Transactions of Materials and Heat Treatment

Title：Study on thickness distribution after hot stamping with ultra high strength steel in Audi car B column

Authors： Shan Yun

Unit： Wuxi Institute of Technology

KeyWords： ultra-high strength steel hot stamping finite element simulation

ClassificationCode：O644

year,vol(issue):pagenumber：2015,40(2):22-25

Abstract：

Based on the issue of hot stamping for car B column from benchmark problem BM3 module of the numisheet 2008 standard examination questions, the model of hot stamping Audi car B column was established, and the process of the hot stamping was analyzed. Three typical sections on B column (P1, P2, P3) were simulated by the finite element software, the thickness distribution of the three sections was mainly studied, and finally the results were compared with experiments. It is shown that the thickness distribution of B pillar maintains almost uniform after hot stamping, except the phenomenon of thickening mutation in the local place of the tail. The thickness on section P1 is in symmetric distribution with the peak in the middle; on P2 section, the thickness is also in symmetrical distribution but along the cross section line increases first and then decreases; the bigger thickness changing is along the direction of 3a on P3 section, and the changing along that of 3b on P3 section is gently. In short, all the results in simulation have a good consistent with the experiments.

Funds：

国家自然科学基金资助项目（5075102）

单云（1971-），女，硕士，副教授

Reference：

［1］Bariani P F, Bruschi S, Ghiottia A, et al. Testing formability in the hot stamping of HSS [J]. Manufacturing Technology，2008, 57: 265-268.
［2］Naderi M, Uthaisangsuk V, Prahl U, et al. A numerical and experimental investigation into hot stamping of boron alloyed heat treated steels [J]. Steel Research International, 2008, 79(2): 77-84.
［3］Cavaliere P. Hot and warm forming of 2618 aluminium alloy[J]. Journal of Light Metals, 2002, 81(3): 247-252.
［4］王立影. 超高强度钢板热冲压成形技术研究[D]. 上海: 同济大学, 2008.Wang L Y. The Research on Hot Stamping Technology with the Ultra High Strength Steel[D]. Shanghai: Tongji University, 2008.
［5］Oberpriller B, Burkhardt L, Griesbach B. Benchmark3-continuous press hardening [A]. Proceedings of the 7th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes[C].Interlaken, witzerland,2008.
［6］谷诤巍, 姜超, 单忠德, 等. 超高强度钢板冲压件热成形工艺[J]. 汽车工艺与材料, 2009， (4): 15-17.Gu Z W, Jiang C, Shan Z D, et al. Ultra high strength steel hot forming process[J]. Automobile Technology & Material, 2009, (4): 15-17.
［7］Geiger M, Merklein M, Hoff C. Basic investigations on the hot stamping steel 22MnB5 [J]. Advanced Materials Research, 2005，(6-8):795-802.
［8］Hoffmann H, So H, Steinbeiss H. Design of hot stamping tools with cooling system [J]. CIRP Annals-Manufacturing Technology, 2007,56(10):269-272.
［9］Hyunwoo So, Hartnut Hoffmann. Design of hot stamping tools and blanking strategies of ultra high strength steels [J]. Springer Proceedings in Physics，2008,124:315-325.
［10］Mori K, Maki S, Tanaka Y. Warm and hot stamping of ultra high tensile strength steel sheets using resistance heating[J]. CIRP Annals-Manufacturing Technology, 2005, 54(1): 209-212.
［11］Aylan T. Hot-stamping boron-alloyed steels for automotive parts [J]. Stamping Journal,2006, 39(4):40-41.

Service：

【This site has not yet opened Download Service】【Add Favorite】