Experimental and Analytical Study of the Dynamic Behavior of a Polyurethane Spring Restoring Disk Bearing

폴리우레탄 스프링 복원형 디스크 받침의 동적거동에 대한 실험 및 해석적 연구

  • 박형기 (인천대학교 토목환경시스템공학과) ;
  • 이유인 (에스코알티에스 기술연구소) ;
  • 정대유 (인천대학교 대학원)
  • Received : 2011.01.14
  • Accepted : 2011.03.11
  • Published : 2011.04.30


In this paper, the factors affecting the dynamic characteristics of a polyurethane spring restoring disk bearing are analysed to predict the dynamic behavior of the bearing. The prediction results and the test results are compared. The Young's modulus of the polyurethane spring, which varies according to strain of spring and the friction coefficient, of PTFE (PolyTetraFluoroEthylene), which varies according to the velocity and pressure of PTFE, are considered as the factors influencing the dynamic characteristics. W-PTFE virgin products are used and polyurethane springs are produced for the tests. The equation related to changing the friction coefficient and the modulus of elasticity are obtained through an inverse estimation of the test results. The estimation results, considering the factors affecting the dynamic characteristics, simulate the test results more appropriately than the estimation without the consideration of those factors.


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