A Comprehensive Mathematical Analysis on Achieving Stress–Strain Behavior at Large Strains in Bulge Test

In this study, a comprehensive mathematical analysis of the bulge test is presented. The geometry of the bulge test and the stress state that prevails in this test are very similar to the expanding thin wall sphere. These similarities may lead many users to confuse the interpretation of incremental change in the radius of the sphere as radial strain and consequently invalid analysis of the instability conditions. Therefore, in this study,...