抄録
In recent years, research and development of various types of dampers were applied to several structures, such as buildings and large-scale industrial structures, in order to reduce their seismic responses during earthquakes. An elastomeric extrusion damper having its simple configuration was proposed as a large-capacity damper. The damper used un-valcanized rubber as its working fluid, and could obtain large damping forces by throttling plastic flow of rubber in a vessel. In this paper, dynamic tests were carried out for a full-size damper, which was designed to have a 500kN damping force at velocity input of 0.25m/s and could be used for vibration control of high-rise buildings and large-scale industrial facilities. From the experimental results, the load-displacement characteristic of the damper was found to have a rectangular shape with the rounded corners, and it was also confirmed that the damping force was proportional to the velocity raised to the power of 0.1107.
