•Prem Kumar Soni LNCT Bhopal
•1 9755084093 •5/25/2018
Lecture Notes
On
CATIA (Software)
Prem Kumar Soni
Asst. Prof.
LNCT Bhopal
•Prem Kumar Soni LNCT Bhopal
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•Prem Kumar Soni LNCT Bhopal
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•Prem Kumar Soni LNCT Bhopal
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•Prem Kumar Soni LNCT Bhopal
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CONTENT
1. Lecture 1 3. Lecture 3
Introduction Wireframe and Surface
Software Overview Drafting
Part Design and
Sketching 4. Lecture 4
2. Lecture 2 Finite Element Analysis
Product Structure and Data Exchange
Assembly Parameters and
Modelling Formulas
More advance Part
Design
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CATIA (an acronym of computer-aided three-dimensional
interactive application) is a multi-platform software
suite for computer-aided design (CAD), computer-aided
manufacturing (CAM), computer-aided
engineering (CAE), PLM and 3D, developed by the
French company Dassault Systèmes.
CATIA started as an in-house development in 1977 by
French aircraft manufacturer Avions Marcel Dassault, at
that time customer of the CADAM software to develop
Dassault's Mirage fighter jet. It was later adopted by the
aerospace, automotive, shipbuilding, and other industries.
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Lecture 1
Overview
CATIA v5 is an Integrated Computer Aided Engineering
tool:
Incorporates CAD, CAM, CAE, and other applications
Completely re-written since CATIA v4 and still under
development
CATIA v5 is a native Windows application
User friendly icon based graphical user interface (GUI)
Based on Variational/ Parametric technology
Encourages design flexibility and design reuse
Supports Knowledge Based Design
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Lecture 1
Philosophy of CATIA V5
1. A Flexible Modelling environment
Ability to easily modify models, and implement design
changes
Support for data sharing, and data reuse
2. Knowledge enabled
Capture of design constraints, and design intent as well as
final model geometry
Management of non-geometric as well as geometric design
information
3. The 3D Part is the Master Model
Drawings, Assemblies and Analyses are associative to the 3D
parts. If the part design changes, the downstream models with
change too.
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Lecture 1
CATIA v5 Applications
Product Structure Freestyle Shaper
Part Design Digital Shape Editor
Knowledgeware
Assembly Design
Photo Studio
Sketcher
4D Navigator (including
Drafting (Interactive kinematics)
and Generative) Manufacturing
Wireframe and Finite Element Analysis
Surface
•11 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 1
CATIA User Interface
Current
Application
Menu Bar
Online Help
Application
Tool Bar
File Toolbar
•Prem Kumar Soni LNCT Bhopal View Toolbar
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Lecture 1
Interacting with CATIA (1)
Selecting an Application Working with Files
Use the Start menu to select an Use the File menu to create, open,
application save and print
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Lecture 1
Interacting with CATIA (2)
Display Commands
Hide/ Show
Fly Through
Hide
Fit View
Swap Visible Space
Layer control
Pan Properties
Rotate Display Characteristics for an
Zoom object are set by selecting the
Normal View entity, then pressing the right
mouse button and selecting
Standard Views
Properties from the menu
View Types: Shaded/ Hidden
Line/ Wireframe/ User Defined
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Lecture 1
Manipulating the Display using the Mouse
Pan Using the compass
Press and hold the middle mouse
button and move the mouse to pan
Rotate
Press and hold the middle mouse
button then the left mouse button
and move the mouse to rotate
Drag the axes or planes of the
Zoom
compass to dynamically rotate
Press and hold the middle mouse
button and click the left mouse
the display
button then move the mouse to Multi-select entities by
zoom in and out holding down the Shift key
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Lecture 1
More Common Commands
Copy/ Paste Hide/ Show
Geometry entities can be copied and Allows you to temporarily hide
pasted from one part to another. entities from the display
Paste Special allows you to:
Hidden entities can be recovered by
Paste a complete copy with clicking on the “Swap visible space”
history icon, and then selecting the entity to
Paste a linked copy make visible
Paste the result without linking
Update
Undo/ Redo
Used to update the part after
Allows you to undo previous actions
modification
Redo repeats an action that has been
undone
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Lecture 1
The Specification Tree
The Specification Tree is displayed on the left
side of the screen while you are working
Provides access to the history of how a part
was constructed, and shows the product
structure
Product entities can be selected from the
spec. tree or in the geometry area
Parts can be modified by selecting them from
the spec. tree.
Click on + to open a tree branch
Solid Parts are stored in the Part Body
branch of the Part tree
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Lecture 1
Getting Help
The online help library can be accessed by selecting
the Help -> Contents, Index and Search command
The Help home page provides a search facility, and
allows you to browse by application.
Every CATIA task has a getting started guide
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Lecture 1
Getting Help from the CATIA
Community
For general information about CATIA from IBM and Dassault
Systemes refer to:
www.catia.com
For access to the database of known problems refer to:
http://service.boulder.ibm.com/support/catia.support/databases
The CATIA operator’s exchange provides a forum for the exchange of
ideas and advice about using CATIA at:
www.coe.org
And look at Member Center -> Forum
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Lecture 1
Part Design
The Part Design application is used to create solid
models of parts
Solid parts are usually created from 2D profiles that
are extruded or revolved to form a base feature
The Part Design task is tightly integrated with a 2D
sketching tool
A library of features is provided to allow user to add
additional details to a base part
Parts can be modified by selecting their features in the
specification tree
Parts are stored in files with the extension .CATPart
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Lecture 1
Part Design
Base Features Dress-up Features
Fillets Draft Shell
Pad Slot Chamfers Thickness
Pocket Hole Transformation Features
Shaft Groove
Reference Elements
Translation
Rotation
Point Mirror
Line Pattern
Scale
Plane
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Lecture 1
Sketcher
The sketcher is used to create 2D sketches of designs,
and apply constraints to the sketched geometry
The sketcher is now the main environment for
developing 2D profiles that will be used to build solid
models (but traditional 2D wireframe techniques are
available in the Wireframe and Surface application)
The sketcher provides a flexible environment for
creating and modifying 2D geometry
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Lecture 1
Sketcher
Geometry Operations
Entering the sketcher
Click on the Sketcher icon or
select Start -> Mechanical
Design -> Sketcher Constraint Creation
Exiting from the
Sketcher
Tools Toolbar
Click on the Exit icon to leave
the sketcher and return to the
3D workspace
Snap to point
Geometry Creation Construction Geometry
Constraint
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Lecture 1
Using the Sketcher
The Sketcher is a parametric design tool
It allows you to quickly draw the approximate shape of
a design, and then assign constraints to complete the
shape definition
Constraints can be applied as:
Driving Dimensions – dimensions that control
the size of a geometric entity
Geometric Constraints – geometric
relationships such as parallel, perpendicular,
tangent, collinear
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Lecture 1
Sketching Example
1. Click on the Sketcher icon 4. Apply constraints to define the
2. Select the 2D plane to sketch on exact geometry required
(may be a plane, or the face of an
existing part), and the sketching
window will appear
3. Sketch the profile
4. Click on the exit icon to quit the
sketcher
5. Sketch is transferred into the 3D
modelling environment
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Lecture 1
Sketching Tips
To edit an existing sketch ensure that you select the sketch from the
specification tree, or select an element in the sketch. (If you do not
do this you will create a new sketch instead of modifying the
existing one)
If the sketch goes purple while you are constraining it is over-
constrained. Generally it is best to Undo the last constraint and
examine existing constraints to find the problem before continuing
Solids can only be created from sketches that form a single closed
boundary
The profile icon allows you to create complicated profiles including
lines and arcs. See the online help for more information
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Lecture 1
Creating a Solid Part from a Sketch
1. Click on the Pad icon to 4. Select the limit type from:
create an extruded part Dimension
2. Select the sketch containing Up To Next
the profile you want to Up To Last
extrude (note the sketch is Up To Plane
treated as a single entity)
5. Type in the length if required
3. The Pad definition window
6. Check the extrude direction
will appear
arrow
7. Click on OK to create the
Part
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•Prem Kumar Soni LNCT Bhopal 9755084093 5/25/2018
Lecture 1
Working with Features
The Part Design task uses intelligent design features
The features contain information about their context as well as
their shape
For example a Hole feature can only be created once you have
created a part body
A hole feature requires an attachment face, and driving dimensions
A hole is a negative feature – it is automatically subtracted from the main Part
Body
Other features include Pad, Revolve, Pocket, Groove, Thread, Rib,
Slot, Stiffener
When a new feature is added to a solid part it is automatically
combined with the existing part
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Lecture 1
Modifying a Part
All parts created in Part Design can be edited at any time in the life
of the part
The parameters used to create a feature can be accessed by double
clicking on the feature definition in the product specification tree or
on the part geometry
For example to change the height of a pad you should double click
on the pad node in the specification tree.
The original feature dialogue will appear on the screen
Change the values and click on OK.
When you have modified the feature parameters the part will
automatically update. The part turns red briefly to indicate that it
is out of date
•29 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 2
Assembly Design
The Assembly Design application allows you to
create a product model from a number of separate
parts
The parts in a product assembly are not joined
together, but assembled as they would be in a
physical assembly
The product assembly structure is hierarchical and
allows you to model complex product relationships
Constraints can be applied between the parts in
assembly to define relationships between them
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Lecture 2
Assembly Design
Product Structure Tools Move Toolbar
Insert New Component Manipulate
Insert New Product Snap
Insert New Part Explode and Assembly
Insert Existing Component
Replace Component Constraints Toolbar
Reorder Tree
Generate Numbers
Load Components
Unload Components Coincidence
Contact
Manage Representations Offset
Multi-Instantiation Angular
Anchor
Fix Together
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Lecture 2
Benefits of Assembly Modelling
Support for reuse of standard parts
Assembly design creates links to the master geometry definition,
so multiple instantiations of parts can be efficiently created
Design changes are automatically reflected in the assembly
Model sizes are minimised because geometry files are not copied
Management of inter-part relationships
Mating Conditions
Contact Constraints
Development of Kinematics models
Simple mechanisms analysis available
•32 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 2
Using the Product Structure Tree
The specification tree shows product
structure information relating to the parts
and sub-assemblies contained in an
assembly
In the example shown on the right the product is
called Product1
The product contains three components
CRIC_FRAME, CRIC_BRANCH_3 and
CRIC_BRANCH_1.
The Product and the Components do not
contain any geometry
Geometry is stored in parts inside the Component
definitions
The Constraints Branch shows the constraints
that have been created to define the relationships
between the components in the product structure
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Lecture 2
Steps for Creating an Assembly
1. Create a new CATProduct using File -> New ->
Product.
2. Use the Product Structure tools to lay out the
main assembly structure
3. Use Insert Existing Component or Insert New Part
to create geometry in the Assembly
4. Use Constraints to capture the design
relationships between the various parts in the
assembly
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Lecture 2
Saving Assembly Information
Assembly information is stored in a file with the extension
.CATProduct.
The CATProduct file contains only information relating to the product
assembly.
The detailed geometric information about the parts in the assembly is
referenced to the original .CATPart files
Warning
If you copy a.CATProduct file it will still point to the original part files
To copy an entire assembly use File -> Save All As… , specify a new location for the
.CATProduct file, then click on the Propagate button.
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Lecture 2
More Advanced Part Design
Boolean Operations
Transforming Parts
Assigning Materials
Calculating Mass Properties
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Lecture 2
Using Boolean Operations
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Lecture 2
Using Boolean Operations
To use the traditional Boolean operations approach to
solid modelling you must create multiple bodies within
a part.
Create additional Bodies by selecting the function
Insert -> New Body
Boolean operations (join, subtract, intersect) can only
be applied between the main PartBody, and other
bodies in the same Part
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Lecture 2
Transforming Parts
Solid features can be transformed using the transform
functions
Features can be mirrored, translated, rotated and scaled
Patterns are used to created rectangular or circular
arrays of features
•39 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 2
Assigning Materials
To Assign a material click on the Materials Icon on the
toolbar
Select a material from the material library
Click on the part you wish to assign the material to,
1. then click on Apply Material and OK. The material
will appear on the properties branch in the spec tree
Note: You may need to change the option settings
To make the parameters branch of the specification
tree visible. To do this select
Tools->Options->Infrastructure->Product Structure
Specification Tree -> Parameters
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Lecture 2
Calculating Mass Properties
Select the node of the part you want to analyse in the
specification tree
Click on the Measure Inertia icon
Or
Select Properties from the popup menu on the right
mouse button to see the properties form, select the
Mass tab and view the properties:
•Prem Kumar Soni LNCT Bhopal
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Lecture 3
Wireframe and Surface
The Wireframe and Surface task provides a more
traditional CAD 3D modelling environment
The Wireframe functionality allows you to create
Wireframe points, lines and curves in 3D space,
without using the constraint based approach of the
sketcher
The Surface functionality allows you to create smooth
freeform surfaces by sweeping Wireframe curves
through 3D space
Wireframe and Surface is integrated with the other
CATIA applications allowing for hybrid surface and
solid modelling
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Lecture 3
Wireframe and Surface
Wireframe Toolbar Surface Toolbar
Create Point
Create Line
Extrude Surfaces
Create Plane Surface of Revolution
Create Projections Offset Surface
Create Intersections Sweep Surface
Create Circle Create Filling Surface
Create Spline Loft Surface
Corner
Blend Surface
Create Parallel Curves
Extract Geometry
Create Boundary Curves
•Prem Kumar Soni LNCT Bhopal
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Lecture 3
Wireframe and Surface
Transformations Toolbar
Operations Toolbar
Translate
Join
Rotate
Split, Trim
Create Symmetry
Transform
Scale
Tools Toolbar
Affinity (irregular scaling)
Update
Axis
Work with Support
Snap to Point
Create Datum (deactivate History)
•44 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Creating Wireframe Geometry
Wireframe geometry can be created in 3D
space, or on a 2D plane (using a support)
Each wireframe function has a number of
different methods (e.g.a line can be created
from point to point, or parallel to an existing
line, or many other ways).
Existing geometry can be selected by picking
on the screen or selecting from the spec. tree
Additional options may be available by
pressing the right mouse button over the input
box
•45 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Creating Surface Geometry
Surfaces are usually created
using a wireframe skeleton
For example the Loft function
requires 2 or more cross section
curves
It also optionally accepts a
number of guide curves that
extend between the cross curves
A spine curve can be used to
define the shape of the loft
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Lecture 3
Using the Specification Tree with
Wireframe and Surface
Wireframe and Surface Geometry
is created in an “Open Body”
within the Part definition
Geometry in the open body is not
“attached” to the main part
New Open bodies can be created
using the Insert -> Open Body
command
A part can contain both Open
Body and Part Body information
•47 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Wireframe and Surface –
Hints and Tips
If you want to repeatedly use the same function (e.g. to
create multiple points) double-click on the icon. The
dialogue will remain open after you click on OK.
It can be very useful to create planes to use as a
support when creating geometry.
When creating surfaces take care that the underlying
wireframe geometry is consistent, and curve endpoints
are all matched
When creating surfaces ensure that curve orientations
are consistent
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Lecture 3
Solid – Surface Integration
The Part Design Application Surface Based Features
provides a Surface Based
Features toolbar to allow you
create solid bodies from surface
models. Split – Uses a surface to split a solid
object
Solids created from surfaces are
Thicken – Creates a solid body by
generally more difficult to
“thickening” an existing surface
modify that solids generated in
Close Surface – Creates a Solid body
part design
from a closed set of surfaces
The solid part maintains Sew Surface – Joins a surface to a
associativity to the surfaces it solid body
was generated from
•49 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Generative Drafting
The Generative Drafting Application allows you to
create engineering drawings from parts or assemblies
Generative Drafting automatically lays out
orthographic projections of a part onto a drawing sheet
Traditional Drafting functions can be used to annotate
the drawing layout
Drawings are stored in files with the extension
.CATDrawing
•50 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Generative Drafting
Views Toolbar Automatic Dimension
Creation
Create a Front View (other
views available underneath icon)
Create a section view Auto-dimension
Create a detail view Semi-Automatic Dimensions
Create a Clipping View
Create Views Via Wizard
•51 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Interactive Drafting
Allows you to create engineering drawings without
first creating a 3D part
Provides 2D drawing functionality to create geometry
layouts
Provides dimension and dress-up facilities for drawing
annotation
Can be used to add additional information to a drawing
created using Generative Drafting
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Lecture 3
Interactive Drafting
Geometry Creation Relimitations Toolbar
Point
Corner
Line
Chamfer
Circle
Trim
Arc
Profile Break
Curve Annotation
Pre-Define Profiles
Transformations Toolbar
Text
Symbols
Translate, Rotate, Scale, Mirror
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Lecture 3
Interactive Drafting
Dimensions Toolbar Dress up Toolbar
Create Dimension Centreline
Create Tolerance Thread
Axis
Fill
Arrow
•54 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Drafting Example
The drawing sheet will appear
Create a new on the screen
Drawing using
File -> New…
Select the
drawing
Format and
Scale
•55 •Prem Kumar Soni LNCT Bhopal •5/25/2018
9755084093
Lecture 3
Drafting Example
Use File -> Open… to open the
3D part you want to generate a
drawing from
It is useful to arrange the screen
so that you can see both views
before continuing
Use the View Creation toolbar to A preview of the view will
create a new view appear in the corner of the 3D
window
Click on the drawing sheet to
generate the view
Click on the Front View icon,
then select a plane on the 3D
model to specify the view
orientation
•56 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Drafting Example
You can generate orthographic Sections and detail views can
projects from an existing view also be generated from existing
using the Projection View icon views
•57 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Importing Geometry from External
Systems
CATIA provides import translators for many standard geometry formats
including
IGES, STEP AP203, DXF/ DWG,
Use File -> Open to import an external file
The options to control the import parameters are available in
Tools -> Options -> Product -> External Formats (check)
Imported CAD geometry does not contain any history information
Check the online help for more information about the types of entities
that can be translated
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Lecture 3
Exporting CATIA geometry to other
CAD systems
CATIA provides export translators for a number of
standard formats including:
IGES, STEP AP203, DXF/ DWG, VRML, CGM
Use File -> Save As… , then select the desired type in
the Save As Type box to export a file in an external
format
Exported geometry does not have any history
associated with it
Check the online help for more information about the
types of entities that can be translated
•59 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Generative Part Structural Analysis
Generative Part Structural Analysis allows you to
perform a finite element analysis on a solid part
It is highly automated and allows an analysis to be
performed with the minimum of interaction from the
user
Generative Part Structural Analysis provides very
limited mesh control, and can only be applied to solid
geometry
It is generally used as a “quick check” for structural
analysis
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Lecture 3
Generative Part Structural Analysis
Mesh Specification Toolbar Restraints Toolbar
Create Clamp
Local Mesh Size
Create Slider
Create Connections
Create Ball Joint
Create Virtual Parts
Loads Toolbar
Equipment Toolbar
Create Pressure
Created distributed and lumped Create Distributed Force
masses Create Acceleration
•61 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Generative Part Structural Analysis
Image Toolbar
Compute Toolbar
Specify External Storage
Compute Static Solution Visualise Deformations
Compute Frequency Solution Visualise Von Mises Stresses
Compute Buckling Solution Visualise Displacements
Visualise Principle Stresses
Analysis Toolbar
•62 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Steps for Performing an Analysis
1. Select the parts or features for analysis
2. Define any connections, attached parts and
non-structural masses
3. Specify loads and restraints acting on the part
4. Submit the job for analysis
5. Visualise Results
•63 Prem Kumar Soni LNCT Bhopal 9755084093 5/25/2018
Lecture 3
Parameters and Formulas
CATIA V5 contains a group of applications that
provide CATIA Knowledge ware capabilities
These tools allow you to perform design automation,
and capture non-geometric information about a product
The most basic Knowledge ware tool is the Knowledge
Advisor
Using Knowledge advisor you can create parameters
and relationships relating to parts
•64 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Knowledge Advisor
CATIA stores information about a part in form of
parameters
Formula function – allows you to create new
parameters and create relationships between existing
parameters.
Rules function – allows you to define design rules
relating to design parameters in a part or product
Parameters and Relations are displayed in the
specification tree
•65 •Prem Kumar Soni LNCT Bhopal 9755084093 •5/25/2018
Lecture 3
Knowledge Advisor Example
This relations branch shows two formulas:
The value of the diameter Radius.1 is set equal to 2* the
diameter of Hole.1 in the part
The value of the user defined parameter Pad Length is set
equal to the sum of the two limits on Pad.1
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Any Questions
?
67 Prem Kumar Soni LNCT Bhopal 9755084093 5/25/2018
THANK YOU
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