Calculation and Modification of Failure Pressure around the Top Wall Junction of Dome Tank Based on Numerical Calculation Method
Y. Q. Ding, Q. F. Lu, J. B. Liu, Z. T. Chen, F. Qiu, X. M. Dai
ABSTRACT: In this paper, the dome tank as the object of study, the paper analyzed the stress of the compression ring section of the top wall of the storage tank. According to the analysis method of the yield of the compression ring section of the storage tank, the failure pressure at the top of the tank is solved, and the selection principle of the compression ring section is deduced. And calculated the failure pressure of different capacity dome tank in different super pressure form by using numerical calculation method, then obtained the failure pressure of tank top wall junction based on strength failure analysis method. Finally, according to the results of numerical calculation, the failure pressure calculating formula of the tank top wall junction under static pressure and dynamic pressure was fixed. After correction, the failure pressure of the tank top wall junction under the static pressure calculation formula with the results of numerical simulation calculation maximum relative error was 7.6%, maximum relative error was 9.6% under dynamic pressure. A theoretical basis was provided for tank design and the calculation of failure pressure
Keywords : Dome tank; Failure pressure; Strength failure; Static pressure; Dynamic pressure.