• CDE review
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• v.2 no.2
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• pp.52-54
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• 1996

드럼세탁기에 있어서 weight는 세탁기의 진동 및 소음에 중요한 역할을 한다. 기존 pulsator 세탁기는 액체밸런스를 사용하여 세탁물의 편심을 상쇄시켜 세탁기의 진동을 억제시키지만, 드럼세탁기는 주물이나 시멘트 등을 weight balance로 사용하고, 세탁기 구동부의 무게, damping system 등과의 상호작용으로 세탁기의 진동을 억제시킨다. 본 연구에서는 Ideas-Design의 Master Molder와 Assembly을 사용하여 드럼세탁기의 weight balance을 설계한다. 이와 같이 weight balance는 드럼진동 및 소음 뿐만 아니라 세탁기의 전체 무게에도 매우 큰 영향을 미친다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2013.04a
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• pp.754-755
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• 2013

• Proceedings of the Optical Society of Korea Conference
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• 2005.07a
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• pp.44-45
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• 2005

• Proceedings of the Korean Fiber Society Conference
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• 2001.10a
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• pp.147-150
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• 2001

더블 라셀기(Double Raschel Machine)는 레이스와 메리야스 직물 등을 생산하기 위한 섬유기계로써 대부분의 섬유기계들이 그러하듯이 수많은 링크와 기구들로 이루어져 있다. 따라서, 이러한 복잡한 링크들로 이루어진 기계 구조물을 국산화 개발하기 위해서는 설계오류에 따른 수많은 시행착오와 시간이 소요된다. (중략)

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2011.06a
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• pp.201-202
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• 2011

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.11a
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• pp.341-342
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• 2010

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2013.10a
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• pp.858-859
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• 2013

• Journal of ILASS-Korea
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• v.25 no.3
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• pp.103-110
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• 2020

In this study, the behavior of water droplet impacting on a thin horizontal wire was visualized by time-delay photography. The impact behavior modes, critical capture speed and trapped mass were analyzed by changing the droplet size, velocity, wire diameter and eccentricity ratio. As the Weber number increased, the hanging, merging, and splitting modes appeared sequentially for the case of central impact, and the hanging and non-splitting modes appeared for the case of off-center impact. The boundary We number of each mode was affected by the diameter ratio. The critical capture speed was affected much by the degree of eccentricity. For all diameter ratios, it was higher for the case of central impact than for off-center impact. The trapped mass was larger for the case of central impact than for off-center impact and it increased with the smaller We number and the larger diameter ratio.

• Journal of Industrial Technology
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• v.22 no.A
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• pp.229-240
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• 2002

This paper is an experimental and numerical work of Investigating the bearing capacity of shallow foundation of rubble mound under eccentric loads. Parametric centrifuge model tests at the 50g level environments with the model footings in the form of strip footing were performed by changing the loading location of model footing, relative density and materials for ground foundation. For the model ground, crushed rock sampled from a rocky mountain was prepared with a grain size distribution of having an identical coefficient of uniformity to the field condition. Model ground was also prepared with relative densities of 50 % and 80 %. For loading condition, model tests with and without eccentric load were carned out to investigate the effect of eccentric loads and a numerical analysis with the commertially available software of FLAC was performed. For numerical estimation with FLAC, the hyperbolic model of a nonlinear elastic constitutive relationship was used to simulate the stress-stram constitutive relationship of model ground and a series of triaxial compression test were carried out to find the parameters for this model Test results were analyzed and compared with Meyerhof method (1963), effective area method based on the limit equilibrium method, and a numerical analysis with FLAC.

• Journal of the Society of Naval Architects of Korea
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• v.46 no.5
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• pp.545-551
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• 2009

In naval architecture and offshore engineering, the development and a broad use has been achieved in the field of flow control valves for pipe system. Butterfly valves are also widely used for flow control, but there are not many studies for triple-eccentric butterfly valves. Moreover, if the fluid of pipeline flows in the bi-direction then it makes more complicate to adapt triple-eccentric butterfly valves to flow control. In this study, we are trying to develop a bi-directional triple-eccentric butterfly valve through sealing mechanism and stem design study. Digital mockup using 3D CAD was constructed for shape interference check and structural analysis was conducted for structural safety. Also we performed leakage test to check out the durability of the bi-directional pressure for the developed valve.