Vibrations of mechanical systems.
This article presents some information from the theory of vibrations of mechanical systems, which can be useful in their modeling in the software complex EULER. Practical recommendations on the choice of dissipation characteristics in modeling are given.

Topics covered:
- free oscillations of a system with one degree of freedom and linear characteristics;
- logarithmic decrement and other characteristics of oscillations;
- damping of oscillations at different types of dissipative forces;
- forced oscillations of linear and nonlinear systems;
- natural oscillation frequencies of some mechanical systems.

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