This paper presents a new type of rotating lead shear damper with large deformation capacity

and basic structure and energy dissipation principle of it are introduced.Hysteresis energy dissipation happening in different displacement condition is studied by low-frequency cyclic load testing on this rotating lead damper.The entity model of this damper is established by using the finite element software ABAQUS

the hysteretic property under low-frequency cyclic loading is simulated

and parameters which affect energy dissipation of this damper are analyzed.Property test and finite element analysis results show that:Hysteretic curve of this new rotating lead shear damper is approximately rectangular

and the damping force is stable;Damping force is in proportion to the length and width of shear lead;Thickness of lead has little effect on the damper yield strength

but with length to thickness ratio of the lead not greater than 5

the yield displacement is inversely proportional to the height of damper.