Aiming for greater sophistication and wide use of High-Damping Rubber technology, we conduct joint research with a university research institute, and put the rubber to practical use in various fields.
Working to realize safe and secure building structures using innovative vibration control technology.
Sumitomo Rubber has continually been conducting joint research since 2005 with the Kyoto University Graduate School's Engineering Department of Architecture and Architectural Engineering. This joint research revealed the following points regarding our High-Damping Rubber.
i) The damper's hysteretic characteristics can be modeled as an assembly of multiple elements including elastic-plastic, elastic and viscous elements.
ii) For minute deformation, building response must be reduced with a damping and restoring force that has high rigidity.
As a structural characteristic, our building-specific vibration-control damper is rigidly connected with the main structure and thus is free from mechanical gaps.
These characteristics show that our building-specific vibration-control damper has a high energy-absorption performance with regards to minute deformation.
Wind response small amplitude test
Tests are conducted repeatedly using various types of dampers.
It has been proved that our building-specific vibration-control damper can reduce habitability-related acceleration response and structure safety-related displacement response in a balanced manner. It does so in a wide range of conditions from minute wind turbulence, which is seen at all times, to large-scale earthquakes, which rarely occur. These characteristics are supported by experimental research such as a submicroscopic deformation dynamic loading test on High-Damping Rubber and theoretical research such as equivalent linear analysis. Aiming to create new possibilities in the field of vibration-control, we are determined to contribute to society with our High-Damping Rubber. We will continue with joint research and improve the habitability and safety of buildings.
Building-specific damper test using actual-size structure
Our proprietary technology provides the damper with significantly high rigidity under small amplitude vibration and excellent damping performance regardless of the amplitude. It has a low temperature dependence and operates in a stable manner regardless of changes in the environment.
- Experiment date
- November 2011
- Test piece
- Product name: SR4015-GR4
High-Damping Rubber size: □400 mm × t15 mm × 2 layers
- Test condition
- Shearing strain: 200%
Shearing deformation amount: 30 mm
Frequency: 0.1 Hz