The Investigation on Static Stability Analysis for Reticulated Shell with Initial Defect Value Using Stochastic Defect Mode Method

Regarding the effect of initial geometric defect (IGD) on static stability single-layer reticulated shells, its distribution pattern and magnitude are main concerns to researchers. However, suitable selection (IGDM) is still a controversial topic. Therefore, it intended study determination proper IGDM based structure force state (SFS) coefficient. In order find out qualified IGDM, more than 5200 numerical cases carried for four types commonly used shells with span ranging from 40 70 m rise–span ratio 1/4 1/7, within random mode method, by taking both material nonlinearity into account. The results show that feasible set L/500 as when evaluating shell. addition, an updated criterion identify SFS at critical (SCS) developed.