Ansys Design Modeler 14.5 Tips and Tricks

7/22/2019 Ansys Design Modeler 14.5 Tips and Tricks

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© 2011 ANSYS, Inc. October 29, 20131

Design Modeler Tips and Tricks




• User Problem – It can take many clicks of

a mouse to achieve the desired function

• The following will show recent usability

enhancements to significantly speed up

operations in Design Modeler

Problem statement: Too Many Clicks!




View Options can be accessedvia toolbar

• Rotate

• Pan

• Zoom

• Much quicker is Middle MouseButton (MMB) with key changes

–Rotate

– Shift + MMB : Zoom

– Ctrl + MMB : Pan

Middle-Mouse Multi-Options




•Often it is useful to use Box Select to lasso lots ofentities quickly

• User may wish to then use Single Select to add orremove a few entities while holding down Control key

•There is a “quick toggle” option to move between thesemodes more quickly without having to navigate thetoolbar

• Hold down RMB and click and release LMB while still holding RMBto switch between modes

Quick Toggle Single/Box Select




• Escape: equivalent to New Selection (if button is not

grayed out); also accessible via the Selection Toolbar

• Ctrl+A: selects three Body Types: Solid, Surface, and Line

• Ctrl+B: equivalent to Selection Filter: Bodies (also

accessible via the Selection Toolbar)

• Ctrl+C: equivalent to Copy (Sketching mode only; also

accessible via the Modify Toolbox)

• Ctrl+E: equivalent to Selection Filter: Edges (alsoaccessible via the Selection Toolbar)

• Ctrl+F: equivalent to Selection Filter: Faces (also

accessible via the Selection Toolbar)

• Ctrl+N: equivalent to Start Over option (also accessible

via the File Menu)

• Ctrl+O: equivalent to Load DesignModeler Database

option (also accessible via the File Menu)

•Ctrl+P: equivalent to Selection Filter: Points (alsoaccessible via the Selection Toolbar)

• Ctrl+S: equivalent to Save Project option (also accessible

via the File Menu)

• Ctrl+V: equivalent to Paste (Sketching Mode only; also


• Ctrl+X: equivalent to Cut (Sketching Mode only; also


• Ctrl+Y: equivalent to Redo (Sketching Mode only; also

accessible via the toolbar)

• Ctrl+Z: equivalent to Undo (Sketching Mode only; also

accessible via the toolbar)

• F1: ANSYS Inc. online help with DesignModeler

highlighted; for more information, see Help Menu• F2: Install help

• F3: Apply (during feature creation; for more information,

see Apply/Cancel in Plane)

• F4: Cancel (during feature creation; for more information,

see Apply/Cancel in Plane)

• F5: equivalent to Generate (also accessible via the 3D

Features toolbar)

• F6: equivalent to Shaded Exterior and Edges, ShadedExterior, and Wireframe model appearance controls

(toggle between three; also accessible via the View

Menu)

• F7: equivalent to Zoom to Fit (also accessible via the

Rotation Modes Toolbar toolbar)

• Ctrl++: Expand selection

• Ctrl+-: Shrink selection

Design Modeler Hot Keys

Note: Hotkeys coming for Ansys Meshing at R15




• Useer Problem – Requirements to

visualise more easily areas of the

geometry and understand issues quickly

• The following will show recent usability

enhancements to improve visualisation

capability in Design Modeler

Problem statement: Hard to See!


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Entity Selection Mode

• New Selection

• Single Select

• Box Select

• Select Points

• Select Edges

• Select Faces

• Select Bodies

• Extend Selection for multiple

entities –

Toolbars: Selection Tools

ShrinkExpand

Hotkeys

Ctrl+: Expand selection

Ctrl-: Shrink selection



• User Problem - Early versions of Design

Modeler did not have the capability to

find overlapping bodies

• The following will show usability

enhancements to find overlaps

Problem statement: Finding Body Overlaps



Enabling Beta Features

• To activate “Beta Options”, go to

Workbench Schematic Page – Go to Tools Options

– Select “Appearance” from tree

– Scroll down and enable the check

box of “Beta Options”

• This will activate beta featuresavailable in the Design Modeler

such as “Body Clash Detection”

and “Solid Extension”



Identifying Body Interferences

• Switch to Wireframe view for

better viewing of clash

• [Main menu] View Wireframe

• Locate various clashes in the

geometry as shown

• In this e.g. both cases involve a

compressor casing• Adjusting/moving casing may solve

problem

Interference between

compressor casing &

center housing

Interference between

compressor blades and

casing




• Tools Options Design Modeler Toolbars to add themost used options to your GUI layout

Toolbar Customization

•

Add common operations to your toolbar to speed up featurecreation




Working on Areas of the Geometry

RMB

• Reduce the display to work effectively on smaller areas using Hide/Expand

options

Or use Hotkey Ctrl-+RMB

Switch off




Tools Options DM Graphics

Default Highlight

Selection = Single Side

only “fills” surface indirection of surface

vector when chosen

Switching to “Both Sides” is

recommended for CFD where

inner surfaces are often

required. This option will show

the selected face as “filled”

from both directions.




Handling of Multi-Body Parts

• A regular support question is how toget conformal meshes from DM/AM

• In DM, where Shared Topology is set toAutomatic (default)

– Faces in contact imprinted & fused to form

a single face shared between the two

bodies

– Results in Conformal mesh in Ansys Meshing

– Common face acts as ‘Interior’ zone in

Fluent

Geometry Configuration – Multi-Body Parts

Common

Shared Face

DM Part

Details




Handling of Multiple Parts

• When multiple parts are attached to

a Meshing session a ‘Contact Region’

is automatically created between

those parts

• 2 Faces at Contact Region

• Each part meshed independently

– Results in a non-conformal interface

between the two parts (mesh nodes

on bodies do not line up and are

not connected) – Grid Interface in Fluent or GGI in

CFX can be defined for the faces at

the contact region

Geometry Configuration – Multiple Parts

Contact Region

Independent

Faces




Handling of Multi-Body Parts

• In DM, where Shared Topology is set

to Imprints

– The boundaries of the faces at

contact region are imprinted on

each other resulting in ‘like’ faces

– Contact Region is automatically

created at ‘like’ faces

– Results in Non-conformal interface

– Grid Interface in Fluent or GGI in

CFX can be defined for the faces atthe contact region

– To create identical mesh on the

‘like’ faces use ‘Match Control’

option (mesh will remain

unconnected)

Geometry Configuration – Multi-bodyParts

Two Like Faces




Simplification Tools for FluidExtraction




Simplification Tools for Fluid Extraction

Do you import solid parts with gaps between them ?

Closing those gaps is a necessity before using fluid extraction tools.

The following slides and demo will show you tools that can be used to

create contacts between parts in order to extract the fluid.




Partial contact only, a small cavity would be created

Simplification ToolsThin Surface – Body Only




Surface body created from external faces(visible by red color edge)





Normal extrusion of the surface body to close gap along

the hole surface





Partial contact only, small cavities would be created and

sharp angle would result from extraction

Simplification ToolsFace Delete




Details removed

Simplification ToolsFace Delete




Surface must be created to close gap between 2 pipes

Shape and topology are different (number of vertex)

Simplification ToolsSkin Loft




Vertices are projected to split edges in order to

get identical topology





A surface is created from the 2 edge loops using Create /

Skin Loft





All solid bodies are in contact or intersecting

Fluid Extraction ToolsFill by Caps




Cap surfaces created using Surfaces From Edges

to limit the fluid domain





Fluid Extracted





Share Topology




Do you work from imported or created CAD with multiple

bodies and want to get a conformal mesh (nodematching) ?

Creating a multibody part with automatic option will connect

the bodies using a generalized Boolean during transfer toANSYS Meshing.

The Share Topology command enables you to visualize the

result in Design Modeler.

The following slides will show some tools that can help you

verify that the result is as expected

Share Topology : How to Check Result ?




Edge Display Options

• Free Edges - 0 face - Blue

• Single Edges - 1 face - Red

• Double Edges - 2 faces - Black

• Triple Edges - 3 faces - Pink

• Multiple Edges (>3) - Yellow• Display Edge Direction

• Display Vertices

Toolbars: Display Controls

Note user can use Share Topology option

in DM to check connectivity before

proceeding to Meshing




Share Topology ExampleCase 1 : Perfectly Aligned Cylinders

Black edges :

- Edges connected to 2 surfaces only

- 2 internal surfaces

- Contact in ANSYS Meshing

- Non-conformal mesh

Before Share Topology After Share Topology

Purple edges :

- Edges connected to 3 surfaces

- Single shared surface

- No contact detected in AM

- Conformal mesh




Share Topology ExampleCase 2 : Non Coaxial Cylinders

Black and Purple edges :

- Sliver surfaces were created

After Share Topology

Hard to visualize on

industrial model




Sliver surfaces generated by Share Topology can be found

using Small Entity Search Analysis Tools





To help visualization of problems it is possible to change visibility of

edges depending on connection

- Hide

- Thicken


Triple edge hidden,

double edge now visible

=> problem




Sometime edges are so close they can’t be seen properly,

selection by box enables you to check their number(check at the bottom of the window)





Share Topology ExampleCase 3 : Intersecting Cylinders

Multiple Purple edges

- Intersecting body created

After Share Topology

Check the number of bodies, and

click on Share Topology in the Tree

Outline to highlight them




Share Topo - Example

Double and triple connected

edges at same position; hard to

flag visually

Small Entity Search used post

Share Topology automatically

flags this spike




Since 14.5 default option for CAD import is Workbench so the geometry is

not converted to Parasolid

There is an impact on face faceting quality, even with Facet Quality = 10 therendering is poor

Workaround : convert curved parts to parasolid

Face faceting

FQ = 10 - Parasolid FQ = 10 - Workkbench




If you need to generate

a model when you

open it in DM, check

that the option

below is on Partial

and not None

Generate needed at opening ?




In Win7 Options are saved here :

C:\Users\fmeslay\AppData\Roaming\Ansys\v150\en-us

globalPreferences.xml : Workbench

agPreferences.xml : Design ModelerdsPreferences.xml : Meshing / Mechanical

Tool / Options




Pattern handling




How to parameterize creation via patterns?

Do you need to easily create a large number of similar entities on yourmodel, and modify them consistently?

Reproducing entities can typically be achieved by creating patterns of

geometric objects. This is consistent with later body operations (e.g.

Boolean operations), and can be parameterized.

The hole creation is then followed by a patch generation, provided by asemi-automatic repair tool on boundary faces.

The following slides and demo will show you the capabilities of the pattern

tool, and how the multi-entity creation and modification can be

managed at a parametric level, whatever the shape of the geometry.




Multi-Holes Creation

The pattern tools works for three kindsof repetition :

- linear (one direction).

- circular (around an axis).

- rectangular (two directions).

Several patterns can be performed on

the same geometry.

Pattern can be defined from cut outgeometry.

Once defined, the number of repetition

can be set as a Workbench parameter.

linear pattern

circular pattern

second pattern added




Repair tool is designed to find and repair 3D and 2D holes

• 3D : fill hole

• 2D : edge delete / surface patch / edge connect

If one wants to create surface patches quickly for the

geometry shown (and not close the holes), it can be done by

simply creating surface bodies from surfaces and apply repair

tool to those surface bodies only.

Multi-Holes Closing

Concept / Surface from face

(thickness 0)

Tools / Repair / Repair Hole

(RMB Select in All Below toapply method to all holes)

Surface patch created




By default only 50 problems are listed in repair tool.

Limit can be changed in Tool / Option / Design Modeler

/Miscellaneous.

After patch creation the 2 extra surfaces can be deleted

with Create / Thin Surface / Surface to Remove

Multi-Holes Closing



Surface is created from Sketch

Then Pattern is applied to the surface body

Pattern for 2D

Ansys Design Modeler 14.5 Tips and Tricks

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