Vibration & Acoustic Analysis

Aerospace Multidisciplinarity-Enabling DEsign Optimisation (AMEDEO)

Sponsor: Marie Curie Initial Training Networks (ITN)

Partners: TUD, UL, Altair, TUM, Airbus, Rolls Royce, Von Karman Institute

The AMEDEO focuses on the development of new, innovative scientific Multi Disciplinary Design Optimization (MDO) methods that will be used to design a new generation of energy efficient aircraft, and on their application and validation on novel and critically important industrial problems.

 

Investigating the Sound Pressure Level Inside the Passenger Cabin of an Automobile using a Vibro-Acoustic Model

Sponsors: TÜBİTAK, Ford Motor Company

The interior noise inside the passenger cabin of automobiles can be classified as structure borne or airborne. In this study, we investigate the structure-borne noise which is mainly caused by the vibrating panels enclosing the vehicle. Excitation coming from the engine causes the panels to vibrate at their resonance frequencies and these vibrating panels cause a change in the sound pressure level (SPL) inside the passenger cabin and undesirable booming noise. In order to improve the passenger comfort inside the vehicle, it is critical to understand the dynamics of the vehicle and more importantly how it couples with the air inside the cabin. The design parameters of the most influential radiating panels (i.e., thickness) can then be optimized to reduce the interior noise.

 

Transfer Path Analysis of Automotive & Marine Structures

Sponsor: RMK Marine, Ford  Otosan

Most of the mechanical systems are composed of different subsystems which are coupled by several links. For these kinds of systems, it is important to understand how noise and vibration are transmitted via propagation paths, which path is the most critical one and how noise and vibration problem can be diminished.

Transfer Path Analysis (TPA) was developed as an alternative, more practical and convenient approach for solving noise and vibration problems. these paths.