Non-contact Explosion Dynamic Response Analyzing of Vessel Electric Station Structure

For evaluating the anti-impact ability of vessel electric station, the numerical simulation of air explosion to entire structure was done by fluid-structure coupling algorithm in LS-DYNA software. Non-contact explosive load was added omni directionally by sphere loading method. Based on simulating results, the weakness position was founded and the structure dynamic response curves were created. Furthermore the weakness of structure was improved. The numerical calculation results showed that: this method can simulate the shockwave transmitting procedure well and evaluate structure anti-impact ability efficiently. The calculating results can also provide input conditions for electric station additional equipments anti-impact calculating. The simulating study method has some reference value to anti-impact design of vessel equipments.