CAJ | 학술논문

基于声-固耦合算法分析含有液体的储液容器固有特性。将计算域分为液体区域和固体区域两部分，利用声学单元模拟液体，液体表面设置为自由液面条件，利用板壳单元模拟固体结构，流-固分界面使用绑定约束处理。分析了储液容器的干模态、预应力模态、湿模态等共4种工况。计算结果表明，预应力的作用使容器固有频率有增大的趋势，而液体的惯性效应使得容器固有频率明显下降，且惯性效应的影响明显大于预应力的影响，前者的影响可以忽略。
기우성-고우합산법분석함유액체적저액용기고유특성。장계산역분위액체구역화고체구역량부분，이용성학단원모의액체，액체표면설치위자유액면조건，이용판각단원모의고체결구，류-고분계면사용방정약속처리。분석료저액용기적간모태、예응력모태、습모태등공4충공황。계산결과표명，예응력적작용사용기고유빈솔유증대적추세，이액체적관성효응사득용기고유빈솔명현하강，차관성효응적영향명현대우예응력적영향，전자적영향가이홀략。
Wet mode of liquid storage containers was analyzed based on acoustic-structure coupling meth-od. The computational domain was divided into liquid domain which was simulated by acoustic element and solid domain which was simulated by shell element. The freedoms of interface elements were tied. Dry mode,wet mode and prestressed mode of liquid storage containers were simulated. Through analysis of cal-culation results,natural frequency has a trend of increase by prestress effect,which decreased obviously by inertial effect. The influence of prestress effect can be neglected.