In a storage tank modeling the fluid behaves correctly but the tank structure not,whats wrong?

17 June 2017 1 3K Report

I'm modeling a tank in ABAQUS under the earthquake excitation which is half filled with water. for verification purpose I have to compare my time history output with a paper. at the middle of the long side wall I've got sloshing height time history and on top of it acceleration time history. the sloshing height time history is correct according to the paper...but it is odd that acceleration is not...it has the same shape but its magnitude is half of the paper's time history

what could be wrong? could it be because of the damping? or maybe something els?

Javad Sarjoughian

are you modeled interaction between tank and liquid?

and are you assume all condition of problem for expample linear or nonlinear of stiffness and etc..

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