Dynamic state of aviation article’s structure under random kinematic loading
Aviation technics and technology
1. Izhevsk Electromechanical plant "KUPOL", 3, Pesochnaya str., Izhevsk, 426033, Russia
2. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia
AbstractResults of working out of numerical model and data of a computational estimation of characteristics of random vibration of aeronautical engineering articles in the conditions of joint flight with the carrier are presented. Dependences for spectral characteristics and vibrational acceleration and stress levels in various points of an article’s structure are received and zones of maximum levels of vibration and stresses for the articles placed on an external suspension of the maneuverable carrier are defined. Results of numerical experiments are compared by use of article’s dynamic models with various levels of complexity.
Keywords:aircraft carrier, oscillations, finite element method, beam, shell, dynamic state, vibrational acceleration, vibrational stress,stationary vibration, spectral density