Transactions of Materials and Heat Treatment

Title：Numerical simulation for thickness thinning of deformation zone on hole-flanging by incremental forming

Authors： Cao Yu Gao Jinzhang Jia Lili

Unit： Southeast University Nanjing Communications Institute of Technology

KeyWords： incremental forming hole-flanging numerical simulation thickness thinning

ClassificationCode：TG376.9

year,vol(issue):pagenumber：2015,40(2):52-59

Abstract：

Finite element model was established based on software Dynaform. Thickness thinning of deformation zone on hole-flanging by incremental forming was studied. In order to establish the judgment standard of thickness thinning, theoretical calculation formula of the minimum thickness was put forward and its credibility was verified. Causes of thickness thinning of deformation zone were analyzed and the feasibility of avoiding thickness thinning by multi-stage forming was studied. The results indicate that the smaller value of K and the larger value of forming force, which makes the middle area of flange walls undergo biaxial stretching conditions and leads to thickness thinning. Hole-flanging by multi-stage path incremental forming which is designed based on reducing the forming force can avoid thickness thinning effectively.

Funds：

先进数控技术江苏省高校重点建设实验室基金开放项目（KXJ05017）

曹宇（1990-），男，硕士研究生高锦张（1963-），男，硕士，副教授

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