http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
6속 자동변속기용 레펠레티아 유성 치차의 동력 해석에 관한 연구
박진홍(J. H. Park),심재경(J. K. Shim),강봉수(B. S. Kang) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
In gear-train design, power-flow analysis is a very important process. The method for power-flow analysis apply the power balance equation and torque balance equation to each fundamental circuit. Then, the equation are solved simultaneously to determine the power-flow in planetary gear train. In this paper we perform power-flow analysis of a 6-speed automatic transmission. With this results are used to represent block diagram. In addition, the efficiencies of epicyclic inversion of the 6-speed automatic transmission is obtained.
이준모(J. M. Yi),심재경(J. K. Shim) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
Automotive suspension systems are three-dimensional mechanisms; they must be analyzed as three-dimensional mechanisms. Three-dimensional motion can be described by screw system. In this article, the instantaneous screw axis of a multi-link suspension system is derived in terms of joint installation positions of the system. In order to determine the instantaneous screw axis of the wheel hub relative to the vehicle body, the wheel hub angular velocity and the linear velocity of a point on the wheel hub relative to the vehicle body should be obtained. For this purpose, the velocity constraint equations of R-S, S-S and S-C link are derived. Using these equations, the instantaneous screw axis and the suspension parameters are represented in terms of the installation positions. The sensitivities of these analytically represented suspension parameters can be analyzed by direct differentiation. As an example. the sensitivities of a 5 S-S multi--lik suspeension systm aranad.<br/>
나상권(S.K. Na),심재경(J.K. Shim),박희호(H.H. Park),이성준(S.J. Lee),전승배(S.B. Chen) 한국전산유체공학회 2010 한국전산유체공학회 학술대회논문집 Vol.2010 No.5
It is very difficult to understand and estimate the heat transfer and flow characteristics in the combustor, which is one of main components in the Auxiliary Power Unit (APU), because its flow filed has very complex structure. In this paper, specified is characteristics of injection and flow through different air holes in the liner, which consist of large circular holes, film cooling holes, and tangential air swirl holes. The durability of the liner depends on whether the surface of the liner is exposed to the hot gas over 1000℃ of a temperature or not. It is proved that the locations of hot spots estimated from the calculation using CFD are matched well with that from the test. In this study, CFD simulations were performed to examine the heat transfer and temperature distributions in and about a liner wall with film cooling on the wall. This computational study is based on the ensemble average continuity, compressible Navier-Stokes, energy, and PDF combustion equations closed by the standard k-ε turbulence model with standard wall functions for the gas phase and the Fourier equations for conduction in the solid phase.