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http://dx.doi.org/10.5762/KAIS.2017.18.12.106

Stiffness evaluation of elastomeric bearings for leg mating unit  

Han, Dong-Seop (R&D Team, Remitite Co., Ltd.)
Jang, Si-Hwan (Graduate School, Department of Mechanical Engineering, Dong-A University)
Lee, Kwon-Hee (Department of Mechanical Engineering, Dong-A University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.12, 2017 , pp. 106-111 More about this Journal
Abstract
In this study, the stiffness of an LMU (Leg Mating Unit), which is a device required for installing the top side part of an offshore structure, was examined through structural analysis. This unit is mounted on the supporting point of the structure and is used to absorb the shock at installation. It is a cylindrical structure with an empty center. To support the vertical load, elastomeric bearings (EBs) and iron plates are laminated in layers. The stiffness of the EBs is basically influenced by the size of the bearings, but it varies with the number of laminated sheets inside the same sized structure. The relationship between the stiffener and the compressive stiffness is investigated, and its design is suggested. The stiffness of the EBs is analyzed by calculating the reaction force, while controlling the displacement. First, the relationship between the size of the reinforcing plate and the compressive stiffness is considered. Next, the relationship between the number of stacked reinforcing plates and the compression stiffness is considered. Different loads are required for each installed point. The goal is to design the compression stiffness in such a way that the same deformation occurs at each point in the analysis. In this study, ANSYS is used to perform the FE analysis.
Keywords
Leg Mating Unit; Elastomeric Bearing; Stiffness Coefficient; Finite Element Analysis; Force-Displacement Curve;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Chaitanya. K, Nair. S.B, "Design of Leg Mating Unit for Float-Over Installation of Decks", Ocean, Offshore and Arctic Engineering Division, Vol. 1, pp. V001T01A037: 12 page. June 2013. DOI: https://doi.org/10.1115/OMAE2013-10707
2 Hu. Z, Li. X, Zhao. W, Wu. X, "Nonlinear dynamics and impact load in float-over installation" Applied ocean research, vol. 65, pp. 60-78, 2017. DOI: https://doi.org/10.1016/j.apor.2017.03.013   DOI
3 Hyun-Duk Kim, Si-Yoong Yoo, Jung-Sun Park, "Design of an Elastomeric Bearing for a Helicopter Rotor Hub by Non-linear Finite Element Method", International journal of aeronautical and space sciences, vol. 38, no. 6, pp. 5, 2010. DOI: https://doi.org/10.5139/JKSAS.2010.38.6.612
4 Kim Taeju, Kim Seungho, Hwang Inhui, Bae Gyeongmun, Han Jeongho, "Establishment elastomer bearing & lead-lag damper requirements for helicopter main rotor", International journal of aeronautical and space sciences 2008 Fall Conference collection of dissertations1, pp. 731-734, 2008.
5 J. C. Simo, J. M. Kelly, "The Analysis of Multilayer Elastomeric Bearings", The american society of mechanical engineers, Vol. 51, 7page, June. 1984. DOI: https://doi.org/10.1115/1.3167609