While working at Bose, I completed numerous vibration simulations with NX Nastran. The purpose of these simulations was to identify the following- first major bending mode, resonance frequencies, and twisting of the housing about the center axis.

With the results, I was able to strengthen the design of speaker housings and reduce transducer buzz. For confidentiality reasons, only the image below can be shown.

Vibration Simulation of Sample Speaker Housing