Hydroelastic effect and new reduction device on sloshing load

水弹性效应和新型晃荡载荷减少装置

• 批准号: 21246131
• 负责人: TANAKA Yoshiteru
• 金额: $ 15.97万
• 依托单位: National Maritime Research Institute
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21246131/
• 关键词: 船舶工学; スロッシング; 流力弾性応答; 低減装置; LNG船; 縮尺影響; 相似則; 有限要素法解析

In order to establish the estimation method of sloshing load in consideration of the hydroelastic effect of tank walls and to develop the new reduction device for sloshing pressure, the experimental study was conducted by using the various types of tank models. As results, it was cleared that the ratio of the average peak pressure showed from 0.7R to 1.3R compared with the scale ratio R of tank models and that the mass of additional water could be estimated by the quarter circle model when the impulsive pressure was applied to tank top plate. In addition, though the reduction effect of sloshing pressure by membrane materials was remarkable for wide filling ratio of inside fluid, it was found that the reaction force at supporting points of ropes got to large in the middle and high filling ratio. Therefore, the reduction device was improved only for low filling ratio and its effectiveness was verified experimentally.

为了在储罐壁的水力弹性方面建立倾斜载荷的估计方法，并开发了新的还原设备以延伸压力，实验研究是通过使用各种类型的储罐模型进行的。结果，可以清楚地看出，与储罐模型的比例R相比，平均峰压力从0.7R到1.3R的比率比，当将冲动压力施加到背心板上时，额外水的质量可以通过四分之一圆模型估算。此外，尽管膜材料晃动压力的减小效果对于内部流体的较宽填充比非常明显，但发现绳索支撑点处的反作用力在中间和高填充率中大大呈较大。因此，仅针对低填充比改进了还原装置，并通过实验验证其有效性。

项目成果

スロッシング荷重軽減装置及びスロッシング荷重軽減装置付き船舶

晃动减载装置和配备晃动减载装置的船舶

• 发表时间: 2010