Uplift Deformation of the Bottom Plate of the Cylindrical Shell Tanks Under Steady-State Response of Tank Rocking Motion
Uplift Deformation of the Bottom Plate of the Cylindrical Shell Tanks Under Steady-State Response of Tank Rocking Motion
复制标题
罐体摇摆运动稳态响应下圆柱壳罐底板的抬升变形
DOI：
10.1115/pvp2020-21418
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Nakashima Teruhiro
中科院分区：
文献类型：
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作者：
Yoshida Yuichi;Taniguchi Tomoyo;Nakashima Teruhiro
平底圆柱壳储罐的浮托现象是一个长期未解决的问题。在本研究中，观察了通过显式有限元分析（参见PVP 2016 -63916）计算的储罐底板的隆起变形，并通过与数值分析结果的比较，检查了基于Euler-Bernoulli梁理论的手动计算模型。首先，本研究分析由有限元分析计算的上拔位移与上拔宽度的结果。然后，观察上拔位移与上拔宽度之间的关系。通过对厚底板和薄底板两种情况下的最大上拔宽度的计算结果进行比较，得出了最大上拔宽度随底板厚度变化的趋势。其次，对基于Euler-Bernoulli梁理论的手算模型进行了验证。通过对罐底板变形的手算结果与有限元分析结果的对比，检验了手算模型的准确性。对比表明，即使不考虑几何非线性，手算模型也能估算罐底板的上拔变形，直到接缝处的上拔位移达到一定高度。
The uplift phenomenon of a flat-bottom cylindrical shell tank is a long-term unsolved problem. In this study, uplift deformation of a tank bottom plate calculated by an explicit finite element analysis (refer to PVP2016-63916) is observed, and a hand calculating model based on Euler–Bernoulli beam theory is examined by comparing with the results of the numerical analysis. First, this study analyzes the results of uplift displacement and uplift width calculated by the FE analysis. Then, the results of the relationship between the uplift displacement and the uplift width are observed. Moreover, comparing the results of the maximum uplift width of a thick bottom plate case and a thin bottom plate case, trends of the maximum uplift width that depends on the thickness of the tank bottom plate are obtained.Seconds, this study tries to verify the hand calculating model based on Euler–Bernoulli beam theory. Compering the results of the deformation of the tank bottom plate calculated by the hand calculation and the FE analysis, accuracy of the hand calculating model is examined. The comparison implies that the hand calculating model may be able to estimate uplift deformation of the tank bottom plate until the uplift displacement of the juncture reaches some height even though the geometrical nonlinearity is not considered.