Coupled Bilateral Hysteretic Behavior of High-damping Rubber Bearings under Non-proportional Plane Loading

ABSTRACT

The hysteretic behavior of high-damping rubber bearings under different non-proportional plane loading paths is experimentally examined. Compared with unilateral reversal loading test results, non-proportional plane loading will make the rubber of high-damping rubber bearings have additional regional shear strain, thus leading to quite different mechanical properties and hysteretic behavior. A previously developed mathematical model is further modified for appropriately characterizing the unilateral and bilateral behavior of high-damping rubber bearings. The applicability and generalization of the further modified model are examined and demonstrated by comparing its predictions using a unique set and different sets of identified coefficients with the test results.

KEYWORDS:

• high-damping rubber bearing
• non-proportional
• plane loading
• torsional coupling
• experimental study
• mathematical model

Acknowledgments

The study was financially aided by the Ministry of Science and Technology (MOST) of Taiwan [105-2221-E-011-169-MY2], and was experimentally supported by the National Center for Research on Earthquake Engineering (NCREE), National Applied Research Laboratories (NARL) of Taiwan and Bridgestone Corporation, Japan. The support is greatly acknowledged.

Additional information

Funding

This work was supported by the Ministry of Science and Technology, Taiwan [105-2221-E-011-169-MY2].