Numerical Simulation of Axial Compressive Bulging Process for T-tube
The axial compressive bulging process of T-tube was simulated based on the software ABAQUS. The influence of internal pressure and axial feeding on the tube forming quality was analyzed. The research results show that: when the amount of feed is certain, the height of branch increases slowly with the increase of internal pressure, but the minimum wall thickness is significantly thinner; when the internal pressure is certain, the branch height increases rapidly with the increase of the amount of axial feed, at the same time the wall thickness difference is also rapidly increasing; when the initial position of upper punch is 6mm and friction coefficient is 0.1, and the internal pressure is 90MPa; when the amount of axial feed is 13.5mm,the properties of formed T-tube are the best.