High damping is provided over small displacements Compact-sized damper with high endurance Advantages High damping performance High energy absorption reduces seismic force and displacement induced by earthquake. Design freedom Due to the small size of these dampers, the number and capacity of dampers can be matched to the corresponding yield strength of the base structure. Economic efficiency The application to seismic reinforcement reduces the necessity for extra construction work, reducing cost. Structure BM-S transforms the vibration from earthquake or strong winds into motion of a piston inside a cylinder filled with a special material to dissipate vibration energy. Basic Features This chart shows the relationship between force and displacement when an BM-S is subjected to extreme deformation as would be expected in a major earthquake. Modelling of BM-S for structural analysis is straight forward as it is almost independent of vibration and temperature.