Types of geometry optimization

You can perform two types of optimization:

• Optimizer

• Global Sensitivity

Optimizer

Optimizer provides full support for geometry optimization, including the use of feature parameters and expressions as design variables.

During the optimization, for each iteration, an Excel spreadsheet graph is dynamically updated to show the objective result (Y-axis) vs. iteration (X-axis). When the optimization is complete, the graph closes and the Optimization Spreadsheet is displayed.

When the solve is finished, the model will be in the final iteration state. The optimization makes changes to your master part file, idealized part file, FEM file, or Simulation file depending on the design variables that you defined. For more information, see Part files modified by Geometry Optimization.

Global Sensitivity

Global Sensitivity iterates through the limits of each selected design variable to determine how sensitive the design objective is to each design variable. Performing a global sensitivity study helps predict which design variables have the most impact on critical model responses. Therefore, it helps you determine which variables to include in a subsequent Optimizer analysis.

The software modifies the design variable values over a specified number of iterations. For example, if a design variable has a lower limit of 0.0, an upper limit of 10.0, and you specify 5 iterations for the global sensitivity study, the software performs 5 iterations, incrementing the design variable by a value of 2.0 at each iteration.

The results for the study are displayed in the Sensitivity Spreadsheet.

When a Global Sensitivity solve is finished, the model returns to its original state.

How do I

Create the geometry optimization

Create a weight or volume objective

Create a frequency objective

Create an objective from a result measure

Create a weight or volume constraint

Define a frequency design constraint

Create a constraint based on a result measure

Define design variables for the geometry optimization

Solve the geometry optimization

Learn more

Geometry optimization

Geometry Optimization workflow

Design objective – Geometry Optimization

Defining design constraints – Geometry Optimization

Defining design variables – Geometry Optimization

Part files modified by Geometry Optimization

Analyzing optimization results

Update an expression with the result from a specific iteration

Look up more details

Geometry optimization parameters

Quick links

Exporting result quantities as named expressions

Command reference

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Types of geometry optimization, Simcenter 3D 2021.1 Series

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