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Design of Bezier and OURBS horns and their applications
Nguyen, Tam Hai-Dang
|關鍵字:||變幅桿的;Bezier horn;置換擴增;優化;B-spline horn;optimization;ultrasonic actuation;displacement amplification||出版社:||精密工程學系所||引用:||Chapter 1  Willie D. 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In this thesis, I developed ultrasonic horns with high displacement amplification. The profiles of the horn are based on cubic Bezier and open uniform rational B-spline (OURBS) curve, respectively. The ultrasonic actuations of the horns exploit the first longitudinal vibration mode of the horn. A design method of the horns using an optimization scheme and finite element analyses is developed. Prototypes of the horns are manufactured by a numerical control machining process. Performances of the proposed horns have been evaluated by experiments.
The experimental results are in good agreement with those based on the design procedure. Penetration force during ultrasonic cutting is measured to show the advantage of the developed Bezier horn. The weld strength of specimens welded by OURBS horn is better than those by the traditional catenoidal horn and the Bezier horn with the same length and end surface diameters.
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