Equilibrium and Stability of Rectangular Liquid-filled Vessels
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Here we focus on the stability characteristics of a rectangular liquid-filled vessel. The position vector of the center of gravity of the liquid volume is derived and used to express the equilibrium angles of the vessel. Analysis of the potential function determines the stability of these equilibria, and bifurcation diagrams are constructed to demonstrate the co-existence of several equilibrium configurations of the vessel. To validate the results, a vessel of rectangular cross-section was built. The results of the experiments agree well with the theoretical predictions.
Trahan, Russell E (2010). Equilibrium and Stability of Rectangular Liquid-filled Vessels. Honors and Undergraduate Research. Available electronically from