Effect of the operational load on resonance characteristics of the electromechanical system in ultrasonic welding of plastic materials

摘要

Numerical solution of a problem of oscillations of the electromechanical core system excited in the mode of auto-adjustment of the resonance frequency has been obtained. The system interacts with a visco-elastic disk heated due to internaldissipation of energy. The problem has been solved by the method of stepwise time integration to check the disk temperature, resonance frequency of the system and distribution of mechanical characteristics. The effect of auto-adjustment of the frequencyand static compression on evolution of the system parameters has been investigated.