• Journal of the Korean Society of Manufacturing Process Engineers
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• v.5 no.3
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• pp.92-98
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• 2006

In this study, the behavior characteristics of a hydrostatic thrust bearing used in hydraulic equipment was analyzed using a commercial finite element program, ADINA. The solid domain was modeled with the fluid domain simultaneously to solve the fully coupled problem, because this is a problem where a fully coupled analysis is needed in order to model the fluid-structure interaction(FSI). The results such as bearing deformation, stress, film thickness and lifting bearing force were obtained through FSI analysis, and then they were compared with the results calculated from the classical method, a single step sequential analysis. It was found that the result difference between two analyses was increased according to the injection pressure. Therefore, in case of high pressure loading, it is desirable to conduct the FSI analysis to examine the deformation characteristics of a hydrostatic slipper bearing.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 1993.04a
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• pp.108-111
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• 1993

일반적으로 정수압 베어링은 저진동, 저마찰 및 높은 댐핑 특성을 가지며 하중 지지 용량도 커서 공작 기계, 측정 기구등에 광범위하게 하용된다. 특히 여러 산업이 발달함에 따라 점차 정밀 부품의 필요성이 증가되고 있고 공작 기계의 용량도 점차 대형화되는 추세에 있다. 이에 따라 공작 기계의 미끄럼 운동을 지지하는 베어링은 높은 강성 및 높은 하중 지지용량을 갖게할 필요가 있다. 본 논문에서는 능동적 급유 방식의 리스트릭터의 한 종류인 다이아프램 제어 밸브 (diaphram control valve)와 수동적 급유 방식의 리스트릭터의 한종류인 오리프스의 특성을 이론적으로 해석하고 실험을 통하여 이론 해석의 타당성을 검증하고 결과를 도시하고자 한다.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.37 no.2
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• pp.241-248
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• 2013

In this study, bearings were developed for a high-power propulsion motor operating in inclined operation conditions through a simulation and similitude-experimental methods using commercial rotating machinery dynamics analysis software. The developed journal bearing is electrically insulated and has low thermal conductivity because each part is connected with 2-4 -mm-thick epoxy plates. To realize an appropriate oil thickness, an oil lift system is adopted, and a half separated structure is applied to ensure the feasibility of maintaining very heavy components. This study discusses some of the key design aspects of sleeve bearing design for high-torque and low-speed propulsion motor applications. Furthermore, the conditions of variable slope tests are examined to prevent oil leakage from the bearing lip seal on the test rig.