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<p>This paper proposes an uncertainty parameter updating approach combining a hybrid reliability model and a digital twin to establish a reliability digital twin framework. First, a new global-local algorithm is used to obtain the hybrid reliability index as part of the reliability assessment. The accuracy and robustness of the hybrid reliability index solution is verified by examples. Then, the strength, modulus of elasticity, and strain uncertainties are described and verified through tensile testing of standard samples of carbon fiber-reinforced composites (CFRCs). Finally, the reliability digital twin updating process (RDTUP) framework is established by utilizing the hybrid reliability index robust solving algorithm and the uncertainty parameter updating method. The reliability digital twin experiment verifies the rationality and correctness of the proposed framework. Thus, the RDTUP framework accurately predicts and methodically evaluates the data collected, processed, and generated in both the hybrid reliability model and the digital twin.</p>

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A robust hybrid reliability index solution approach for a novel reliability digital twin updating process framework of composite structures

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • Xiaojun Ding,
  • Ling Zhou,
  • Jiale Zuo,
  • Donglin Wu,
  • Xingqi Li,
  • Xuechen Liu,
  • Xiaoshu He,
  • Xinqian Zheng

摘要

This paper proposes an uncertainty parameter updating approach combining a hybrid reliability model and a digital twin to establish a reliability digital twin framework. First, a new global-local algorithm is used to obtain the hybrid reliability index as part of the reliability assessment. The accuracy and robustness of the hybrid reliability index solution is verified by examples. Then, the strength, modulus of elasticity, and strain uncertainties are described and verified through tensile testing of standard samples of carbon fiber-reinforced composites (CFRCs). Finally, the reliability digital twin updating process (RDTUP) framework is established by utilizing the hybrid reliability index robust solving algorithm and the uncertainty parameter updating method. The reliability digital twin experiment verifies the rationality and correctness of the proposed framework. Thus, the RDTUP framework accurately predicts and methodically evaluates the data collected, processed, and generated in both the hybrid reliability model and the digital twin.