Technical Practices on Modular Design Approach

In this section, you will find technical practices and recommendations for working with Modular Design Approach in CATIA 3DEXPERIENCE.

INTRODUCTION

CONTENT

The table below lists key practices covered in this section:

Technical Practice


Description

Exploring Modules and Interfaces
 

This technical practice introduces the Modules and Interfaces feature in CATIA 3DEXPERIENCE. It demonstrates how to package design features into named, reusable modules. This enables automatic change propagation and structured design reuse across parts.

Working with Alternative

This technical practice demonstrates how to create and manage multiple design variants as alternative modules under a single parent. It enables designers to explore, compare, and switch between competing geometric solutions instantly. This is achieved without maintaining separate files or breaking interface connections.

Working with Fallback

This technical practice demonstrates how to define backup reference surfaces, planes, or parameters as fallbacks for module input interfaces. It ensures downstream modules continue generating correctly when the primary connection to an upstream module is lost or broken.

Structure the Modules

This technical practice demonstrates how to organize individual modules into a logical parent-child hierarchy. It utilizes the Module Structure Manager, Group in Parent Module, and Ungroup Structure Module commands. This keeps the specification tree readable, manageable, and adaptable as design complexity grows.

Saving Modules with Library

This technical practice demonstrates how to create a library and save fully defined modules inside it with complete interface contracts preserved. Designers can instantiate these modules into any new 3D design context. The interfaces adapt automatically without requiring manual modification.

Saving Modules with Catalog

This technical practice demonstrates how to create a catalog with a structured chapter hierarchy to store validated modules. This supports organization-wide reuse by allowing teams to retrieve and configure standard assets. It eliminates the need to rebuild design assets from scratch.

Module for Generative Shape Design Plus

This technical practice demonstrates how the Modules and Interfaces feature packages Geometrical Sets into watertight surface modules with formally defined input and output interfaces in Generative Shape Design Plus. This enables cross-module surface referencing and automatic change propagation. It also allows seamless switching between alternative surface solutions.

Module for Part Design Plus

This technical practice demonstrates how the Modules and Interfaces feature adds structured reuse and interface-driven configurability to solid feature design in Part Design Plus. It highlights the BRep cross-module limitation. It also explains how to resolve this limitation using symbolic plane references.

Module for Concept Engineering

This technical practice demonstrates how the Modules and Interfaces feature is applied within the Concept Shape Engineering app. Designers can package conceptual surface geometry into structured modules with defined interface contracts. This supports early-stage design exploration and variant management before detailed design begins.