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Open AccessArticle

Research on Lightweight Design and Indirect Hot Stamping Process of the New Ultra-High Strength Steel Seat Bracket

1
Key Laboratory of Automobile Materials, Department of Materials Science and Engineering, Jilin University, Changchun 130022, China
2
Roll Forging Research Institute, Jilin University, Changchun 130022, China
*
Author to whom correspondence should be addressed.
Metals 2019, 9(8), 833; https://doi.org/10.3390/met9080833
Received: 3 July 2019 / Revised: 24 July 2019 / Accepted: 25 July 2019 / Published: 26 July 2019
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Abstract

Aiming at the need for lightweight requirements of the electric bus components, combined with the performance advantages of the hot stamping ultra-high strength steel, a new type of seat bracket structure is proposed. The new structure was analyzed by finite element method and the variable density topology optimization results. Subsequently, the new seat bracket was manufactured by the indirect hot stamping process. The results showed that the new type of seat bracket can reduce the weight by 17.04% after topology optimization, which achieved the goal of lightweight design of the structure. After indirect hot stamping, the bottom of the seat bracket microstructures were mainly martensite and the ultimate tensile strength was about 1560 MPa, the microhardness was equally distributed at about 513.5 HV. Finally, according to the stiffness check test, the seat bracket satisfied the user requirements. View Full-Text
Keywords: seat bracket; ultra-high strength steel; variable density topology optimization; finite element analysis; indirect hot stamping seat bracket; ultra-high strength steel; variable density topology optimization; finite element analysis; indirect hot stamping
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Tang, Z.; Gu, Z.; Jia, L.; Li, X.; Zhu, L.; Xu, H.; Yu, G. Research on Lightweight Design and Indirect Hot Stamping Process of the New Ultra-High Strength Steel Seat Bracket. Metals 2019, 9, 833.

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