On numerical simulation of vibrations in radio-electronic structures

In this article, from a scientific point of view, the issues of resistance to mechanical loads acting on on-board radio-electronic devices equipment (R.E.E.) are considered, where the necessary reduction of the impact of vibration loads is proposed to ensure resistance to mechanical influences. It is also said that in general, there are various means of protection against vibrations of the R.E.E., which include dampers, springs, gaskets, shock absorbers. To achieve this goal, you need to solve the following tasks: analyze the vibration of the R.E.E. unit (with and without attached masses) from vibration effects; to construct a mathematical model of the influence of the R.E.E.) parameters on the resonant state of the mechanical system, as well as on the magnitude of the oscillation amplitude. The aim of the work is to reduce the vibration of the radio- electronic unit and to develop a methodology for the influence of the attached mass, as well as changes in various geometric parameters on the resonant frequency and the attenuation decrements of the mechanical system. In solving the problem of R.E.E. from external vibration exposure at resonant frequencies, finite difference methods and the Godunov orthogonal run method were used. An algorithm for determining the resonant frequency and the displacement amplitude of the mechanical system under consideration is proposed. The application of the proposed mathematical model allows to reduce the total vibration loads of the R.E.E.to 25%.