Development of a mathematical model of winding made of non-impregnated aramid fibers for strength analysis of the combined fan case in GTE compressor blade separation

Abstract


The design of a combined case with wound non-impregnation aramid fibers is presented. The main purpose of winding non-impregnation aramid fibers is to prevent the departure of the blade beyond the design of the engine. Wound non-impregnation aramid fibers - a new trend in security systems for aircraft gas turbine engines. Such systems are very cost-effective (value for money) to solve, for example, the problem of localization of the fragments of the engine when the blade is broken, since the threads have high specific strength per unit of weight. In this regard, the introduction of engine design combined body is a very promising solution. The principle of operation of a combined case is as follows: compressor blade breaks into contact with the adjacent blades and the housing. Metal case partially destroyed. Fragment blade engages through a metal casing with a thread wound to absorb the main part of the impact energy and keep the blade fragment to the drawing and friction with each other. For the proposed options to protect the body from Flight of the blade turbine engine developed a mathematical model based on the design of the complex LS-DYNA. The created model is verified by the results of field experiments and used to calculate the retention case cut short blades of a gas turbine engine.


About the authors

A. N. Krundaeva

Joint-Stock Company “NPO Saturn”, Rybinsk

Author for correspondence.
Email: anastas_siy@mail.ru

Russian Federation

Design Engineer

Yu. N. Shmotin

Joint-Stock Company “NPO Saturn”, Rybinsk

Email: yuri.shmotin@npo-saturn.ru

Russian Federation

Candidate of Science (Engineering)

Chief Designer

T. V. Tomilina

Joint-Stock Company “NPO Saturn”, Rybinsk

Email: tatyana.tomilina@npo-saturn.ru

Russian Federation

Candidate of Science (Engineering)

Deputy chief of Experimental Design Bureau -1 for Science

References

  1. Aviation Regulations. Part 33 Standards of airworthiness of aircraft engines. Moscow: Aviaizdat Publ., 2010. 44 p. (In Russ.)
  2. Xia Y., Wang Y. The Effects of Strain Rate on the Mechanical Behavior of Kevlar Fibre Bundles: An Experimental and Theoretical Study // Composite Part A: Applied Science and Manufacturing. 1998. V. 29, no. 11. P. 1411-1415. doi: 10.1016/s1359-835x(98)00038-4
  3. Perepelkin K.E. Struktura i svoystva volokon [Structure and properties of the fibers]. Moscow: Khimiya Publ., 1985. 324 p.
  4. Program complex three-dimensional modeling of non-stationary processes of nonlinear deformation of LS-DYNA. Version 971. Revision 7600.398 // LSTC, Livermore, Ca, USA, 2009.

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