Optimization Module Updates

For users of the Optimization Module, COMSOL Multiphysics® version 5.4 includes a Density Model feature for topology optimization, the ability to combine a Parametric Sweep study with derivative free optimization, and new models to demonstrate the Density Model feature. Read more about these optimization features below.

Density Model Feature for Topology Optimization

Topology optimization for structural mechanics and fluid flow now involves substantially less trial and error. These topology optimization improvements are thanks to a new Density Model feature that introduces a minimum length scale: the filter radius. Using this feature is preferable to the other types of regularizations (for example, Tikhonov regularization) that is used in tutorial models in previous versions of COMSOL Multiphysics®. There is a new 3D topology optimization tutorial model in the Application Library that illustrates the new feature and best practices for exporting and importing STL-files of the resulting designs.

Models that use this feature:

Combining Parametric Sweeps with Derivative-Free Optimization

The Parametric Sweep study feature can now be used in combination with the Optimization study for analysis types where derivative-free optimization is required. A typical example is a parametric sweep over a geometry dimension such as a length or a radius. In previous software versions, you had to choose to perform either a Parametric Sweep or an Optimization study in such cases. Now, the two study types can be combined in one and the same model.

New and Updated Tutorial Models

COMSOL Multiphysics® version 5.4 brings a new important tutorial model for topology optimization.