In a wide range of industries, simulation occupies a key role in product design due to the high cost associated with building and testing physical prototypes. In the transport industry, noise and vibration simulation using classical methods such as Finite Elements (FE), Boundary Elements (BEM) and Statistical Energy Analysis (SEA) are well integrated into standard design processes. These methods provide a good solution for low or high frequency analysis but cannot cover the mid-frequency gap where structure-borne noise predictions are not possible with FE (too many degrees of freedom DOF) structure-borne noise or SEA (overall modal density low and presence of global modes).
“FE/SEA Coupled” is a method that rigorously couples FE and SEA representations of structural and acoustic modes. This method has been use extensively in the last few years and is becoming a standard in industry sectors such as space, aeronautic and trains for interior noise predictions. “FE/SEA Coupled” combined with the Fast Multipole Method (Boundary Element Method BEM) provides the ability to predict both interior and exterior noise prediction problems such as automotive horn noise, pass-by noise, barrier design, suspended highway noise predictions, ships and submarine underwater radiation. This paper presents numerous applications where the “FE/SEA Coupled” method has been used with success to predict structure-borne noise in industrial design processes.
2010 – ICTN 19th International Conference on Traffic Noise, Dresden, Germany
Denis Blanchet (ESI Group, Germany)
Arnaud Caillet (ESI group, Germany)