Verification of a design model and evaluation of a technique of manufacturing aircraft engine composite parts on the basis of dynamic tests


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Abstract

The results of finite element modeling and experimental evaluation of dynamic characteristics (vibration modes and frequencies) of the composite element of aircraft power plant structures are presented. The aim of the work is to develop effective design and technological schemes for thin-walled complex-geometry composite parts, taking into account the peculiarities of mechanical behavior of polymer composite materials to the fullest extent possible. A method for determining the parameters of natural oscillations of composite parts in a free state using a ping test is developed, which allows excluding the influence of kinematic boundary conditions and obtaining frequency characteristics that depend only on the local characteristics of the material which are primarily determined by the manufacturing technology. According to the results of measurements of the amplitude-frequency parameters of the dynamic response, spectrograms of damped oscillations are obtained the peak values of which correspond to the experimental evaluation of the natural frequencies of the composite part. Verification of the design model was carried out according to the results of the ping test and a method for assessing the quality of technological processes of manufacturing thin-walled carbon fiber structures was proposed.

About the authors

A. V. Zinin

Moscow Aviation Institute (National Research University)

Author for correspondence.
Email: allzin@yandex.ru

Candidate of Science (Engineering);
Associate Professor of the Department of Strength of Materials, Dynamics and Strength of Machines

Russian Federation

A. N. Arkhipov

Moscow Aviation Institute (National Research University)

Email: arkhipov.48@list.ru

Candidate of Science (Engineering);
Senior Researcher of the Research Department

Russian Federation

D. P. Kholobtsev

Moscow Aviation Institute (National Research University)

Email: nio203_mai@mai.ru

Head of the Research Department

Russian Federation

Yu. A. Ravikovich

Moscow Aviation Institute (National Research University)

Email: yurav2@yandex.ru

Doctor of Science (Engineering);
Vice Rector for Research; Head of the Department  of Construction and Design of Engines

Russian Federation

A. O. Shevjakov

Moscow Aviation Institute (National Research University)

Email: shevyakov13@yandex.ru

Engineer of the Research Department

Russian Federation

M. A. Kholmanova

Public Joint-Stock Company UEC-Saturn

Email: marinakholmanova@gmail.com

Design Engineer

Russian Federation

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