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<p>Composite protective structures (CPS) are crucial for the safe operation of spacecraft in orbit. Hypervelocity impacts from space debris are a major cause of fragmentation. This study focuses on predicting the impact performance of the CPS during the design process. A coupling theory that combines smoothed particle hydrodynamics (SPH) with the finite element method (FEM) is proposed. The impact performance can be evaluated efficiently by the projectile energy curve. The accuracy of this method is validated through an aluminum plate multi-shock shield test. The basalt braided fabric and the braid filled Whipple CPS model are also investigated for performance prediction. The proposed method uses debris cloud diffusion and projectile energy curves to calculate the impact performance of the structure. The results show that the proposed method achieves SPH-FEM coupling successfully and improves the computational efficiency. It is suitable for calculating the impact performance of braid filled CPS under hypervelocity impact conditions.</p>

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Prediction of hypervelocity impact performance of composite protective structures using a combined finite element method and smoothed particle hydrodynamics approaches

  • 期刊论文

  • 发表日期：

    2025年1月30日

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  • Yusheng Wang,
  • Qiyu Li,
  • Yu Xu,
  • Jiafu Zhou,
  • Yanjie Li,
  • Dahai Zhang,
  • Qinghua Liu,
  • Dong Jiang

摘要

Composite protective structures (CPS) are crucial for the safe operation of spacecraft in orbit. Hypervelocity impacts from space debris are a major cause of fragmentation. This study focuses on predicting the impact performance of the CPS during the design process. A coupling theory that combines smoothed particle hydrodynamics (SPH) with the finite element method (FEM) is proposed. The impact performance can be evaluated efficiently by the projectile energy curve. The accuracy of this method is validated through an aluminum plate multi-shock shield test. The basalt braided fabric and the braid filled Whipple CPS model are also investigated for performance prediction. The proposed method uses debris cloud diffusion and projectile energy curves to calculate the impact performance of the structure. The results show that the proposed method achieves SPH-FEM coupling successfully and improves the computational efficiency. It is suitable for calculating the impact performance of braid filled CPS under hypervelocity impact conditions.