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Hydro-forming can effectively solve the forming problem of complicated components. Aiming at the difficulty of stamping problem and poor forming quality for an aerospace deployable structure with ripple characteristics, hydro forming process is designed by analyzing deformation and defects. Combined with numerical simulation, defects of punch round corner region during hydro-forming are studied. Cavity pressure loading path, blank holder gap, corrugated quantity and depth are also optimized. The results show in the process the punch round corner is the weakest region, wrinkles will particular appeared in the blank holder zone. The corrugated quantity is in inverse proportion to the corrugated depth. In this paper, the finite Element Analysis model of corrugated quantity and depth is presented and calculated by the Dynaform program. This work is of directive significance to the optimal design and operation of ripple plate forming.

Deformation and Defects in Hydroforming of Stainless Steel Ripple Plate with Controllable Corrugated Quantity and Depth