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 Shaojuan Su,Yujie Wu,Guohui Wang,et al.Optimal Calibration of Q235B Steel Johnson-Cook Model Parameters Based on Global Response Surface Algorithm[J].Journal of Marine Science and Application,2024,(2):470-478.[doi:10.1007/s11804-024-00414-5]
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Optimal Calibration of Q235B Steel Johnson-Cook Model Parameters Based on Global Response Surface Algorithm


Optimal Calibration of Q235B Steel Johnson-Cook Model Parameters Based on Global Response Surface Algorithm
Shaojuan Su1 Yujie Wu1 Guohui Wang1 Zhe Miao1 Yeping Xiong2 Fangxin Guo3 Haibo Liu4
Shaojuan Su1 Yujie Wu1 Guohui Wang1 Zhe Miao1 Yeping Xiong2 Fangxin Guo3 Haibo Liu4
1 Naval Architecture and Ocean Engineering College, Dalian Maritime University, 116026 Dalian, Liaoning, China;
2 Faculty of Engineering and Physical Sciences, University of Southampton, Boldrewood Innovation Campus, SO16 7QF Southampton, UK;
3 Dalian Hengxing Marine Engineering Design Co., Ltd 4 Bureau of Geophysical Prospecting (BGP), China National Petroleum Corporation (CNPC)
Q235B|Mechanical property test|Numerical simulation|Johnson cook model|Global response surface algorithm
This study investigates the mechanical properties of Q235B steel through quasi-static tests at both room temperature and elevated temperature. The initial values of the Johnson-Cook model parameters are determined using a fitting method. The global response surface algorithm is employed to optimize and calibrate the Johnson-Cook model parameters for Q235B steel under both room temperature and elevated temperature conditions. A simulation model is established at room temperature, and the simulated mechanical performance curves for displacement and stress are monitored. Multiple optimization algorithms are applied to optimize and calibrate the model parameters at room temperature. The global response surface algorithm is identified as the most suitable algorithm for this optimization problem. Sensitivity analysis is conducted to explore the impact of model parameters on the objective function. The analysis indicates that the optimized material model better fits the experimental values, aligning more closely with the actual test results of material strain mechanisms over a wide temperature range.


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Received date: 2023-06-13;Accepted date: 2023-08-04。
Corresponding author: Shaojuan Su,E-mail:ssjlpz@dlmu.edu.cn
Last Update: 2024-05-28