Journal
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
Volume 92, Issue 5-8, Pages 1761-1768Publisher
SPRINGER LONDON LTD
DOI: 10.1007/s00170-017-0269-2
Keywords
Incremental sheet forming; Yield surface distortion; Ductile damage; Elastoplasticity; Numerical simulation
Funding
- National Natural Science Foundation of China [51605257, 51405266]
- Shandong Provincial Natural Science Foundation [ZR2016EEM25]
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The incremental sheet forming processes (ISF) are attracting lots of attentions due to their advantages on rapid prototyping, without special dies and short lead time. The numerical simulation can be a valid method to investigate the forming process and predict the defects. In this study, an extended fully coupled ductile damage model with mixed nonlinear hardening was used to simulate the ISF process. At the same time, the yield surface distortion was also considered in this model, which can enhance the capability of modeling metallic material behavior under complex loading paths. Afterwards, some simulations were conducted with the proposed model. Additionally, one tension-shear orthogonal loading test was assigned on the one representative element in order to investigate the loading path effect during ISF process. By comparing the equivalent plastic strain and ductile damage evolution of the blank, the influence of the yield surface distortion on the ISF process was proved.
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