Okstability of a Noncircular Composite Shell under Axial Compression and Nonlinear Deformation

• Published in: Journal of applied mechanics and technical physics Vol. 66; no. 1; pp. 131 - 138
• Main Author: Zheleznov, L. P.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.02.2025; Springer Nature B.V
• Subjects: Aircraft; Applications of Mathematics; Axial compression; Classical and Continuum Physics; Classical Mechanics; Composite materials; Composite structures; Compressive strength; Cylindrical shells; Deformation; Efficiency; Finite element analysis; Finite element method; Fluid- and Aerodynamics; Initial stresses; Mathematical Modeling and Industrial Mathematics; Mechanical Engineering; Metal shells; Nonlinearity; Physics; Physics and Astronomy; Roundness; polymer composite material; finite element method; compression; shell; nonlinearity; stability
• ISSN: 0021-8944; 1573-8620
• DOI: 10.1134/S0021894425010171

— This paper describes a study of strength and stability of oval composite cylindrical shells under axial compression. The geometrically nonlinear problem for the shell is solved using the finite element method. The geometric dimensions of the shell are close to those of fuselages of modern passenger aircrafts. The other phenomena described in this paper are the effect of the cross-sectional out-of-roundness of the shell, the nonlinearity of the initial stress-strain state, and the stacking of monolayers by thickness on the critical loads and weight efficiency of composite and metal shells.