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채상일(S. I. Chae),송진대(J. D. Song),양보석(B. S. Yang),공영모(Y. M. Kong),최수현(S. H. Choi) 한국동력기계공학회 2004 한국동력기계공학회 학술대회 논문집 Vol.- No.-
Recently, the importance of ship vibration is emerging due to the large scaling, high speed and lightning of ship. For pleasantness in a cabin, shipbuilders ask for strict vibration criteria and the degree of vibration level at a deckhouse became an important condition for taking order from customers. This study conducted normal modes analysis and forced response analysis for the deck house parts of the Container Ship.
채상일(Chae Sang Il),김병수(Kim Byoung Su),임우섭(Lim Woo Seop),양보석(Yang Bo Suk) 한국소음진동공학회 2012 한국소음진동공학회 학술대회논문집 Vol.2012 No.10
The gas compressor is one of the important machine in the petrochemical industry. It is likely to have high vibration problems due to having large reaction source and structural characteristic. In this paper we analyze the cause of high vibration in the reciprocating compressor and present a solution to this problems. By performing this case study, we confirm the effectiveness of vibration reduction through excitation source changes.
선박 구조물의 진동 최적설계를 위한 NASTRAN 기반 최적화 프레임웍의 제안
공영모(Kong, Y.M.),최수현(Choi, S.H.),채상일(Chae, S.I.),송진대(Song, J.D.),김용한(Kim, Y.H.),양보석(Yang, B.S.) 한국소음진동공학회 2005 한국소음진동공학회 논문집 Vol.15 No.11
Recently, the issue of ship nitration due to the large scale, high speed and lightweight of ship is emerging. For pleasantness in the cabin, shipbuilders are asked for strict vibration criteria and the degree of nitration level at a deckhouse became an important condition for taking order from customers. This study proposes a new optimization framework that is NASTRAN external call type optimization method (OptShip) and applies to an optimum design to decrease the nitration level of a deckhouse. The merits of this method are capable of using of global searching method and selecting of various objective function and design variables. The global optimization algorithms used here are random tabu search method which has fast converging speed and searches various size domains and genetic algorithm which searches multi-point solutions and has a good search capability in a complex space. By adapting OptShip to full-scale model, the validity of the suggested method was investigated.