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首页> 外文期刊>International journal of structural stability and dynamics >Coupled Dynamic Analysis of Liquid Storage Tanks Under Implosion-Generated Overpressure
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Coupled Dynamic Analysis of Liquid Storage Tanks Under Implosion-Generated Overpressure

机译：液体储罐局部储存罐的耦合动态分析

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摘要

To deal with the effect of liquid storage on the distribution of implosion, a fluid-solid coupling model is built for the shared nodes of implosion in the liquid storage tank. The displacement compatibility and acceleration and speed coupling are achieved between the implosion field (gas, liquid) and liquid storage tank. First, using this model, the implosion-generated overpressure distribution and structural response under the working condition of half filled tank are obtained. The results show that the overpressure, displacement and stress are high on the shell near the liquid level. Then, the effects of both the TNT equivalent and liquid level on implosion in the liquid storage tank are studied. As the TNT equivalent increases, the maximum overpressure, displacement and stress on the shell near the liquid level increase. Consequently, the maximum overpressure and displacement on the shell near the liquid level exceed those at the roof-to-shell connection of the tank. In contrast, as the liquid level increases, the maximum stress and displacement first increase near the shell. After reaching the peaks near half filled level, they begin to decrease. Only when the liquid reaches a certain level, it can have an attenuating effect on the overpressure at the bottom-to-shell connection. However, if the liquid level continues to rise beyond a certain threshold, the attenuating effect is no longer prominent.
机译：为了处理液体储存对爆炸分布的影响，为液体储罐中的爆炸的共用节点构建了流体固耦合模型。置换兼容性和加速度和加速耦合是在内部内部（气体，液体）和液体储罐之间的实现。首先，使用该模型，获得了半填充罐的工作条件下的内爆产生的过压分布和结构响应。结果表明，在液位附近的壳体上的过压，位移和应力高。然后，研究了TNT等效物和液位对液体储罐内的内部内部内部的影响。随着TNT等效的增加，液位附近壳体上的最大过压，位移和应力增加。因此，液位附近的壳体上的最大超压和位移超过罐的屋顶到壳连接处的壳体。相反，随着液位增加，壳附近的最大应力和位移首先增加。在达到半填充水平附近的山峰后，他们开始减少。只有当液体达到一定水平时，它只可以对底部到壳连接的过压进行衰减效果。然而，如果液位继续超出一定阈值，则衰减效果不再突出。

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