Eliseev S. V., Eliseev A. V., Mironov A. S., Vuong Q. T.
UDC 621.534; 62.752; 629.4.015 doi: 10.25730/VSU.0536.18.017
The application of dynamic reactions of ties in the connection of elements to estimate the capabilities of vibration protection system
Abstract. Assessment of the level of vibration effects on the elements of technological and transportation vehicles is one of the most important approaches in ensuring their reliability and operational safety. The aim of the research is to develop a method for constructing mathematical models of technical objects, whose vibrational interactions are estimated by the dynamic responses of the connections of the elements between themselves and the supporting surfaces. The work uses approaches based on the development of methods of structural mathematical modeling and introduces the concepts of dynamic responses of characteristic points of mechanical oscillatory systems, transfer functions of constraint responses and their frequency characteristics. The research demonstrates features of the dynamic properties of systems and the possibility of the occurrence of new dynamic effects. As additional constraints, a motion transformation device is introduced. It is shown that the ratio of the dynamic responses of constraints on the object of protection and on the support surface can be chosen as a parameter of the dynamic state of the system. Analytical dependencies are obtained to determine the coefficient of response dynamism.
Numerical modeling is performed within the scope of the model problem; Dynamic effects are revealed that reflects the properties of the system in the possibilities of creating zones of suppression of external influences when varying adjusting parameters. The possibilities of implementing such approaches are shown through a change in the ratio of spring stiffness in the "cascade".
Keywords: dynamic responses of constraints, transfer functions, motion transformation devices, dynamic stiffness.