Finite Element Modeling of Surgical Scalpel with Piezoelectric Actuator

The main goal of the present work is mathematical and finite element modeling of component dynamic oscillatory systems, including piezoceramic elements, elastic elements and external influences from soft tissues that describe the operation of ultrasonic medical devices, as applied to instruments and medical devices for finding the most effective forms and modes of operation. Elastic and piezoceramic solids are modeled within the linear theory of elasticity and electroelasticity, and soft tissues are acoustically medium with certain viscosity coefficients. As a research tool used CAE package ACELAN, which builds three-dimensional and axisymmetric models of the device. In numerical experiments, a modal and harmonic analysis is performed, on the basis of which the most effective operating frequencies are identified.