Stress analysis of composite cylindrical shells with an elliptical cutout

Erkan Oterkus, Erdogan Madenci, Michael P. Nemeth

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A special-purpose, semianalytical solution method for determining the stress and deformation fields in a thin, laminated-composite cylindrical shell with an elliptical cutout is presented. The analysis includes the effects of cutout size, shape, and orientation; nonuniform wall thickness; oval cross-sectional eccentricity; and loading conditions. The loading conditions include uniform tension, uniform torsion, and pure bending. The analysis approach is based on the principle of stationary potential energy and uses Lagrange multipliers to relax the kinematic admissibility requirements on the displacement representations through the use of idealized elastic edge restraints. Specifying appropriate stiffness values for the elastic extensional and rotational edge restraints (springs) allows the imposition of the kinematic boundary conditions in an indirect manner, which enables the use of a broader set of functions for representing the displacement fields. Selected results of parametric studies are presented for several geometric parameters that demonstrate that this analysis approach is a powerful means for developing design criteria for laminated-composite shells.

Original languageEnglish (US)
Pages (from-to)695-728
Number of pages34
JournalJournal of Mechanics of Materials and Structures
Volume2
Issue number4
StatePublished - Apr 2007

Fingerprint

Stress Analysis
Cylindrical Shell
Laminated composites
Stress analysis
Kinematics
Laminated Composites
Composite
Lagrange multipliers
Composite materials
Potential energy
Torsional stress
Admissibility
Eccentricity
Stiffness
Boundary conditions
Torsion
Shell
Requirements
Energy
Demonstrate

Keywords

  • Composite
  • Cutout
  • Cylindrical
  • Stress

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Stress analysis of composite cylindrical shells with an elliptical cutout. / Oterkus, Erkan; Madenci, Erdogan; Nemeth, Michael P.

In: Journal of Mechanics of Materials and Structures, Vol. 2, No. 4, 04.2007, p. 695-728.

Research output: Contribution to journalArticle

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