About the Rib Design Plastic Part Example

This example shows the basic workflow for a sensitivity-based topology optimization with rib design restrictions using a plastic injection part.

This page discusses:

About the Model

The considered model is a manufacture part for plastic injection.

The initial model is loaded at the nodes in the red region (see image below) with multiple forces in two load cases. The nodes in the orange region are encastered, while the blue nodes are constraint with a rigid body motion.

The surface elements except for the top part considered frozen during the optimization. Target of the optimization is the compliance minimization under a mass constraint.

Procedure Summary

Model: topo_ribs_plastic.ext
Design Area: All elements except frozen regions
Design Variable Constraint: Fix regions of frozen elements
Design Variable Constraint: Rib pattern restriction on all elements in the design area
Objective: Minimize compliance
Constraint: Maximum mass
Iterations: 60