Research on Local Structure Plastic Damage of Cylindrical Shell under Near-field Underwater Explosion

Abstract The local structure of the cylindrical shell produces plastic deformation under near-field underwater explosion load, based on fact that ring rib is strong support reinforced plate, this paper simplifies model into a rigid slatted beam at both ends, and lists equations beams action shock wave bubble pulsation load. This equation takes initial damage caused by account, compares calculation results obtained theoretical method with experimental data, which verifies correctness mechanical model. At same time, it explained can better predict explosion.