Research on the theory of interaction between shipboard equipment and foundation under shock condition

The shock response of shipboard equipment under Underwater Explosion (UNDEX) is directly affects the combat capability of ship. In order to accurately predict the dynamic response of shipboard equipment under UNDEX, based on transfer function and wave theory, the transfer of explosive shock loads in the hull structure was studied. By comparing the similarities and differences between structural shock and vibration, combining with the equipment shock test data, based on the mechanical impedance theory, a shock impedance theory suitable for explosion shock conditions was proposed. Based on this theory, the dynamic response of shipboard equipment under UNDEX was predicted and compared with the relevant standard data. The results show that the method is in good agreement with the experimental data. The method in this paper gives the theory of load transfer in the hull structure and the interaction between the equipment and its installation foundation, which provides a theoretical basis for the shock resistance of shipboard equipment.