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Investigation on the Punching Quality of Hybrid Impact Hydroforming
Abstract:
High energy forming technology has been widely applied in the aircraft and automobile area which means high energy works in very short time, no more than 1s. The innovative hybrid impact hydro-forming (IHF) technology is a kind of high energy forming technique. It combines hydroforming and high energy forming, which first use hydro-forming to shape large character of product, then use high energy to form small features, such as convex tables, bars etc. The present work investigates the shock wave generation of hybrid impact hydroforming. In this paper, the theory of shock wave is presented and finite element simulation was carried out by using MSC. The pressure distribution changes in the depth direction, but not in the width direction. Using this shock wave loading condition we did forming experiments. Punching occurred as a result of combined tensile and shear stress effects. Furthermore, the design precise of die and clearance between punch and die may less strict. Therefore, the research is very useful for the development and application of hybrid impact hydroforming.
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Pages:
520-523
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Online since:
August 2014
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