ABSTRACT
One model to describe energy damping during vibrations is the model of the linear viscoelastic body. Expressions that relate stresses and strains in the form of Volter integral relationships are of the most general type [see Equation (4.78)]. When considering stationary vibrations, it is convenient to turn to the complex form of stress and strain representation and to introduce complex moduli, Equations (4.80) and (4.81). Complex moduli characterize energy losses in a complete loading cycle, as in Equation (4.85).
