Research on the Deformation Area Materials’ Stress and Contour Surface’s Forming Mechanism of Closed Extruding Fine-Blanking

Abstract:

It analyzed the influence on parts’ shear surface quality by the stress and strain in the deformation area of materials. The analysis shows that the continuum linear rigid-plastic model and the fracture failure criterion in the light of damage factor, which is based on the microcosmic structure, and can accurately simulate the closed extruding fine-blanking processing; and that the higher the filling rate of outer ring is, the larger pressure stress are the deformation materials under; also that the greater the compressive stress of deformation area materials is, the higher does the deformation limit, the time of materials’ crack is delayed.

• Periodical: Advanced Materials Research (Volumes 189-193)
• Pages: 4271-4275
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.189-193.4271
• Online since: February 2011
• Authors: Ming Deng, Lin Lv, Yu Qin Wu
• Keywords: Blanking, Ductile Fracture, Fine Blanking, Hydrostatic Stress, Precision Forming

References

[1] Lee T C, Chen L C, Zheng P-F. Application of the finite element deformation method in the fine -blanking process[J]. Journal of Materials Producing Technology, 1997, 63 (1-3): 744-749.

DOI: 10.1016/s0924-0136(96)02717-3

[2] Gurson A L. 1977. Continuum theory of ductile rupture by void nucleation and growth: Part 1- Yield criteria and flow rules for porous ductile media, J Eng Mat Techno, 99: 2-15.

DOI: 10.2172/7351470