Computational and experimental study of the behavior of a flat reinforced carbon fiber panel on impact

DOI: 10.34759/trd-2022-126-04

Аuthors

Martirosov M. I.^*, Khomchenko A. V.^**

PJSC Yakovlev , 68, Leningradskiy prospect, Moscow, 125315, Russia

*e-mail: Mikhail.Martirosov@yakovlev.ru
**e-mail: khomchenkoanton@yandex.ru

Abstract

Among the structural materials currently used in aviation technology (OT), polymer structural materials (PCM), for example, carbon fiber plastics, which have certain advantages over traditional metal materials for structural purposes, have become widespread. Among such advantages are relatively low density, high specific strength and rigidity, high wear resistance, fatigue resistance, low coefficient of thermal expansion, resistance to chemical aggressive media, damping ability. Speaking about the disadvantages of PCM, it should be noted that during the production and operation of structural elements made of such materials, defects of various types may occur, which have a serious impact on the residual strength. The level of safety of an AT created on the basis of new materials and new technologies should not be lower than the level of safety of an existing AT made of traditional structural materials (and according to traditional technologies). It is important to note that the purpose of developing new PCM is to combine various components to create materials with new specified characteristics that differ from the characteristics of the original components.

In the works [1]-[4], the behavior of structural elements made of PCM in the presence of multiple defects such as bundles of arbitrary shape, size and location under the action of non-stationary loads of various nature was previously considered.

The paper presents a numerical and experimental study of the behavior of a four-stringer flat panel made of a polymer composite material under low-speed impact.

Validation of the numerical experiment based on the results of field tests was carried out. The validation results showed that the maximum stratification area as a result of the impact differs by no more than 11%.

Keywords:

polymer composite materials, carbon fiber, flat four-stringer panel, impact, numerical study, experiment

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