Stability of single-layer spherical reticulated shell with imperfections

The single-layer spherical reticulated shell is the structure which is sensitive to imperfections. The initial imperfections reducing structural stability included initial curvature and residual stress of element and installation deviation of nodes. The stress-strain curve concerning the residual stress was got by model CRC, the influence of initial curvature was got by the half-sinusoid and the programs about them were programmed by ANSYS secondary exploitation. Then the stochastic imperfections method about installation deviation of nodes was advanced, meanwhile, a new method was put forward for stability of the single-layer spherical reticulated shell. Comparing with the consistent imperfect buckling analysis method, the precision of the new method was higher. So the new method is better to the stability analysis of single-layer spherical reticulated shell.