Dynamic Response of Falling Liquid Storage Container Under Transient Impact

The dynamic response performance of a large, cylindrical, fluid-filled steel container under high-speed impact is evaluated through fluid-structure interaction analysis using arbitrary Lagrange-Eulerian(ALE)method. The ALE method is adopted to accurately calculate the structural behavior induced by the internal liquid impact of the container. The stress and strain results obtained from the finite element analysis are in line with the experimental shell impact data. The influences of drop angle, drop height, and flow impact frequency are discussed. Calculation results indicate that the impact stress and damage of the container increase with drop height. However, the amplitude of the oscillation and the impact stress increase when the container and flow impact resonance occur at a certain drop height. The impact stress shows a nonlinear relationship with drop angle.