Mass optimisation of turbofan engine casing madeof sandwich structure

• Autorzy: Szymczyk Elżbieta , Jachimowicz Jerzy , Puchała Krzysztof , Szymczyk Wiesław

Identyfikatory

DOI

10.24423/cames.229

• Języki publikacji: EN

Abstrakty

EN

Materials of a high specific strength and stiffness are used in the aerospace industry to obtain the lowestpossible aircraft mass. The object of analysis is the casing of the F124 turbofan engine. The axiallycompressed cylindrical part of this casing is considered. The aim of the paper is to analyse possiblebenefits of replacing the original ribbed metal casing with a sandwich structure. The sandwich structure(metal-fibre laminate) of titanium alloy faces and a flax fibre laminate core is proposed. Semi-analyticaloptimisation of a sandwich structure was performed including a polynomial approximation of the criticalload with correction obtained based on numerical analysis. The best mass efficiency was obtained fora core to faces thickness ratio equal to about 4.

Słowa kluczowe

EN

thin-walled sandwich structure; flax laminate core; buckling; semi-analytical optimisation

PL

struktura warstwowa cienkościenna; rdzeń z laminatu lnianego; wyboczenie; optymalizacja częściowo analityczna

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Computer Assisted Methods in Engineering and Science
• Rocznik: 2018
• Tom: Vol. 25, no. 2-3
• Strony: 81--88
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Szymczyk Elżbieta

• Department of Mechanics and Applied Computer ScienceFaculty of Mechanical EngineeringMilitary University of Technologygen. Sylwestra Kaliskiego 2, 00-908 Warsaw, Poland

autor

Jachimowicz Jerzy

• Department of Mechanics and Applied Computer ScienceFaculty of Mechanical EngineeringMilitary University of Technologygen. Sylwestra Kaliskiego 2, 00-908 Warsaw, Poland

autor

Puchała Krzysztof

• Department of Mechanics and Applied Computer ScienceFaculty of Mechanical EngineeringMilitary University of Technologygen. Sylwestra Kaliskiego 2, 00-908 Warsaw, Poland

autor

Szymczyk Wiesław

• Department of Mechanics and Applied Computer ScienceFaculty of Mechanical EngineeringMilitary University of Technologygen. Sylwestra Kaliskiego 2, 00-908 Warsaw, Poland

Bibliografia

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• [9] E. Szymczyk, J. Jachimowicz, T. Niezgoda, K. Puchała. The influence of selected imperfections on stability of turbofan engine casing. In: Shell Structures: Theory and Applications, 567–570. CRC Press/Balkema, 2013.
• [10] E. Szymczyk, J. Jachimowicz, K. Puchała, P. Kicelman. Mass analysis of turbofan engine casing dimensioned with buckling condition.15th Stability of Structures Symposium, AIP Conference Proceedings, 2060: 020013, doi.org/10.1063/1.5086144, 2019.
• [11] E. Szymczyk, T. Niezgoda, J. Jachimowicz. Influence of ribbing on stability of aircraft engine casing [in Polish: Badanie wpływu użebrowania na stateczność kadłuba silnika lotniczego]. Przegląd Mechaniczny, 12: 73–76, 2002.
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• [13] L. Yan, N. Chouw, K. Jayaraman. Flax fibre and its composites – A review. Composites: Part B, 56: 296–317, 2014.