Research on Time Frequency Combined Shock Resistance Design Analysis Based on the Modal Synthesis Method
The damage caused by non-contact underwater explosion is one of severe problems for large ship equipment.In this paper,a time-frequency analysis method for impact resistant design based on the modal synthesis method is proposed.The dynamic model of the condensed large ship equipment is established by the modal synthesis method.According to the time domain simulation method and the spring-damping model,the impact loads in time domain under the flexible boundary are obtained by numerical simulation.Through the simulation and the coordinate transformation relationship,the impact response at the weak link of the substructure is extracted,and the impact resistant design conclusion and improvement suggestions of the large ship equipment under the flexible boundary are given.
modal synthesis methodimpact resistant designthe large ship equipment
万方数据
维普
