Left-Side of the Forming Limit Diagram (FLD) under Superimposed Double-Sided Pressure

Jian Guang Liu; Qing Yuan Meng

doi:10.4028/www.scientific.net/AMR.472-475.653

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 472-475Left-Side of the Forming Limit Diagram (FLD) under...

Left-Side of the Forming Limit Diagram (FLD) under Superimposed Double-Sided Pressure

Abstract:

Over the past decades, many kinds of double-sided pressure forming processes have been proposed to improve the formability of lightweight materials which exhibit distinctly poor forming capability. In the present study, the effects of double-sided pressure on the deformation behavior of AA5052-O aluminum alloy sheet metal under tension-compression deformation state are studied numerically using the finite element method based on the Gurson damage model. It is demonstrated that superimposed double-sided pressure significantly increases the left-side of the forming limit diagram and the formability increase value is sensitive to the strain path.