Random Analysis of Rolling Equation of Motion of Ships Based on Moment Equation Method

J. Ocean Eng. Technol. 1992;6(2):41-45.

모멘트 방정식 방법에 의한 횡요 운동 방정식의 램덤 해석

배준홍,권순홍,하동대

부산대학교 조선공학과,부산대학교 조선공학과,부산대학교 조선공학과

Keywords: Moment Equation Method, Random AnalysisRolling Equation of Motion, Shaping Filter, Non stationary Response

핵심용어: 모멘트 방정식 방법, 랜덤해석, 횡요 운동방정식, 형상필터, 비정상응답

Abstract

In this paper an application technique of moment equation method to solution of nonlinear rolling equation of motion of ships is investigated. The exciting moment in the equation of rolling motion of ships is described as non-white noise. This non-white exciting moment is generated through use of a shaping filter. These coupled equations are used to generate moment equations. The nonstationary responses of the nonlinear system are obtained. The results are compared with those of a linear system.