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RISS 인기검색어
- 검색키워드
- 저자 : 권영두(Youngdoo Kwon) (검색결과 5 건)
- 무료
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권영두(Youngdoo Kwon),이준혁(Junhyuk Lee),손창현(Changhyun Sohn),최종하(Jongha Choi),임재규(Jaegyoo Lim),이헌우(Hunwoo Lee) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Link-system is necessary to transfer power and has widely been used in many fields such as an automobile, robot, mechanical engineering. This dissertation indicates that we design double three-bar and double four-bar driver by motor so that they can have each other difference degree. Therefore, we analyze link mechanism to have the same output for each bar coping with the same input for it. Unless it is accomplishes, we will look for the length and position of the link minimizing weight. We used SZGA(Successive zooming genetic algorithm; Computers & Structure, 2003), the technique of optimum design, the optimum value obtained by it is verified by an experiment, fortran link program developed in person and Recurdyn which is 3-D Dynamic Mechanics Analysis package.
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권영두(Youngdoo Kwon),김재용(Jaeyong Kim),이재관(Jaekwan Lee),권현욱(Hyunwook Kwon),한인식(Insik Han) 한국자동차공학회 2005 한국 자동차공학회논문집 Vol.13 No.1
Nowadays, various land of rubber-like materials are used in industry. These are usually installed in automobiles, trains, etc. They work as dampers or important parts in the system, and the applications for rubber-like materials are increasing. In the past days, rubber engineers and designers predicted rubber material behaviors by the analytic method for limited problems. With the progress of digital computers, Finite Element Methods is widely used for analyzing the rubber-like materials. The popular methods predicting rubber material property are curve fitting and least square method, but there are some problems such as low precision and tedious solving process. Here, we introduce a method estimating rubber material property by successive zooming genetic algorithm(SZGA). The proposed algorithm offers more precise rubber property. To demonstrate the effectiveness of the proposed algorithm, we compared this method with Haines & Wilson's method, MARC, ABAQUS.
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실험계획법을 이용한 자동차 시트 구조물 최적설계 및 해석 연구
정호진(Hojin Jung),이대섭(Daesuep Lee),권영두(Youngdoo Kwon),한덕희(Duckhe Han) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
In modern times, development trend of automobiles is the tendency to prefer the high fuel efficiency of automobile. Also, the structure of seat that takes 4% of automobile’s weight is the target to be secured the stability enough and attain the lightweight, To meet this, the characteristics of load to be applied to seat structure must be analyzed from the initial time, and it must be considered and designed material, thickness, distance to be assembled with recliner and condition of section through the calculation of numerical value. This study performed to reduce stress and moments to be occurred to seat frame through keep the optimum condition with D.O.E for cushion frame of seat due to passenger inertia weight at the rear Collision of automobile, This study looked for optimum values with Minitap and analyzed the cushion frame of seat with LS-DYNA, FEA tool, according to those Factor
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