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tÉlÉcharger catia surface modelling pdfGenerative Shape Design
© Dassault Systèmes 1994-99. All rights reserved.
CATIA Version 5 Generative Shape Design allows you to quickly model both simple
and complex shapes using wireframe and surface features. It provides a large set of
tools for creating and editing shape designs and, when combined with other products
such as CATIA.Part Design, it meets the requirements of solid-based hybrid modeling.
The feature-based approach offers a productive and intuitive design environment to
capture and re-use design methodologies and specifications.
This new application is intended for both the expert and the casual user. Its intuitive
interface offers the possibility to produce precision shape designs with very few
interactions. The dialog boxes are self explanatory and require practically no
methodology, all defining steps being commutative.
As a scalable product, CATIA.Generative Shape Design can be used with other CATIA
Version 5 products such as CATIA.Part Design and CATIA.FreeStyle Shaper and
Optimizer. The widest application portfolio in the industry is also accessible through
interoperability with CATIA Solutions Version 4 to enable support of the full product
development process from initial concept to product in operation.
The CATIA Generative Shape Design User's Guide has been designed to show you
how to create and edit a surface design part. There are numerous techniques to reach
the final result. This book aims at illustrating these various possibilities.
Using This Book
This book is intended to help you become quickly familiar with CATIA Generative
Shape Design. You should already be accustomed with basic CATIA Version 5
concepts such as document windows, standard and view toolbars.
To get the most out of this guide, we suggest you start reading and performing the
step-by-step Getting Started tutorial.
This tutorial shows you how to build a shape design from a basic wireframe model.
The next sections present the main capabilities in the form of basic and advanced
user's tasks. It may be a good idea to take a look at the section describing the
workbench menus and toolbars.
Where to Find More Information
Prior to reading this book, we recommend that you read the CATIA.Version 5
Infrastructure User's Guide.
The CATIA.Part Design User's Guide and CATIA.FreeStyle Shaper and Optimizer
User's Guide may also prove useful.
Enhanced extrapolating surfaces or curves
New shape geometry capability: tritangent fillets and face-face fillets
Modified splitting and trimming capabilities
Enhanced lofted surfaces creation
Modified sweep creation capability
Creating Wireframe Geometry:
Enhanced spline creation capabilities
Modified projection creation capability
New analysis capabilities: mapping, draft and connection checking
Before getting into the detailed instructions for using CATIA Generative Shape Design,
the following tutorial aims at giving you a feel of what you can do with the product. It
provides a step-by-step scenario showing you how to use key functionalities.
The main tasks described in this section are:
This tutorial should take about 20 minutes to complete.
Entering the Workbench
This first task shows you how to enter the Shape Design workbench and open a
wireframe design part.
Before starting this scenario, you should be familiar with the basic commands
common to all workbenches. These are described in the CATIA Version 5
Infrastructure User's Guide.
1. Select Shape -> Generative Shape Design from the Start menu.
The Shape Design workbench is displayed.
2. Select File -> Open then select the GettingStartedShapeDesign.CATPart
document from the samples/ShapeDesign directory.
A wireframe design part is displayed.
In the rest of this scenario, you will use the construction elements of this part to
build up the following shape design.
Lofting and Offsetting
This task shows you how to create a lofted surface and an offset surface.
1. Click the Loft icon
The lofted Surface Definition
dialog box appears.
2. Select the two section curves.
3. Select the two guide curves.
4. Click OK to create the lofted surface.
5. Click the Offset icon
6. Select the lofted surface.
7. Enter an offset value of 2mm.
The offset surface is displayed
normal to the lofted surface.
8. Click OK to create the offset surface.
Splitting, Lofting and Filleting
This task shows how to split surfaces then create a lofted surface and two fillets.
1. Click the Split icon
The Split Definition dialog box
2. Select the offset surface by