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Modelling methodology in CATIA V5 Article Series

Posted by Alex Fernandes on 27-Sep-2018 16:13:10
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Over the past couple of months, we published a series of articles related to Modelling Methodology in CATIA V5.

The presented articles discuss the entire process for parts that are mainly prismatic in shape, with single body.

Modelling Methodology in CATIA V5 diagram

Multi-body and surface based modelling will be covered in future articles.

To recap, the topics and articles links are below:

1.  Part Creation Process    

In the first article of the series on how to implement and use modelling methodology,  we cover the creation process for a part file, breaking it down into two stages:  design stage and modelling stage.

With this in mind and respecting the methodology we guarantee that our part is editable. Editability is essential in any CAD model for future reuse.   View Article 1 >>


2.  Specification Tree Organization

In the second article, we discuss how to organize the specification tree in a part file during the creation process.

We compare two parts with the same end shape; one using this methodology and the other not using any specific methodology. When we edit a part the advantages will become easy to understand.   View Article 2  >>


3.  Design Stage

As this is the first stage of the creation process, we will define the best way to define design intent in our part; using a Skeleton and how to organize it.

Skeleton methodology has been around for quite some time now and the idea is to have to model’s main geometrical elements editable from one single location in the part’s specification tree.

For this purpose we create a geometrical set called Skeleton.  View Article 3  >>


Figure 1-The Angle Bracket part

 We will continue using the same Angle bracket example part, introduced in previous articles.


4.  Defining Sketches

In previous articles, we have discussed the skeleton and its internal structure and organization, so we now know where to store them in the specification tree.

In this article, we discuss methodology and core rules for sketch definition.  View Article 4  >>

Figure 8-Sketch with plane intersection projected in yellow


5.  The modelling stage

In the fifth article, we discuss in  detail the second stage of the creation process; the modelling stage.

We will discuss how to organize the PartBody that exists in every CATIA part. We will organize all solid modelling features by groups, define group sequence, group rules and feature naming.  View Article 5  >>


Figure 3-PartBody structure, with functional groups

6.  Defining features

In the previous article, we have discussed the PartBody and its internal structure and organization. Using the example called Angle bracket, we will discuss methodology and rules to be considered when defining features.

This is the fun bit, we will start modelling the solid geometry, using the geometrical elements defined previously inside the Skeleton group as references.  View Article 6  >>


7. Additional Rules

This article closes the main set of modelling methodology for prismatic parts, with single body.

This article is an add-on of additional rules to be considered when defining part files, which are additional to the others presented in all previously discussed articles.  View Article 7 >>



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Topics: Dassault Systemes, Training, CATIA