Steel slit damper for prevention of out-of-plane buckling and stress concentration

摘要

The present invention provides a steel slit damper having a stress concentration and a prevention of out-of-plane buckling, which prevents premature rupture due to stress concentration of a strut in which plastic deformation is caused, suppresses lateral buckling in the out-of-plane direction, and induces large plastic deformation in the in- do. According to a preferred embodiment of the present invention, there is provided a lower plate having a rectangular cross section over a certain length; An upper plate having the same cross-sectional structure as the lower plate and disposed on the upper portion of the lower plate; A plurality of struts having a predetermined length, one end of which is integrally connected to the lower plate and the other end is connected to the upper plate; And slits formed through adjacent struts, respectively; The center portion of the slit is formed to be convex at a center of rotation centered on the center line passing through the center of the strut so that the cross sectional area of the strut is smaller than the upper and lower ends, Stress concentration is prevented, and at the same time, the central portion of the strut deforms preferentially over the upper and lower ends.