CAJ | 학술논문

采用薄壁梁有限元法结合边界元法计算水中船体薄壁结构的振动声辐射响应。文中用一维薄壁梁有限元模拟结构，在横剖面处用二维边界元方法计算流体附加载荷，计算了结构振动模态与响应，用三维边界元方法计算了结构辐射声场。通过与采用ANSYS软件计算得到的振动响应以及SYSNOISE软件计算得到的辐射声场相比较，验证了文中方法的可行性。
채용박벽량유한원법결합변계원법계산수중선체박벽결구적진동성복사향응。문중용일유박벽량유한원모의결구，재횡부면처용이유변계원방법계산류체부가재하，계산료결구진동모태여향응，용삼유변계원방법계산료결구복사성장。통과여채용ANSYS연건계산득도적진동향응이급SYSNOISE연건계산득도적복사성장상비교，험증료문중방법적가행성。
A coupled finite element-boundary element method of the thin-walled beam is presented to ana-lyze the vibration response and acoustic radiation of the thin-walled ship girder. A one-dimensional thin-walled beam element is used to simulate the structure. The two-dimensional acoustics boundary element method is employed to account for the acoustic load. Modal analysis and response analysis are studied. Then the structural acoustic radiation is easy to get using the three-dimensional boundary element method. To val-idate the present method, a computer code is developed for the analysis and the numerical results are veri-fied by comparing with the results obtained with ANSYS analysis and SYSNOISE analysis. The comparison of the results indicates feasibility of the proposed method.