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정상호(S.H. Jung),김광용(K.Y. Kim),김강훈(K.H. Kim),박성규(S.K. Park) 한국전산유체공학회 2009 한국전산유체공학회지 Vol.14 No.2
The purposes of present work are to analyze the convective heat transfer with three-dimensional Reynolds-averaged Navier-Stokes analysis, and to optimize shape of the mixing vane taken tolerance into consideration by using the analysis results. Response surface method is employed as an optimization technique. The objective function is defined as a combination of heat transfer rate and inverse of pressure drop. Two bend angles of mixing vane are selected as design variables. Thermal-hydraulic performances have been discussed and optimum shape has been obtained as a function of weighting factor in the objective function. The results show that the optimized geometry improves the heat transfer performance far downstream of the mixing vane.
Thread Whirling Machine의 Worm Shaft 절삭공구의 마찰특성 및 수명예측에 관한 연구
손재환(J. H. Son),배대원(D. W. Bae),정상호(S. H. Jung),박건우(G. W. Park),이영문(Y. M. Lee) 한국생산제조학회 2007 한국공작기계학회 춘계학술대회논문집 Vol.2007 No.-
Recently, the application of the high-speed, precision part in automobile is increasing with the developments of design and manufacturing technologies of machining center and cutting tools. And worm shaft manufacturing changed from rolling process to whirling cutting process for high precision cutting. For analysis whirling cutting characteristics and tool life, geometrical definition is necessary. This paper developed a new formulas based on equivalent undeformed chip thickness, undeformed chip section area simulated with cutting condition.
Thread Whirling Machine의 Worm Shaft 절삭공구의 마찰특성 및 수명예측에 관한 연구
손재환(J. H. Son),배대원(D. W. Bae),정상호(S. H. Jung),박건우(G. W. Park),이영문(Y. M. Lee) 한국생산제조학회 2007 한국생산제조시스템학회 학술발표대회 논문집 Vol.2007 No.5
Recently, the application of the high-speed, precision part in automobile is increasing with the developments of design and manufacturing technologies of machining center and cutting tools. And worm shaft manufacturing changed from rolling process to whirling cutting process for high precision cutting. For analysis whirling cutting characteristics and tool life, geometrical definition is necessary. This paper developed a new formulas based on equivalent undeformed chip thickness, undeformed chip section area simulated with cutting condition.