An Investigation of Emprieal Formula of Ship Hull Vibration Using Data-Base

Abstract

This paper presents newly developed database system of ship hull vibration and its application. By using statistical analysis programs of this system, empirical formulas can be generated successfully from experimental data-base. Some empirical formula concerning ship's rigidity for vibration analysis, 2-node vertical and horizontal natural frequency, damping factor and added mass were derived from this data-base, Well-known existing formulas were reviewed and compared with those obtained by this study. These results will give ship designers useful information. Moreover, future design method for vibration were discussed. This type of data-base will play an important role in vibration design of ship.