Thermomechanical Behavior Optimization of the Ultrasonic Horn Using the Geometrical Modification

The ultrasonic transducer transmits vibrations to the load carried by the piece called Horn. Depending on the application of the horn, vibrations can be concentrated or propagated. It is used in various applications such as ultrasonic welding. A limitation of this piece, the temperature rise during operation due to structural damping. Because this piece is vibrating at resonant frequency in the axial mode, the temperature increases and its mechanical properties change, the frequency of resonance and vibration efficiency decreases sharply. In this paper, a new optimized geometry is presented to reduce the horn temperature. The new geometry is optimal in terms of heat transfer and at the same time try to minimize lateral mode may be achieved. In order to improve this problem, a numerical model of the temperature rise for desired piece in steady-state is achieved. In addition, using the genetic algorithm, Horn thermal optimization is performed in two consecutive steps with the idea of fins. In the results section, the details of the new geometry are presented and discussed in detail in its various aspects.