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Desktop Engineering Blog

Alex Fernandes

Alex is a graduate MSc in Mechanical Engineering from IST-Technical University of Lisbon. His thesis was based on ultrasonic metal welding research performed in a technical partnership programme with DELPHI Automotive Systems. He started a PhD programme that was developed between IST, DELPHI and Aalto University, Helsinki. During his time with DELPHI Alex won a Delphi Manufacturing Excellence Award, in 2009. Using CATIA to design components, he later tested for production release, showed him a new passion, CAD design. After three years of daily usage Alex achieved Certified Instructor status by Dassault Systemes, his latest achievement. Alex has a natural talent for teaching and is a passionate designer.
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Recent Posts

Modelling Methodology in CATIA V5 - Part 3

Posted by Alex Fernandes on 04-Jul-2017 09:00:00

The Design Phase

This is the third article of a series concerning how to implement and use modelling methodology in CATIA V5.

In this article, we will discuss the design stage in detail.

This is the first stage of the creation process; we will create a geometrical set called Skeleton and we will insert additional geometrical sets inside it. The component’s design intent is captured in the Skeleton geometrical set. 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. This also means that we will have many elements inserted inside this geometrical set, so for this reason we will rename them and organize them according to a specific logic.

Figure 1 - The Angle Bracket part

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Topics: Dassault Systemes, training, CATIA, CATIA Design

Modelling Methodology in CATIA V5 - Part 2

Posted by Alex Fernandes on 27-Jun-2017 09:00:00

Specification Tree Organization

This is the second article of a series concerning how to implement and use modelling methodology in CATIA V5.

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

1.  Avoid cryptic specification trees

In figure 1, you can compare the difference between; a part with an organized specification tree (left side) versus a part with mixed modelling specification tree (right side). Both files present the same end geometry, considering the initial parameters specified for the design.

Figure 1 - Organised specification tree vs mixed modelling versions of Angle Bracket part

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Topics: Dassault Systemes, training, CATIA, CATIA Design

Modelling methodology in CATIA V5

Posted by Alex Fernandes on 20-Jun-2017 09:00:00

 Part creation process

This is the first article of a series concerning how to implement and use modelling methodology in CATIA V5.

In this article, we will cover the creation process for a part file. We will break it down in two stages; design stage and modelling stage.

Let us imagine you need to edit a part, changing some parameters in existing features, and that the geometry update process fails after modification. Models that fail after editing are brittle and they work fine if you do not edit them!

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Topics: Dassault Systemes, training, CATIA, CATIA Design