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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.
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.