Bending of Composite Cylindrical Shells with Circular Cutouts: Experimental Validation

Edgars Labans, Chiara Bisagni, Mansur Celebi, Brian Tatting, Zafer Gürdal, Agnes Blom-Schieber, M Rassaian, Steven Wanthal

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)


An experimental study of unstiffened graphite-epoxy cylindrical shells with cutouts subjected to bending load is presented. Two cylinders were tested: a classical laminated cylinder with constant-stiffness and a fiber-steered cylinder with variable stiffness in circumferential direction. Both cylinders were tested until collapse in displacement control. Displacements and strains were measured by displacement sensors, strain gauges, and two digital image correlation systems. Analysis of the test data indicates that the highest stressed area was the edges of the cutouts where local displacements created large compression strains. The experimental data were compared with progressive damage analysis results obtained with a finite element analysis that included measured geometrical imperfections. The research contributes to the knowledge of variable-stiffness composite structures and their applications in aircraft fuselages.
Original languageEnglish
Pages (from-to)1534-1550
Number of pages17
JournalJournal of Aircraft: devoted to aeronautical science and technology
Issue number4
Publication statusPublished - 2019


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