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정재준(Jae Joon Jeong),한동엽(Dong Yub Han),김용일(Yong Il Kim),이재원(Jae Won Lee) 대한공간정보학회 2001 한국공간정보학회지 Vol.9 No.3
Urban growth patterns have occasionally not coincided with planning of the policy makers or urban planners. So it is necessary in the planning step to predict the area to change to urban from rural. In this study, we aim to predict urban growth with cellular automata, a system modeling a dynamic phenomenon. Seoul metropolitan area (SMA) is selected as research area, and urbanized area of SMA has grown rapidly during last 4 decades. Applying the model, urban growth characteristics to date from 1972 are analyzed, and urbanized area maps to the year 2050 are predicted. In this study, the map of urban growth prediction is produced considering urban growth trends to date and some physical factors. And it is considered that the results of the developed model will be used as input data in urban growth prediction systems, which should include more data of socioeconomic and political sides in addition to physical sides.
초기응력을 고려한 SMART 원자로의 정상운전하중 해석
정재한(Jae Han Jeong),조상순(Sang Soon Cho),김동옥(Dong-Ok Kim),김태완(Tae-Wan Kim) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.4
The purpose of this study is to develop a finite element analysis model to assess the structural safety of SMART under normal operating conditions. The normal operating analyses should consider not only the deadweight due to the gravity, but also the distribution of pressure and temperature given from the reactor safety analyses. FE model have adopted the axisymmetric FE model since the whole structure of SMART is too complicated to be modeled as 3D solid one. The FE analysis is performed by using the general purpose finite element code ANSYS. This paper deals with the analysis of the deadweight to validate the confidence of the FE model developed for the normal operation analysis. Finally, this paper shows the evaluation results of the accuracy of the developed axisymmetric FE model by comparing the analysis result with the real mass of SMART.