Advances in Manufacturing ›› 2024, Vol. 12 ›› Issue (3): 465-483.doi: 10.1007/s40436-024-00502-3

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A machine learning-based calibration method for strength simulation of self-piercing riveted joints

Yu-Xiang Ji1,2,3, Li Huang1,3, Qiu-Ren Chen1,3, Charles K. S. Moy2, Jing-Yi Zhang3, Xiao-Ya Hu4, Jian Wang4, Guo-Bi Tan3, Qing Liu1,3   

  1. 1. Key Laboratory for Light-weight Materials, Nanjing Tech University, Nanjing, 210009, People's Republic of China;
    2. Design School, Xi'an Jiaotong-Liverpool University, Suzhou, 215123, Jiangsu, People's Republic of China;
    3. Materials Bigdata and Applications Division, Materials Academy Jitri, Suzhou, 215131, Jiangsu, People's Republic of China;
    4. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, People's Republic of China
  • Received:2023-10-16 Revised:2023-11-26 Published:2024-09-07
  • Contact: Li Huang,E-mail:hli@jitri-amrd.com;Charles K.S.Moy,E-mail:cloo8000@uni.sydney.edu.au E-mail:hli@jitri-amrd.com;cloo8000@uni.sydney.edu.au
  • Supported by:
    This research was supported by the National Natural Science Foundation of China (Grant No. 52205377), the National Key Research and Development Program (Grant No. 2022YFB4601804), and the Key Basic Research Project of Suzhou (Grant Nos. SJC2022031, SJC2022029).

Abstract: This paper presents a new machine learning-based calibration framework for strength simulation models of self-piercing riveted (SPR) joints. Strength simulations were conducted through the integrated modeling of SPR joints from process to performance, while physical quasi-static tensile tests were performed on combinations of DP600 high-strength steel and 5754 aluminum alloy sheets under lap-shear loading conditions. A sensitivity study of the critical simulation parameters (e.g., friction coefficient and scaling factor) was conducted using the controlled variables method and Sobol sensitivity analysis for feature selection. Subsequently, machine-learning-based surrogate models were used to train and accurately represent the mapping between the detailed joint profile and its load-displacement curve. Calibration of the simulation model is defined as a dual-objective optimization task to minimize errors in key load displacement features between simulations and experiments. A multi-objective genetic algorithm (MOGA) was chosen for optimization. The three combinations of SPR joints illustrated the effectiveness of the proposed framework, and good agreement was achieved between the calibrated models and experiments.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-024-00502-3

Key words: Machine learning, Self-piercing riveting (SPR), Sensitivity analysis, Multi-objective optimization