Biodynamic Response and Injury Estimation of Ship Personnel to Ship Shock Motion Induced by Underwater Explosions

摘要

The nonlinear lumped parameter models that can simulate the dynamic responses of the standing postured and seating postured personnel to vertical shock excitation have been set up or modified based on the results of dynamic strength experiments of human bones. To predict the injury possibility of shipboard personnel to vertical ship shock motion induced by underwater explosion, we put forward to the shock injury criterion of human body based on the experimental data. Also, we did an experiment on the in vivo dynamic response measurement of real human body to vertical shock excitation. The experimental results agree well with that of theoretical analysis based on the nonlinear lumped parameter models. Combining with the 2nd DAA method, we obtained a system analytical mode which can predict the time-domain dynamic motion responses, load responses and injury estimation of standing postured and seating postured shipboard personnel at the given locations on the given underwater explosion parameters (charge weight, charge distance and direction). The system models will provide the theoretical guidance for the ship safety design of personnel protection.