1 2015 ANSYS, Inc. March 2, 2015
16.0 Release
Lecture 3:
Basics of ANSYS DesignModeler
Introduction to ANSYS DesignModeler
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Overview
In this lecture we will learn about: Pre-processing Workflow using ANSYS WB tools What is ANSYS DesignModeler DesignModeler Interface Concept of Planes and Sketches Sketching Interface Sketching Toolboxes
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Preprocessing Workflow
Sketches and Planes
Geometry Import Options
3D Operations
Bi-Directional
CAD/ Neutral
Geometry Cleanup and Repair
Automatic
Cleanup
Simplification,
Mid-surface,
Fluid Extraction
Extrude, Revolve,
Sweep, etc
3D Operations
Booleans,
Decompose, etc.
Import/ Geometry Creation
Geometry Modifications
Meshing Solver
Meshing Methods
Hybrid Mesh: Tet,
Prisms, Pyramids
Hexa Dominant,
Sweep meshing
Global Mesh Settings
Local Mesh Settings
Sizing, Controls,
etc.
Assembly
Meshing
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Overview
DesignModeler is a tool For importing CAD models for pre-
processing before engineering analysis
For geometry simplification/modification and preparation for meshing
For parametric feature-based modeling
Application Fundamentals
Two basic modes of operation for geometry creation
2D Sketching
3D Modeling (Surfaces and Solids)
Dedicated tools for import & clean-up
What is DesignModeler?
Sketching Modeling
CAD Import & Clean-up
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Launching DesignModeler
From Component Systems
Eg: Geometry, Mesh
From Analysis Systems
Eg: Fluid Flow (Fluent), Fluid Flow (CFX)
ANSYS DesignModeler is launched within Workbench Double click Geometry in the System or right click and select Edit
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Toolbars
Tree Outline
Mode Tabs
Details View
Status/Info Bar
Graphics Window
Entity Details Bar Units Display Bar
DesignModeler Interface
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DesignModeler is a History based modeling tool
Tree Outline is where are being displayed the recorded sequential feature operations
Starts with three default Planes
XY, ZX & YZ
Sketches are created on Planes
Modeling Operations are listed sequentially, which can be edited/deleted
The Bodies/Parts which are created by the Modeling Operations are listed beneath them
This list of Bodies/Parts is not feature based Changes can only be made based on Feature
operations in the Tree Outline
Changes by Part Management operations such as Form a New Part
Tree Outline
Default Planes
Sequential list of Modeling
Operations
List of bodies/parts
engrsHighlight
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Working with the Details View
Feature inputs are listed in the Details View The second column contains user input
values or selections
Each input box is activated by Left Click Boxes requiring entity selection (Sketch,
Geometry etc) will display Apply/Cancel when activated
Yellow boxes indicate that input is required (numeric or selection input).
Details View
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Status/Info Bar
- Displays Status of geometry model
- Displays dynamic instructions
- Eg:
Entity Details Bar
- Displays details of entity selected in Graphics
Window or Tree Outline.
- Eg:
Units Display Bar
- Displays Unit used in
current project
Info Bars
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Toolbars can be accessed to get quick access to most commonly used features
The most commonly used toolbars are
Selection
View Controls
Display Controls
Toolbars can also be customized to Add/Remove features of users choice
Toolbars
Box Selection Options Criteria based Coloring for Diagnostics/Visualization
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Preprocessing Workflow
Sketches and Planes
Geometry Import Options
3D Operations
Bi-Directional
CAD/ Neutral
Geometry Cleanup and Repair
Automatic
Cleanup
Simplification,
Mid-surface,
Fluid Extraction
Extrude, Revolve,
Sweep, etc
3D Operations
Booleans,
Decompose, etc.
Import/ Geometry Creation
Geometry Modifications
Meshing Solver
Meshing Methods
Hybrid Mesh: Tet,
Prisms, Pyramids
Hexa Dominant,
Sweep meshing
Global Mesh Settings
Local Mesh Settings
Sizing, Controls,
etc.
Assembly
Meshing
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A plane is required to create a 2D sketch
Also required for some body operations 2D/3D geometry can be constructed using
a sketch as a base object
Steps for creating a 3D geometry (bottom-up approach)
Create or select an existing plane Create a sketch on the plane Apply a modeling operation to the sketch
Concept of Planes and Sketches
Desired plane is selected Sketch created on selected plane
3D geometry created using Extrude feature from the
sketch
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Working with Planes
At start-up, three default planes are available (XY, ZX & YZ) on which sketches can be created
New planes can be created to host sketches elsewhere
New Plane
This option can be used for creating a new plane
Suitable options for creating planes can be chosen from list of options available under Type
For example, by transforming (offset, rotate, etc.) an existing plane OR from a selected face
Optionally apply one or more transformations
Planes
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New Sketch
This option can be used to create a new sketch on active/selected plane
New sketches are placed in the Tree Outline beneath their associated plane
Sketches can be created in Sketching mode only
Selecting a Plane with no sketches and entering sketch mode automatically creates a New sketch
Multiple sketches can be created in any given plane
Clicking on Sketching mode tab will take you to the active sketch
Sketch Creation
XYPlane is active
Only sketches on active Plane are displayed in drop down
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Sketching Interface
Sketching tools are arranged in five
toolboxes - Draw, Modify, Dimensions,
Constraints and Settings
Sketching toolboxes are available when you switch to sketching mode
Details of the current sketch (Dimensions, Constraints etc) are displayed in the Details View.
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Many options are straight forward to use GUI status bar provides instructions for completing each operation Right click provides additional commands
Draw Toolbox
Open End
Closed End
Open End with Fit Points
Closed End with Fit Points
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Modify Toolbox
L1 L3
L2
L4
Fillet( L1, L2) Corner( L1, L4)
Trim( L3)
Chamfer( L2, L3)
Extend( L4, L3)
Modify Toolbox can be used to Add/Edit/Remove things in the existing sketch such as trimming sketch, adding chamfers, splitting edges, etc.
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A new sketch can be created by referencing existing geometry
Allows selected boundaries of plane to be duplicated as new sketch entities
All sketches have to be in the same plane
Modify Toolbox
Select Required Edges
Duplicate to Sketch
Create Plane From Face
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Used for defining dimensions of a sketch User can pick any specific dimensioning tool OR can use General or
Semi-Automatic
General General selects appropriate dimension type based on entity
selection
Right click provide quick access to specific dimension types
Semi-Automatic Cycles through entities until sketch is fully constrained (or) user
chooses to exit
Dimensions Toolbox
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Constraints can be applied on sketch entities for other than Dimensional restrictions
These are applied Manually
Constraints can be added or deleted manually on existing sketch entities
Automatically (Auto Constraints is ON by default)
Auto Constraints displays possible constraints on the fly while drawing sketches. Some examples:
Constraints Toolbox
Horizontal
Vertical Point Coincident
Horizontal
Vertical Horizontal
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Color Coding Indicates constraint status
Teal: Under-constrained
Blue: Well Defined
Black: Fixed
Red: Over-Constrained
Gray: Inconsistent or Unknown
Constraints Toolbox
Teal Blue
Blue
Black
Red
Warning on Over-constraining
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Ruler allows to get a quick sense of scale while sketching
Look At tool will orient the display perpendicular to a plane, sketch or selected entity normal.
Many operations become easier via a right click context menu on the graphics screen
Undo/Redo buttons are available in Sketching mode only
IMPORTANT: Each plane stores its own Undo Stack
The Back operation (available via RMB) acts like a micro undo during multi-step sketching operations (e.g. polyline)
Sketching Tips
Context Menu
Please Note: Only one sketch is active at a time!
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Sketch Instancing
Allows copies of sketches to be added in other planes
Sketch is persistent
Gets automatically updated when changes in base sketch are made
Edges are fixed
Can not be moved, edited, or deleted
Can be scaled and rotated
Can only be placed in planes lower in the tree outline than the plane with the base sketch
Sketch Projection Can be used for projecting 3D entity onto a plane to
create new sketch entities
Remain associated to input geometry
Advanced Sketching Options
Sketch projected onto existing plane
3D Geometry selected for projection
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Summary
What have we learnt in this session? What is the normal Pre-processing Workflow within ANSYS WB tools? Where is DesignModeler used in Pre-processing process? What is the concept of Planes and Sketches? How to use Sketching Mode for creating sketches? How to constrain sketches?
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Workshop 3.1 DesignModeler Basics
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Workshop 3.2 Sketching