计及弹性支撑效应的独立液舱晃荡数值分析研究

摘要

The independent tank is selected to investigate the sloshing characteristics with the elastic support.A coupled algorithmis proposed involving the Hilber-Hughes-Taylor implicit method for tank motion and the VOF method for liquid sloshing.By conducting coupled calculation and comparing these numerical results with those obtained by ignoring the elastic impact,the connection between the stiffness of the elastic support and the liquid motion as well as the sloshing load is analyzed.An efficient and effective method is finally presented for predicting the sloshing load of independent tank considering the elastic support effect.%文章针对弹性支撑结构作用下的液舱晃荡问题,采用基于Hilber-Hughes-Taylor (HHT)格式的隐式直接积分法求解液舱运动,应用VOF法求解流体晃荡,并结合部分单元参数的概念处理棱形液舱边界,建立了液舱运动与流体晃荡双向耦合迭代算法.以独立液舱为研究对象,通过耦合求解弹性支撑液舱晃荡,并与非弹性支撑液舱晃荡进行比较,分析了在不同刚度的弹性支撑结构作用下液舱液体运动及晃荡载荷的变化规律.该文建立的分析方法为含弹性支撑的独立液舱晃荡载荷预报提供了一种快速、有效的分析手段.