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김준섭(J.S. Kim),김규철(K.C. Kim),김기혁(G.H. Kim),장성철(S.C. Jang),우남섭(N.S. Woo),김영주(Y.J. Kim) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
This study have goal with conceptual design for offshore structures of high pressure drop control valve for localization valve for development accomplished with flow analysis based on provision of ANSI B16.34, ANSI B16.10, ANSI B16.25 In order to localize the Offshore structures high pressure drop control valve. This study is numerical analysis for zambil offshore project of high pressure drop control valve. The solver which ANSYS workbench used for offshore structures analysis. The working fluids assumed the glycerin(C3H8O3). The structural analysis used ANSYS which is a commercial code. Stress analysis result of internal pressure in valve showed lower than yield strength. This is expect to need more detail design and verification for stem and disk structure.
기존의 엔진룸을 이용한 신규 개발 디젤 엔진의 지지계 결정에 관한 연구
김규철(K. C. Kim),김주연(J. Y. Kim),안상호(S. H. Ahn) 한국자동차공학회 1998 한국 자동차공학회논문집 Vol.6 No.5
This paper presents the procedures and technique of the decision on the mount in a diesel engine development newly.<br/> To assess the vibration characteristics of the engine plus transmission, their inertia mo-ments are calculated for three engine versions, i.e., NA(Naturally Aspirated), TC(Turbochar-ged) and TCI(Turbocharged and Intercooled). These data are used to determine the mount layout and stiffness values affecting the noise quality of an engine as well as a vehicle.<br/> The main purpose of this paper is to design the .mount rubber having the optimal stiffness characteristics through the investigation of the calculation results and the mount conditions when an engine is installed in a vehicle using the existing engine mount room.<br/> Thus, this paper describes the optimal mount positions, rubber stiffnesses, natural fre-quency, mode shapes and so on using ADAMS program to apply the newly developed en-gines to three different vehicles<br/>
황승진,김규철(K.C. Kim),김기혁(K.H. Kim),장성철(S.C. Jang),김영주(Y.J. Kim),우남섭(N.S. Woo) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
This study have goal with conceptual design for Offshore Structures of high pressure control valve for localization. Gate valve for development accomplished with flow analysis based on provision of ANSI B16.34, ANSI B16.10, ANSI B16.25 In order to localize the Offshore Structures high pressure control valve. Flow decrease observed open valve that equal percentage flow paten which is general inclination of ball valve. Relation with flow and flow coefficient can not be proportional according to inlet pressure when compare with mass flow rate. Because flow coefficient have influence in flow and pressure difference. Namely, flow can be change even if it has same Cv value. The structural analysis used ANSYS which is a commercial code. Stress analysis result of internal pressure in valve showed lower than yield strength. This is expect to need more detail design and verification for stem and seat structure.
ALR변경에 따른 2상 내부 혼합형 노즐의 미립화 성능에 관한 연구
하만호(M. H. Ha),김규철(K. C. Kim),김남훈(N. H. Kim),남궁정환(J. H. NamKung),이삼구(S. G. Lee),노병준(B. J. Rho) 대한기계학회 2001 대한기계학회 춘추학술대회 Vol.2001 No.9
The Atomization Characteristics of two-phase internal mixing nozzle was investigated using 2-D PDPA system. To obtain the information of the nozzle, the mean velocities were measured at Z=10, 20, 50, 80, 120, 170㎜ from the nozzle exit. Moreover, SMD was along calculated at the same distance from the nozzle tip in order to describe the atomization characteristics according to the change of ALR. The ALR used in this experiment was changed from 0.1256 to 0.3238 and the mass rate of the liquid(water) was kept at 1.8g/s.
안상호(S. H. Ahn),김주연(J. Y. Kim),김규철(K. C. Kim) 한국자동차공학회 1998 한국 자동차공학회논문집 Vol.6 No.1
This paper presents the static analysis, the modal analysis and the forced vibration analysis on engine structures to find out the structure-borne noise sources by finite element method.<br/> The deformation of engine structures under the maximum combustion gas force was calculated through the static analysis, and the resonance possiblities were predicted by the modal analysis which ascertains mode shapes and the corresponding frequencies of engine global and its major components in consideration of the oil film stiffness inside main bearings. One hand, the major noise sources in engine surfaces were investigated with the forced vibration analysis by means of finding the transfer mobilities on engine surfaces due to the piston impact and the velocity levels due to the combustion in consideration of oil film stiffness and damping coefficients.<br/> Finally, the direction of engine structure-borne noise reduction can be estabilished by the above-mentioned analysis procedure and the reduction effect of cost on proto-type engine build-up is expected.