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Cone Shape Optimization Based on FE/BE Simulation to Improve the Radiated Sound Field

An optimization procedure is used in conjunction with finite/boundary element simulation to adjust the shape of an axisymmetric cone, defined as initially straight, and improve the radiated sound field, whilst keeping the maximum depth as a constraint. The effect of several different objective functions is considered. The optimization procedure is made more feasible by reducing the effect of local minima by artificially high damping applied to some components within the drive unit.

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