## Recursion and Recursively Defined Geometry Objects

##### Bjorn Sjodin July 17, 2019

Broadband antennas and metamaterials are 2 fields of engineering in which recursively defined geometry objects are a useful modeling capability. Writing methods makes this task easier.

### How to Automatically Remove Small Details in Your Model Geometry

##### Hanna Gothäll July 12, 2019

Have you ever wished for an automatic way to remove small details in your model geometry that are causing an unnecessarily fine mesh or a poor mesh quality? Enter the Remove Details operation.

### Best Practices for Meshing Domains with Different Size Settings

##### Ellen Krusell July 9, 2019

Tip 1: Choose the order of your meshing sequence operations. Tip 2: Use a single operation to mesh multiple domains. Keep reading to learn how to ensure the high-quality meshing of model domains.

### How to Automate Meshing in Frequency Bands for Acoustic Simulations

##### James Gaffney June 26, 2019

There is a large frequency range involved in acoustics phenomena, which means that modeling acoustics problems requires meshing a large wavelength range. COMSOL® offers an efficient way to do so.

### Analyzing Vibrations in Rotating Machinery Due to Bearing Misalignment

##### Prashant Srivastava June 25, 2019

You can use structural analysis to compare the angular velocity, axial displacement, and bearing reaction moment on the shaft for rotating machinery with aligned and misaligned bearings.

### Automatic Time Step and Order Selection in Time-Dependent Problems

##### Jan-Philipp Weiss June 20, 2019

Here’s an intro to the time-dependent solver log in COMSOL Multiphysics® and an in-depth look at the theory behind discrete time-stepping schemes and optimal time steps and discretization orders.

### Using Simulation Software in the Courtroom

##### Mark Robins June 17, 2019

Simulation is inherently a representation of reality. In court, lawyers establish what did or did not happen in reality and why. So what happens when simulation software is used in a legal case?

### Introduction to Modeling Acoustic-Structure Interactions in COMSOL®

##### Jinlan Huang June 12, 2019

To model an ASI problem, you need to account for the behavior of elastic waves in solids, pressure waves in fluids, and their interaction. The COMSOL® software includes interfaces for doing so.

### Frequency Response of Mechanical Systems

##### Henrik Sönnerlind June 5, 2019

Read this blog post for a detailed look at damped mechanical systems, a guide to setting up frequency-response analyses in COMSOL®, and a discussion of how to interpret your results.

### Efficient Parameter Control and Usage in COMSOL Multiphysics®

##### Friedrich Maier June 4, 2019

Any model can benefit from a proper parameter list. Learn how to control and use model parameters more efficiently with features such as parameter nodes and forms.

### How to Use Lumped Elements to Model a Mechanical System

##### Ajit Bhuddi May 29, 2019

Modeling a large, complex system? You may want to simplify configurations in the model setup to better understand it, but how? Enter the Lumped Mechanical System interface in COMSOL Multiphysics.