Creo Topology Optimization > Examples > Example 8: Topology Design with Casting Fabrication Constraints
Example 8: Topology Design with Casting Fabrication Constraints
Use the model lever_arm.prt for this example.
This example demonstrates how to use topology optimization to design a light and stiff structure.
Highlighted features
Min Strain Energy, Mass Fraction constraint, Filling (casting) fabrication constraint
Optimization problem statement
The following optimization problem will be created and solved:
Minimize Strain Energy
When the objective is to minimize strain energy, the purpose is to get the stiffest structure under the given load for the allowable amount of material.
Subject to:
Mass fraction <= 0.2
The example contains one analysis. The loads/constraints are shown in the image below:
Mesh control
Maximum element size: 15 mm
Topology region
The component, excluding volume region 1 and 2, as shown in the image below.
Init. mass fraction: 0.2
When mass fraction is used as a constraint, it is recommended to use the same constraint bound value as the initial mass fraction value.
Fabrication constraints:
Filling along the Z axis of coordinate system WCS
Minimum member size: 30 mm
It is recommended to set the Minimum member size to at least twice that of the mesh element size.
Spread fraction: 0.5
Design objective
Minimize Strain Energy
Design constraints
Mass fraction <= 0.2
Optimization study
The study refers to the defined topology region, design objectives, and constraints
Advanced settings:
For analysis output files, only the first and last cycle are requested.
Use default settings for all other analysis and design parameters.
Topology Result
Topology density isosurface
Topology element density
Geometry Reconstruction
Tessellated model
Solid model