Analysis and simulation of superplastic sheet-metal bulging by finite element method

摘要

A rigid-plastic finite element method for analyzing and simulating superplastic sheet- metal bulging process is presented. The varying pressure-time cycle that maintains the optimum strain-rate, the distribution of the stress-strain rate and thickness distribution were obtained. Superplastic bulging experiments of some materials were carried out with the pressure cycle Calculated from the code at the given temperature, and the numerical results were compared with The experimental measurements.