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Identification of material parameters for springback predictionusing cyclic tensioncompression test |
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| รหัสดีโอไอ | |
| Creator | 1. Thaweesak Phongsai 2. Weerapong Julsri 3. Bunyong Chongthairungruang 4. Surasak Suranuntchai 5. Suwat Jirathearanat 6. Vitoon Uthaisangsuk |
| Title | Identification of material parameters for springback predictionusing cyclic tensioncompression test |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2559 |
| Journal Title | Songklanakarin Journal of Science and Technology (SJST) |
| Journal Vol. | 38 |
| Journal No. | 5 |
| Page no. | 485-493 |
| Keyword | high strength steel,springback,Yoshida-Uemori model,material parameters |
| ISSN | 0125-3395 |
| Abstract | In sheet metal forming process, springback is a critical problem for die makers, particularly in case of advanced highstrength steels. Therefore, FE simulations were often used to calculate materials deformation behavior and the springbackoccurrence of formed sheet metals. Recently, the YoshidaUemori model, a kinematic hardening model, has shown greatcapability for describing the elastic recovery of a material. Nevertheless, determination of model parameters is sophisticatedfor industrial applications. In this work, an AHS steel grade JIS JSC780Y was investigated, in which tensioncompressiontests were carried out and the procedure of parameter identification was analyzed. Different fitting methods were examinedand verified by evaluation of cyclic stressstrain responses obtained from simulations of 1element model and experiments.The most appropriate parameter set was determined. Finally, hat shape forming test was performed and springback obtainedby calculation and experiment was compared. It was found that the introduced procedure could be acceptably applied. |
