CAJ | 학술논문

计算船舶与海洋平台上设置的液舱振动模态影响时，舱内液体附加质量对总体振动有较大影响，为了研究其振动特性，将该耦合系统简化为充液箱体的振动，基于流固耦合理论，运用有限元软件ADINA建立有限元模型并进行数值计算。采用LMS结构模态分析系统进行实验研究，对比分析了不同充液高度下的振动低阶固有频率和振型。仿真结果与实验测量结果吻合较好，验证了仿真方法的有效性，所获结果和方法可为流固耦合方面研究提供参考。
계산선박여해양평태상설치적액창진동모태영향시，창내액체부가질량대총체진동유교대영향，위료연구기진동특성，장해우합계통간화위충액상체적진동，기우류고우합이론，운용유한원연건ADINA건립유한원모형병진행수치계산。채용LMS결구모태분석계통진행실험연구，대비분석료불동충액고도하적진동저계고유빈솔화진형。방진결과여실험측량결과문합교호，험증료방진방법적유효성，소획결과화방법가위류고우합방면연구제공삼고。
The liquid tanks are installed in ships or offshore platforms, the impact of liquid medium in the liquid tanks on vibration performances of the hull should not be overlooked . The paper developed a finite element mathematical model of fluid-structure interaction ( FSI) with the steel tank .The FSI dynamics in different liquid heights in liquid tanks were nu-merically simulated and analyzed by the FEM software ADI-NA.By adopting LMS structural mode analysis system , the paper compared inherent frequencies and modes of low-fre-quency-vibration.Simulation results are in good agreement with the experimental ones , which verifies the effectiveness of the simulation method .The findings and methods can be ref-erence for fluid structure interaction .