Abstract
The shock wave generated by underwater explosion is an important cause of damage to surface ships. The dynamic response and damage modes of ship structure subjected to underwater explosive loading are studied to improve the ship survivability. Theoretical method is used to analyze the strains at the boundary and center of clamped square plate during its deformation, which is caused by underwater explosive loading. In addition, the finite element simulation method is used to research the dynamic damage of clamped square plate subjected to underwater explosive loading at different explosion distances. It is found that the fracture mode is closely related to the explosion distance: the shock wave reaches the center and boundary of fixed square plate nearly at the same time in the case of far field underwater explosion, which causes the boundary of fixed square plate broken firstly; the shock wave reaches the center of square plate before it reaches its boundary, which only occurres in near-field or even contact explosion, and the clamped square plate would be broken at its center firstly. The results prove that the critical fracture pressure of clamped square plate is directly related to its geometrical sizes and the distance between the explosive and the plate.
| Translated title of the contribution | Dynamic Damage Mode of Clamped Square Plates Subjected to Underwater Explosive Loading |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 111-119 |
| Number of pages | 9 |
| Journal | Binggong Xuebao/Acta Armamentarii |
| Volume | 41 |
| DOIs | |
| Publication status | Published - Jun 2020 |