A angled longitudinal horn is investigated through finite element method. The amplification factors and displacement distributions of the horns are calculated at their resonant frequency of longitudinal vibration. The calculated results show that amplification factor is mainly influenced by the length and radius of the horn, whereas the angle of the horn plays a little role. The longitudinal displacement is mainly depended on the angle of the horn. 5 different angled horns are manufactured and their vibration modes and amplification factors are measured by experiment with Polytec scanning vibrometer. It shows that the longitudinal vibration is successfully transferred to the output ports via the angled horn and the text values of amplification factors are compared with the finite elemental results.

angle; solid horn; finite element method; amplification factor; displacement distribution