Parameterisation and Optimisation

Parameterisation and optimisation studies enable designers to “zone in” on the best solution where for example, the available package space is restricted.  Below is a finite element model of an elliptical loudspeaker drive unit which are commonly employed to maximise acoustic output where the more common round loudspeaker shape would have too little radiating area.  The model is coupled to acoustic boundary elements to simulate the acoustic radiation from the cone at 1 metre distance.

 

The parametric structure is altered easily and returns acoustic data that relates to the performance trait to be improved, in this case, the axial frequency response is chosen as the target.

Here, it is demonstrated that the axial frequency response of an elliptical driver can be varied significantly with only small geometrical adjustments.  A more detailed model/ physical prototype can then be progressed based on the "best" performer.