Abstract
The design of pressure hull structures plays an essential role in the research and development of underwater operation equipment such as deep-sea submersibles. As a bionic structure, an egg-shaped shell has apparent advantages in the application of an underwater pressure hull. Still, the egg-shaped shell is a positive Gauss surface, so it is difficult to control the manufacturing accuracy and quality. In this paper, the technology of solid particle flexible medium forming and the principle of high-pressure bulging in tubes is proposed to manufacture high-precision egg-shaped shell parts. By optimizing the shape of the punch structure, optimizing the process parameters, improving the stress and strain distribution of the egg-shaped shell, and analyzing the deformation mechanism in the bulging process, we have mastered the deformation and quality control methods of the granular medium flexible bulging of non-equal curvature tubular structures in some aspects.
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Funding
All the experiments were financed and supported by the pre-research fund project about industry-university research in Zhangjiagang City (2021ZJG157J) and the project about industry-university research provided by Jiangsu Province (BY2021286).
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Huang, J., Sun, Z., Shi, Z. et al. Research on the deformation mechanism of egg-shaped shells in granular medium bulging. Int J Adv Manuf Technol 124, 497–509 (2023). https://doi.org/10.1007/s00170-022-10395-w
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DOI: https://doi.org/10.1007/s00170-022-10395-w