Research on Dynamic Response Characteristics of 30SiMnCrMoVE Cylindrical Shells under Impact Loading

In order to obtain the response relationship of 30SiMnCrMoVE material for stamping extended range rocket engine shell during dynamic loading process, taking 30SiMnCrMoVE material as the research object, the effect of different impact energy on the cylindrical shells with different diameter to thickness ratios was studied, and the influence law of failure mode transformation of cylindrical shells was obtained. The results show that under the same impact energy condition, as the diameter to thickness ratio of the cylindrical shell increases, the axial shortening deformation also increases. Under the same wall thickness, the greater the impact energy, the greater the axial deformation of the cylindrical shell. LS-DYNA software was used to simulate the impact process of 30SiMnCrMoVE cylindrical shells, and the relationship between ultimate load and time was obtained. The variation trend of the simulated ultimate load is consistent with the experimental results.