Sloshing Response of LNG Tanks Subjected to Seismic Ground Motion

摘要

A numerical method is described for the seismic response analysis ofrnLNG tanks accounting for nonlinear sloshing effects. A dynamicrnanalysis of LNG tanks is carried out using a hybrid formulation, whichrncombines the finite element for structures and the boundary element forrnLNG. The boundary element for LNG must satisfy the free surfacernboundary condition. The nonlinear sloshing dynamic behavior is studiedrnin terms of wave height on the liquid surface, and hydro-dynamicrnpressure on the wall. Numerical examples are presented to demonstraternthe accuracy of the developed method, and the dynamic response ofrnLNG tanks under the seismic excitations is carried out to demonstraternthe applicability of the developed technique.