تجزیه و تحلیل قابلیت اطمینان از پانل های خمش پویا

In this work, dynamic buckling of stiffened panels is analyzed numerically through a nonlinear incremental formulation using explicit time integration procedure under Abaqus software package. The dynamic buckling state is recovered from the curve giving the end-shortening as function of time when the structure is subjected to a compressive rectangular pulse loading applied parallel ally to the stiffeners direction. Fixing the pulse duration and the initial distortion magnitude as well as the ratio of material degradation in the heat affected zone, the dynamic buckling load was identified for each given configuration. This process has enabled the derivation of a response surface model which was used with Monte Carlo method to determine reliability of the stiffened panel with regards to the dynamic buckling state.