Vibration Analysis of a Bottom Plate of a Narrow Tank

Abstract

This paper focuses on the method of vibration analysis of a wetted bottom structure of a narrow tank in ships. The natural frequencies of a simply supported bottom panel are analyzed by means of analytical energy method, boundary element and finite element techniques. Comparing the results, the numerical accuracy of the natural frequencies depending on the methods and mesh sizes has been investigated. The vibratory responses of the bottom panel are also analyzed in the case where the tank is enforced to vibrate in vertical direction with given acceleration.