Calculation features of the ultrasonic vibrating systems

The article is devoted to definition of features of development of ultrasonic vibratory systems, which to affect on accuracy of calculation of resonance frequency. Related with threaded connection between parts of vibratory system the feature of calculation is detected. Comparison of result of researches by FEM and parameter of real constructions is made. This comparisons show that at modeling of parts of vibratory system by FEM the core hole in the model must be muted by pin and pin should be taken with a diameter equal to the minimum diameter of the thread.