Nonlinear response of double-wall cylindrical shell vibrations under random excitation


Dogan V. Z., VAICAITIS R.

JOURNAL OF AEROSPACE ENGINEERING, cilt.19, sa.1, ss.46-54, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 19 Sayı: 1
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1061/(asce)0893-1321(2006)19:1(46)
  • Dergi Adı: JOURNAL OF AEROSPACE ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.46-54
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

An analytical model is presented to predict the nonlinear response of a double-wall sandwich cylindrical shell system subjected to random excitation. Nonlinear spring-dashpot models are integrated into the system to characterize the behavior of the soft core. Donnell's thin shell theory is used to develop the governing nonlinear equations of motion. A Monte Carlo simulation of stationary random processes, multimode Galerkin-type approach, and numerical integration procedures are used to develop linear and nonlinear response solutions of simply supported cylindrical shells. Numerical results include time domain response histories, root-mean-square values and response spectral densities. Parametric studies are performed to investigate the effects of nonlinearity, shell thickness, core stiffness, and thickness.