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Optimum design of large cross-section blade-like ultrasonic plastic welding horns

LIANG Zhao-feng1,2,ZHOU Guang-ping1,ZHANG Yi-hui1(1Department of Electronic Engineering,Shenzhen Polytechnic,Shenzhen 518055,China)(2Graduate University of Chinese Academy of Sciences,Beijing 100080,China)  
The structure of large cross-section blade-like ultrasonic plastic welding horn was optimized using the finite element analysis package ANSYS.Based on engineering requisition,the optimum program was written applying the length of horn,the length and width of slot as design variables,the longitudinal resonant frequency of horn and the frequency spacing as constraint condition,the uniformity of amplitude as objective function.Some essentials of program were presented and corresponding solutions were also given.The example of optimum design shows that this optimum method can solve well the design problem of large cross-section ultrasonic plastic welding horns,and it not only reduces the design period but also cuts expenses dramatically.
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