Influence of baffle plate on the structural strength of liquid hydrogen tank container tanks
Acceleration,turning,braking of liquid hydrogen tank containers will lead to violent shaking of the internal liquid under road transportation conditions,which will bring impact to the tank structure and cause failure in serious case.Based on the issue of setting up the baffle plate for liquid hydrogen tank,a full-scale analytical model of the tank and internal fluid domain was established to analyze the influence law of baffle plate,filling rate and the number of baffle plates on the stress at weak positions of the tank.The results show that when the baffle plate is not set up,the liquid shaking will lead to an increase of 20%in the stress level of the structure;Setting up baffle plate can reduce the degree of liquid shaking and greatly reduce the impact pressure of the fluid by more than 50%;The installation of baffle plate can reduce the stress increase caused by liquid shaking,in which the stress increase of the three weak positions can be reduced by up to 31.9%,52.8%and 34.2%,which is conducive to improving the service life of the structurally weak positions,and when two pieces of baffle plate are set up in the tank uniformly,the reduction effect of structural stress of the tank is the best,so it is the preferred form of engineering design.
liquid hydrogen tank containersbaffle plateliquid sloshingfluid-solid couplingstructural strength
国家科技期刊平台
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