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Shin, Shang-Hyon 목포해양대학교해사산업기술연구소 1997 심포지움강연논집 Vol.1997 No.11
Axisymmetric metal forming operations used to produce cylindrical components typically leave the material in a work hardened state containing an axisymmetric patterns of residual stresses. When a cylindrical specimen containing residual stresses is machined, part of the residual stresses within the material is also removed. Hence, as a result of the machining operation, the residual stress state in the remaining material is redistributed in an attempt to re-establish the equilibrium of internal forces. Redistributed residual stresses can play an important role in material's properties and performance of a machined component. Quantitative prediction of the redistribution of residual stresses in the remaining body is of great importance for estimating the effects of the stresses on material's properties of a machined component. Original residual stress state in the cylinder was introduced by finite element simulation of autofrettage process. The resulting residual stress pattern was then used in all subsequent analysis. Inner layer removal of the cylinder was simulated by finite element technique, and the resulting redistributed residual stresses through the thickness of the cylinder upon the layer removal was compared to original residual stresses.
유체역학모델을 이용한 울산만의 조류 및 잔차류 시뮬레이션
김광수 목포해양대학교 해사산업기술연구소 1996 심포지움강연논집 Vol.2 No.2
The tidal currents and residual flows in Ulsan Bay were simulated and reproduced by a hydrodynamic model in order to prepare for the application to various real aspects such as the evaluations of coastal development, the constructions of breakwater and marine facilities, and navigation safety at sea, the prediction of pollutant distribution in water, and the monitoring or prediction of oil spill movement on sea surface. Comparing the computed with the observed tidal currents and residual flows in Ulsan Bay, the results of simulation of simulation were found to be good enough to satisfy the real applications.
乘船生活館 生活環境 改善에 關한 硏究 : 木浦 海洋大學校 乘船生活館을 中心으로 Centering on a Dormitory of Mokpo Maritime University
朴貴南 목포해양대학교 해사산업기술연구소 1996 심포지움강연논집 Vol.2 No.1
In this paper what-should-be of a community life was investigated as a basis of arguments, and environmental problems and the status quo of dormitory were analysed. Subseguently, it is proposed how to make the dormitory pleasant, comfortable and suitable to study. The contents of the study ore as follows. 1. The theoretical basis about what-should-be of community life. According to J.S.C.hoi(1985) et al, the training process during fixed period through the community life is required in order to get an ability to adapt oneself to a new circumstance. They proposed the fixed training period should be more that one year at least and stressed tow to three years generally although there are differences among scholars. 2. A proposed plans to improve the environment of the dormitory. First, the dormitory should be independent from the university completely. Second, a selective period of dormitory training should be introduced after a fixed compulsory period in order to let them adapt a changing competition society rapidly. Third, for a reasonable management of the dormitory, the followings should society rapidly. (1) Deposit system, (2) Room system, (3) Responsible managers of each dormitory building like as apartments, (4) The rooms for students' association and circles should be seperated from the dormitory. Fourth, to make the dormitory delightful, comfortable, cultural and emotional, the following measures should be adopted. In the surroundings, (1) to develop the hill at the back of the dormitory to athletic park. (2) to construct a promenade connecting a pier to College Road of Dae-Ban-Dong. (3) to make a road from the dormitory to a central library. (4) to change an aromatic trees field to grass and make it a resting place. In the inside, (1) to repair and improve a reading room, (2) to display the arts on the wall of corridors, (3) to set up curtains and place flowerpots. (4) to make each building have characteristic and cultural resting place Fifth, the followings to be set up and managed. (1) a clinic room. (2) store and music room. (3) telephone boothes in each building. (4) consultation office.