Evaluation of mechanical properties considering hysteresis characteristic of high damping rubber bearing

K. H. Park, Y. Fujiwara, T. Mazda, Y. Kajita

研究成果: Contribution to journalConference article査読

抄録

Recently, laminated rubber bearings are widely used as seismic isolators for road bridges. Although many studies have been conducted on the dynamic model of High Damping Rubber (HDR) bearings, few models can reflect phenomena such as the dependency of experienced shear strain on initial history. To develop a model that can represent the dependency of the experienced shear strain of HDR and a dynamic loading test was conducted using HDR specimens. The hysteresis characteristics of HDR was measured by applying a horizontal vibration using a hybrid actuator under a constant vertical load. Based on the cyclic shear test, the mechanical properties of HDR were calculated such as absorbed energy, hysteresis loop area, equivalent stiffness, equivalent damping ratio. Dynamic analysis was also performed from the experimental results. The dynamic model applied in program analysis is a bilinear type double-target model. This model can express the nonlinear characteristics related to the initial history of HDR bearings. The parameters required for dynamic analysis were determined from the experimental results. Through this dynamic analysis, the effectiveness of the bilinear type double target model was verified. In this research, a high damping rubber specimen was used.

本文言語英語
論文番号012019
ジャーナルJournal of Physics: Conference Series
1687
1
DOI
出版ステータス出版済み - 11 24 2020
イベントInternational Conference on Engineering Systems 2020, ICES 2020 - Moscow, ロシア連邦
継続期間: 10 14 202010 16 2020

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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