جستجوی مقالات مرتبط با کلیدواژه "آزادسازی انرژی" در نشریات گروه "مکانیک"

In this study, a method for uncertainty analysis of laminated rectangular plate made of glass/epoxy with interlaminar crack (delamination) in loading mode I, II and I/II is performed using energy criterion. Limit state functions have been obtained to analyze the reliability of delamination growth in each loading mode according to the concepts of fracture mechanics and energy release rate. By using random variables and limit state functions according to energy criterion, uncertainty assessment will be performed using Response Surface Methodology (RSM). The main idea of the response surface methodology is to approximate the implicit response surface function using an explicit mathematical equation with random variables involved in the limit state function. Since the approximation of the limit state function is explicit, the first/second order reliability method can be used to estimate the probability of failure. It was indicated that in all modes the probability of delamination growth calculated by the surface response method has the highest value. Finally, the effects of initial delamination, laminate layer and loading in different modes on the delamination growth are obtained from the perspective of the reliability of composites laminates.