Preliminary SEA model development and acoustic package development for EV

SEA modelling is a useful tool in the automotive field, since it can provide a good indication of interior noise within the very high frequency range. SEA model generation is a very complex phase in vehicle development and is usually postponed until late in the development phase, when detailed geometry is available. Today on the other hand, a new trend is emerging where SEA modelling at the early stage of a project is becoming important. Having a SEA model available at the early stage of a project can guarantee the correct sound package development in terms of allocated space and mass, but can also help with target definition for different subsystems and help guide engineer's judgment. In the following a new method will be proposed to allow SEA modelling in the early concept phases, it will be shown how this model can be used to define different subsystem targets and to achieve a desired noise level inside the vehicle.