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To address the challenges of multi-physical field integration (thermal, mechanical, and gaseous) control in superplastic forming (SPF) processes while enhancing the forming quality, production efficiency, and product consistency of complex thin-walled components, this study developed a digital twin (DT) system through synergistic integration of material science, process engineering, and cyber-physical technologies. Key technologies including physical model of SPF production unit, DT modeling based on technological process, process database, data visualization and performance prediction of formed parts based on surrogate model are studied. Finally, the experimental validation was carried out on the self-developed SPF equipment, and the whole forming process of high-speed train window parts was completed, realizing the visual monitoring and control of SPF equipment and process. It establishes a methodological framework to realize the digitalization, automation and intelligence of SPF process.

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Design of Digital Twin System for Superplastic Forming Equipment Based on Process Database Model

  • 会议论文

  • 发表日期：

    2026年

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  • Muqi Sun,
  • Chengyue Xiong,
  • Aoming Yuan,
  • Dongxuan Sun,
  • Anan Wu,
  • Xicheng Zhang,
  • Tiancheng Li,
  • Yongbing Li,
  • Yun Chen,
  • Qi Wang,
  • Wanran Yang,
  • Ming Yang

摘要

To address the challenges of multi-physical field integration (thermal, mechanical, and gaseous) control in superplastic forming (SPF) processes while enhancing the forming quality, production efficiency, and product consistency of complex thin-walled components, this study developed a digital twin (DT) system through synergistic integration of material science, process engineering, and cyber-physical technologies. Key technologies including physical model of SPF production unit, DT modeling based on technological process, process database, data visualization and performance prediction of formed parts based on surrogate model are studied. Finally, the experimental validation was carried out on the self-developed SPF equipment, and the whole forming process of high-speed train window parts was completed, realizing the visual monitoring and control of SPF equipment and process. It establishes a methodological framework to realize the digitalization, automation and intelligence of SPF process.