Optimal design of sandwich floor panels made of high-strength composite materials considering stiffness constraints


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Abstract

The article considers the challenge of designing sandwich floor panels made of high-strength composites considering stiffness constraints. A dimensionless criterion is proposed for assessing the stiffness of floor panels. A new constraint equation determines an interrelation between geometrical parameters of composite constructions and a given criterion. A demo example and the results of designing a typical floor panel using a high-strength composite material are presented. The mass of a square meter of the structure is considered as an objective function, and the thickness of the skin and the height of the honeycomb core of a sandwich construction are considered as design variables. In order to find the optimal ratio of design variables, a graphical interpretation of the design problem is used considering strength and stiffness constraints in the design space. It is noted that the presence of restrictions on a given value of the permissible relative deflection leads to an increase in the required height of the honeycomb filler with an insignificant consumption of additional mass of the sandwich construction.

About the authors

V. A. Komarov

Samara National Research University

Author for correspondence.
Email: vkomarov@ssau.ru

Doctor of Science (Engineering), Professor of the Department of Aircraft Construction and Design, Chief of the Research and Educational Center
for Aircraft Construction (AVICON)

Russian Federation

S. A. Pavlova

Samara National Research University

Email: pavlova-sva@yandex.ru

Engineer of the Research and Educational Center for Aircraft Construction

Russian Federation

References

  1. Komarov V.A., Kutsevich K.E., Pavlova S.A., Tyumeneva T.Yu. Optimization of honeycomb sandwich floor panels made of polymer-matrix low-combustible composite materials based on high-strength carbon and glass fibers and adhesive binder. Vestnik of Samara University. Aerospace and Mechanical Engineering. 2020. V. 19, no. 3. P. 51-72. (In Russ.). doi: 10.18287/2541-7533-2020-19-3-51-72
  2. Astakhov M.F., Karavaev A.V., Makarov S.Ya., Suzdal'tsev Ya.Ya. Spravochnaya kniga po raschetu samoleta na prochnost' [Aircraft strength calculation reference book]. Moscow: Gosudarstvennoe Izdatel'stvo Oboronnoy Promyshlennosti Publ., 1954. 648 p.
  3. Bitkin V.E., Zhidkova O.G., Komarov V.A. Сhoice of materials for producing dimensionally stable load-carrying structures. Vestnik of Samara University. Aerospace and Mechanical Engineering. 2018. V. 17, no. 1. P. 100-117. (In Russ.). doi: 10.18287/2541-7533-2018-17-1-100-117
  4. Komarov V.A., Pavlova S.A. Programma Honeycomb_Opt graficheskoy interpretatsii zadach optimal'nogo proektirovaniya trekhsloynykh konstruktsiy [Honeycomb_Opt program for graphic interpretation of optimal design problems for three-layer structures]. Certificate of state registration of the computer program 2021610707RU. Posted 01.11.2021; published 01.19.2021.

Copyright (c) 2021 VESTNIK of Samara University. Aerospace and Mechanical Engineering

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