Mathematical simulation vibration and dynamic states of an aircraft equipment structure in the conditions of their application

Аuthors

Verbickij A. B.^*, Rodionov G. L.^*, Sidorenko A. S.^*

*e-mail: k906@mai.ru

Abstract

Outcomes of development of numerical model and data of a calculated estimation of characteristics of a dynamic state of an aircraft equipment structure, placed on a wing of the aviation carrier, at action of loadings from application of equipment are presented. On the basis of the developed finite-element model corresponding to features of a real structure of an outer wing, own forms and frequencies of a structure taking into account influence of stores are defined. Loadings from application of equipment are presented in a in the form of quasi-stationary random processes on the limited time section. Spectral density and levels of components vibration acceleration in places of a suspension bracket of equipment and zones of a structure with vibration maximum levels are defined. Estimations of the maximum values of displacements of equipment structure in the conditions of application for various loading cases and various variants of an arrangement of equipment are received. The work is executed at financial support of the RFBR (the project № 09-08-00519-а).

Keywords:

the aviation carrier; oscillations; finite element method; beam, shell, dynamic state; vibration acceleration; stationary vibration, spectral density