Numerical analysis for the expansion of debris cloud induced by oblique hypervelocity impact

It is necessary to gain an insight into the debris cloud caused by oblique hypervelocity for the design of spacecraft shield. In this paper, SPH method was employed for this purpose to numerically study the hypervelocity oblique impact on the thin plates. The program of particle one-per-h modeling for SPH is designed to facilitate the data processing, and a program of statistical algorithm for debris cloud parameters in SPH was also suggested. The debris cloud parameters can be predicted accurately. The results of SPH simulation have good agreement with experiments. The empirical relations among the debris cloud parameters and the impact parameters were established, such as velocity, angle of obliquity and bumper plate thickness.