Stochastic dynamic stability analysis of composite curved panels subjected to non-uniform partial edge loading

•Stochastic dynamic stability analysis of composite structures is performed.•Importance of dynamic stability analysis for stochastic systems is highlighted.•Stochasticity in composite system properties (structural and material attributes) as well as loading is considered.•A surrogate based approach is adopted to achieve computational efficiency in the stochastic analysis.

The stochastic dynamic stability analysis of laminated composite curved panels under non-uniform partial edge loading is studied using finite element analysis. The system input parameters are randomized to ascertain the stochastic first buckling load and zone of resonance. Considering the effects of transverse shear deformation and rotary inertia, first order shear deformation theory is used to model the composite doubly curved shells. The stochasticity is introduced in Love's and Donnell's theory considering dynamic and shear deformable theory according to the Sander's first approximation by tracers for doubly curved laminated shells. The moving least square method is employed as a surrogate of the actual finite element model to reduce the computational cost. The results are compared with those available in the literature. Statistical results are presented to show the effects of radius of curvatures, material properties, fibre parameters, and non-uniform load parameters on the stability boundaries.