A new method for seismic analysis of systems with fluid structure interaction

The study of liquid filled systems subjected to seismic excitations has been of interest over the past two decades because of the safety and cost considerations in nuclear facility designs. Due to the size and geometric complexity of fluid tanks, which typically contain submerged structures, numerical methods have been heavily relied upon to provide design guidelines. Many computer codes using finite element or finite difference method have been developed, and a brad range of numerical schemes and physical models have been employed for the simulations of fluid structure interaction behaviors during this period. The implicit displacement formulation is developed by recognizing the essence of fluid structure interaction lies in simultaneously solving the coupled field equations