Original scientific paper

https://doi.org/10.21278/TOF.484063324

Temperature Dependence of Meso Constitutive Parameters for Advanced High-Strength Steel

Dongze Wu ; School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo, China
Di Li ; School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo, China *
Xingfeng Liu ; School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo, China
Yukuan Li ; School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo, China
Yiqun Wang ; School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo, China
Shaoxun Liu ; Rongcheng Compaks New Energy Automobile Co., Ltd, Rongcheng, China

* Corresponding author.

Abstract

Temperature significantly influences the fracture toughness of dual-phase steel, with internal void damage closely linked to sheet metal fracture. Microstructural damage models are vital for studying material failure, and precise calibration of their parameters is crucial for numerical analysis reliability. This paper focuses on accurately calibrating these parameters using a combination of experimental and numerical simulations based on the Hill'48-Gurson-Tvergaard-Needleman (GTN) model. Employing a central composite experimental design, response surface methodology, and genetic algorithms, the study determines relevant damage parameters for dual-phase steel at different temperatures. The research carefully analyses the evolution patterns of damage parameters concerning sheet metal and corresponding temperatures. The study contributes to understanding damage parameter evolution patterns, offering a predictive method for dual-phase steel sheet damage parameters across varying temperature conditions.

Keywords

advanced high-strength steel; meso-damage model; response surface methodology; temperature dependence

Hrčak ID:

321644

URI

https://hrcak.srce.hr/321644

Publication date:

20.10.2024.

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