Geometrically nonlinear dynamic and static analysis of shallow spherical shell resting on two-parameters elastic foundations

Civalek O.

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, cilt.113, ss.1-9, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 113
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.ijpvp.2013.10.014
  • Dergi Adı: INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1-9
  • Anahtar Kelimeler: Shallow shell, Nonlinear analysis, Dynamic response, Foundation effect, Computational modeling, DISCRETE SINGULAR CONVOLUTION, FREE-VIBRATION ANALYSIS, DIFFERENTIAL QUADRATURE METHOD, RECTANGULAR-PLATES, CIRCULAR PLATES, CONICAL SHELLS, CYLINDRICAL-SHELLS, LARGE DEFLECTION, STABILITY, HDQ
  • Akdeniz Üniversitesi Adresli: Evet

Özet

In the present study nonlinear static and dynamic responses of shallow spherical shells resting on Winkler-Pasternak elastic foundations are carried out. The formulation of the shells is based on the Donnell theory. The nonlinear governing equations of motion of shallow shells are discretized in space and time domains using the discrete singular convolution and the differential quadrature methods, respectively. The validity of the present method is demonstrated by comparing the present results with those available in the open literature. The effects of the Winkler and Pasternak foundation parameters on nonlinear static and dynamic response of shells are investigated. Some results are also presented for circular plate as special case. Damping effect on nonlinear dynamic response of shells is studied. It is important to state that the increase in damping parameter causes decrease in the dynamic response of the shells. It is shown that the shear parameter of the foundation has a significant influence on the dynamic and static response of the shells. Also, the response of the shell is decreased with the increasing value of the shear parameter of the foundation. Parametric studies considering different geometric variables have also been investigated. (C) 2013 Elsevier Ltd. All rights reserved.