A Study on the Damping Charactors in the Dynamic Structual Responce in Ships

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It is very important to estimate the the damping charactors of the structures, in order to analyze exactly the dynamic strucural responce, for example the vibration, the collison and the bow flare damages by wave impact loads etc. In this research, frame-structure models were impacted by impact hammer, and the relations between their damping characters and vibration modes or frequencies were obtained. Then the system to calculate the impact responce was developed, constructing a proportinal damping model into the equations of motion for Euler Beam. Using the damping charactos obtained, the simulation results for impact responce, were agreed with experimantal ones very well