Sloshing is associated with the structural safety of liquid storage vessel. Installing the baffles inside the containers would be beneficial for the mitigating the damage due to the severe sloshing. In this study, an innovative type of double-side curved baffle was proposed to evaluate its effect on reducing sloshing in a rectangular tank under surge and pitch excitation. For comparison with conventional baffles, effects of the vertical baffle and the T-type baffle on mitigating sloshing were also studied experimentally and numerically by analyzing the free surface wave elevation as well as the hydrodynamic pressure on the tank wall. The effective stress at the double-side curved baffle along the height direction of the baffle is much smaller than that at the T-type baffle although they have the same mitigation effect on sloshing wave heights. The sloshing-induced effective stress on the double-side curved baffles was analyzed by varying their radian. Findings show that the effective stress on the baffle tends to decrease with the increase in the radian. The velocity field was presented to observe effect of the baffles on sloshing with the aid of ADINA and laboratory experiments conducted on a hexapod motion platform.

中文翻译：

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双向弯曲挡板对减少喘振和俯仰激励下油箱晃荡的影响

晃动与液体存储容器的结构安全性有关。将挡板安装在容器内将有助于减轻由于严重晃动而造成的损坏。在这项研究中，提出了一种创新型的双面弯曲导流板，以评估其在喘振和俯仰激励下减少矩形水箱晃荡的效果。为了与常规挡板进行比较，还通过分析自由表面波高程以及罐壁上的水动力压力，通过实验和数值研究了垂直挡板和T型挡板对减轻晃动的影响。沿弯曲挡板的高度方向的双面弯曲挡板的有效应力比T型挡板的有效应力小得多，尽管它们对晃动波的高度具有相同的缓解效果。通过改变其弧度分析了在双侧弯曲挡板上晃荡引起的有效应力。结果表明，挡板上的有效应力会随着弧度的增加而减小。提出了速度场，以借助ADINA观察挡板对晃荡的影响，并在六脚架运动平台上进行了实验室实验。