Post-buckling nonlinear static and dynamical analyses of uncertain cylindrical shells and experimental validation

作者：Capiez Lernout E^*; Soize C; Mignolet M P

来源：Computer Methods in Applied Mechanics and Engineering, 2014, 271: 210-230.

DOI：10.1016/j.cma.2013.12.011

• Uncertainties
• Non-stationary stochastic excitation
• Geometrical nonlinearities
• Static post-buckling
• Dynamic post-buckling
• Experimental identification

The paper presents a complete experimental validation of an advanced computational methodology adapted to the nonlinear post-buckling analysis of geometrically nonlinear structures in presence of uncertainty. A mean nonlinear reduced-order computational model is first obtained using an adapted projection basis. The stochastic nonlinear computational model is then constructed as a function of a scalar dispersion parameter, which has to be identified with respect to the nonlinear static experimental response of a very thin cylindrical shell submitted to a static shear load. The identified stochastic computational model is finally used for predicting the nonlinear dynamical post-buckling behavior of the structure submitted to a stochastic ground motion.

• 出版日期2014-4-1