Actual Problems in Machine Building 2018 Vol. 5 No. 1-2

Актуальные проблемы в машиностроении. Том 5. № 1-2. 2018 Технологическое оборудование, оснастка и инструменты ____________________________________________________________________ 53 IMPROVEMENT OF VIBRATION DEFENSE FOR MECHANICAL SYSTEMS Rykov А.A. , Ph.D. (Engineering), Associate Professor, e-mail: teormech@ngs.ru Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian Federation Abstract We suggest method allowing to transform the mechanical system state, is described by arbitrary generalized coordinates, in the state, to which these coordinates will be main. It is achieved by installation of elastic element with negative hardness in the mechanical system. In that case the oscillations for some coordinates are separated and somebody can excite and watch harmonic oscillations both separately for every coordinates and simultaneously for all its. This elastic element allows also to change the values of natural frequencies. It gives the chance to reduce the maximal natural frequency and to draw together values of natural frequencies. As a result diapason of all frequencies is displaced to the left. It increases opportunity to go out from resonance and thereby improves the defense of mechanical system from vibration. Besides it allows to decrease weight of system. Keywords Elastic element, Diesel-generator, Negative hardness, Natural frequency