Affiliation:
1. Amirkabir University of Technology
Abstract
Abstract
Analytical prediction of forming limits under generalized non-planar stress state in processes such as hydroforming and incremental forming was topic of several investigations; however, limited evaluating experimental methods were mentioned. In this paper, hydro-assisted incremental forming (HAIF) is introduced as a hybrid process of incremental forming and hydromechanical deep drawing with enhanced formability resulted of simultaneous exertion of normal and through thickness stresses. A test method is invented based on this process and experimental and finite element assessment of forming limits are executed. Previous analytical forming limit curves predicted by the present authors are evaluated using experimental tests and finite element simulations and good compatibility is observed. It is again confirmed that application of normal and through thickness stresses enhance formability in all strain paths specially in plane strain mode.
Publisher
Research Square Platform LLC
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