Abstract
To manufacture a component with uniform deformation as well as homogeneous properties to fulfill the need of good consistency in service, both tool geometry and forming method were taken into account on the forming of double curvature shell. Experimental setups with planed and curved blank-holder surfaces combined with hydroforming process were performed on the evaluation of stain and thickness distribution compared with conventional deep drawing process. The average strain and its standard deviation on the formed shell were calculated as the indicators of whole strain level and strain uniformity. The results show that the most homogeneous strain, tensile strength, and micro-hardness can be achieved by the combination of hydroforming process and curved blank-holder surface.
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