Experimental analysis of the effect of dent variation on the buckling capacity of thin-walled cylindrical shells

Korucuk F. M. A., Maali M., KILIÇ M., AYDIN A. C.

THIN-WALLED STRUCTURES, cilt.143, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 143
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1016/j.tws.2019.106259
  • Dergi Adı: THIN-WALLED STRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: Theoretical and experimental, Cylindrical shell, CFRP strips, Longitudinal dent number, Hydrostatic pressure, SEMIRIGID CONNECTIONS BEHAVIOR, CIRCULAR STEEL TUBES, POSTBUCKLING BEHAVIOR, EXPERIMENTAL-MODEL, HOLLOW SECTIONS, CONICAL SHELLS, ANGLES, IMPERFECTIONS, COMPRESSION, BEAM
  • Atatürk Üniversitesi Adresli: Evet

Özet

Tanks, silos, and most large steel-shell structures consist of smaller pieces connected together during the manufacturing process. This causes several types of malformations on the shell walls. Furthermore, thin-walled members can be easily deformed in wall surfaces owing to the thickness of the structure. Fourteen thin-walled cylindrical shell specimens in two groups with different dent depths and various longitudinal dent numbers subject to hydrostatic pressure were tested in the present work. The models were designed to demonstrate how repairing dents by using carbon-fibre-reinforced polymer can recover lost capacity. The results of testing under different theories and codes were compared. This study shows the decreasing effects of the longitudinal dent number on the buckling capacity of the shells. Using carbon-fiber-reinforced polymer strips resulted in softening or stiffening behaviour in the models. Furthermore, to obtain the initial and overall buckling according to theoretical formulas, coefficients were predicted to obtain the initial, overall, and collapse buckling without an experiment for the models that were beyond the scope of the theories.