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Title |
Performance Analysis of Friction Damper Considering the Change of the Vertical Force
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Authors |
조성국(Sung Gook Cho) ; 박웅기(Woong Ki Park) ; 이성태(Seong-Tae Yi) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.1.059 |
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Keywords |
댐퍼 ; MER-Spring ; 마찰계수 ; 유한요소해석 Damper ; MER-spring ; Friction coefficient ; Finite element analysis |
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Abstract |
In this paper, to protect the piping in nuclear power plants and various plant facilities, we have developed a damper using the friction method and carried out a study to analyze the performance. Friction typed damper means a device for attenuating vibration by generating a frictional force to the bearing and the shaft by applying a compressive force to the MER-Spring. In order to analyze the performance of the damper, the properties of MER-Spring and friction materials were analyzed, a study on the effects of friction was carried out, and the behavior of this equation was established. And, to determine whether deformation of the material and to examine the reliability of the behavior equation established, prototypes was produced and, through a performance test and finite element analysis of a damper made of specimens, they were analyzed. As a result, it is noted that the reliability of the material was confirmed, the coefficient of friction have to be adjusted according to the velocity, cyclic loading test and finite element analysis results show exhibits excellent results. In addition, a review of the dynamic loads in the future shall be performed for the usage in more broad fields.
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