Ellipsoidal liquid storage device with grating and mechanical property simulation method thereof

The invention provides an ellipsoidal liquid storage device with a grating and a mechanical property simulation method thereof.The liquid storage structure comprises a liquid tank body and the grating arranged in the liquid tank body and used for dissipating oscillation energy, the liquid tank body and the grating are both spatial axisymmetric ellipsoids, a plurality of through holes communicated with the internal volume of the grating are formed in the grating, and the grating is arranged in the liquid tank body. The pore influence coefficient of the through holes is uniform; a liquid inlet is formed in the upper part of the liquid tank body; a liquid discharge hole is formed in the lower part of the liquid tank body; according to the mechanical property simulation method, three-dimensional axisymmetric liquid sloshing analysis meeting a Laplace equation is adopted for order reduction to be two-dimensional solution, then a discrete equation of a meridian plane boundary is obtained, an axisymmetric isogeometr