LIQUID VIBRATION ANALYSIS IN RIGID TANKS WITH FUZZY DIFFERENTIAL EQUATIONS

Abstract

Liquid sloshing is an important phenomenon arisen in a lot of engineering applications. When tanks and reservoirs are partially filled with liquids and subjected to essential external loads, the liquid begins its intensive movement. This motion can lead to very dangerous consequences. It is especially hazardous when the liquid is inflammable and toxic. So considerable amount of research is devoted to studying the dynamical process in fluid-filled tanks and reservoirs. A lot of devices were proposed to damp sloshing as well as new materials for tank’ structures. Last years the concepts of estimating uncertainties became dominant in scientific research. These uncertainties may be observed in sizes of reservoirs, their mechanical characteristics, frequencies and amplitudes of forced loads.