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산불 열영향 범위 산정을 위한 실험 및 FDS 데이터 비교
김형식 ( H S Kim ),강영진 ( Y J Kang ),김장환 ( J H Kim ),김경하 ( K H Kim ),이병두 ( B D Lee ),김정훈 ( J H Kim ) 한국안전학회(구 한국산업안전학회) 2014 한국안전학회지 Vol.29 No.4
This research deals with the combustion experiment of pine trees, which are the most representative species in Korea. Experimental data are compared with theoretical ones using Fire Simulation Program(FDS). It is considered that horizontal/verticaltemperature distribution and radiant heat influence on adjacent areas in fire scenes. The linear function for separation distance totemperature was drawn by applying Stefan-Boltzmann``s law; y=112.13133×(σT4)-0.52916 for calculating the separation distance. Incombustion experiment, the radiant heat came to 1.4∼1.5kW/㎡ in case of the separation distance by one meter. The numerical valuesmean that human body show the critical level of pain after one minute without a protective equipment.
4WD용 비스코스 커플링 특성 해석(1) - 정상상태 전달토크
이정석(J.S. Lee),김경하(K.K. Kim),김현진(H.J. Kim),김현수(H.S. Kim) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_1
This research describes a combination of a linear vehicle handling model and a nonlinear tire model. The first section describes the power steering system dynamics and a 5 D.O.F. vehicle handling model. The second section of this paper presents a nonlinear tire model. Comparing the results from the combination of the power steering system model and a linear vehicle handling model and those from the combination of the power steering system. a linear vehicle handling model and a nonlinear tire model with the experimental data, this vehicle handling model with a nonlinear tire model will be better understood at higher lateral acceleration maneuvers. Thus. this vehicle handling model with a nonlinear tire model will attempt to provide enhanced driver realism to a STI driving simulator.<br/> <br/>