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为了避免因液体晃动过大而引起的储罐“象足”型失稳破坏,采用减晃板作为抑晃装置并对其进行了减晃优化设计。分别采用缩尺模型试验(缩尺比1∶30)和有限元分析等手段对有、无安装减晃板的储罐内的液体晃动波高、罐底剪力及罐壁压应力等关键指标进行了实测和仿真模拟。研究结果表明:关键指标的模拟值与实测值较为接近,进而验证了储罐减晃有限元分析的可靠性;当减晃板在距液面0.125倍~0.225倍的储罐高度且其宽度在0.15倍的储罐半径附近时,减晃板对储液晃动波高、罐底剪力及罐壁压应力都具有较好的抑制效果;减晃优化设计后,“象足”失稳区(接近罐底处)的罐壁压应力峰值得到了较为显著的抑制。
In order to avoid instability damage of the storage tank due to excessive liquid sloshing, anti-sloshing devices are used as the anti-sloshing device and optimized for the reduction of the thickness. The key indicators such as liquid sloshing wave height, tank bottom shear stress and tank wall compressive stress in tanks with and without swaying plates were respectively measured by scale model test (1:30 scale ratio) and finite element analysis Measured and simulated. The results show that the simulated values of the key indicators are close to the measured values, and the reliability of the finite element analysis of the storage tank is verified. When the height of the storage plate is 0.125 times to 0.225 times the height of the tank and the width is 0.15 times the radius of the tank, the reduction plate on the liquid storage wave height, the tank bottom shear stress and tank wall have a good inhibitory effect; reduce the optimization design, “like feet ” destabilization zone (Close to the tank bottom) of the tank wall compressive stress peak has been more significantly inhibited.