The numerical simulation and mechanics analysis for deep-draw thermo-rheological forming of one Ti alloy rectification internal hood

The problem of quality controlling for thin plate deep-drawing thermal forming is a complex one, the mechanics analysis of which concerns a lot of factors such as the pressure-pad-force of mould, friction, forming rate, temperature, lubrication, and even the skillfulness of operators. It is difficult for exactly avoiding-these quality problems, as drawing splitting, wrinkling and so on to rely only on the mechanics analysis. In this paper, taking TCI titanium alloy rectifier internal hood deep-drawing thermo-rheological forming as an actual example, contra-positive to the main factors of the pressure-pad-farce, forming rate and so on, the research is carried out combining mechanics calculation and the numerical simulation in computer so as to avoid efficiently the invalidation phenomena of drawing splitting, wrinkling in production.