• 제목/요약/키워드: Dynamics Simulation

검색결과 4,035건 처리시간 0.034초

철도차량 동특성 해석을 위한 휠/레일 상호작용의 선형모델링 연구 (A Study on the Linear Modeling of Wheel/Rail Interaction for the Train Dynamics)

  • 박찬경;박기준;박준서;배대성
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 1998년도 창립기념 춘계학술대회 논문집
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    • pp.517-524
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    • 1998
  • A liner numerical model of the wheel-rail interation and the track geometry is developed for multi-body dynamics program. The simulation results are very simulation to these of VAMPIRE simulation. This program can be used for the analysis of train dynamic performance.

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산불 전파의 수치 시뮬레이션 (Numerical Simulation of a Forest Fire Spread)

  • 이명성;원찬식;허남건
    • 설비공학논문집
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    • 제20권2호
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    • pp.137-143
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    • 2008
  • In the present study, a forest fire spread was simulated with a three-dimensional, fully-transient, physics-based, computer simulation program. Physics-based fire simulation is based on the governing equations of fluid dynamics, combustion and heat transfer. The focus of the present study is to perform parametric study to simulate fire spread through flat and inclined wildland with vegetative fuels like trees or grass. The fire simulation was performed in the range of the wind speeds and degrees of inclination. From the results, the effect of the various parameters of the forest fire on the fire spread behavior was analyzed for the future use of the simulation in the prediction of fire behavior in the complex terrain.

Design and Implementation of Information Management Tools for the EDISON Open Platform

  • Ma, Jin;Lee, Jongsuk Ruth;Cho, Kumwon;Park, Minjae
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제11권2호
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    • pp.1089-1104
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    • 2017
  • We have developed an information management tool for the EDISON (EDucation-research Integration through Simulation On the Net) open platform. EDISON is, at present, a web-based simulation service for education and research in five computational areas, namely, nanophysics, fluid dynamics, chemistry, structural dynamics, and computer aided optimal design. The EDISON open platform consists of three tiers: EDISON application framework, EDISON middleware, and EDISON infra-resources. The platform provides web portals for education and research in areas such as computational fluid dynamics, computational chemistry, computational nanophysics, computational structural dynamics, and computer aided optimal design along with user service. The main purpose of this research is to test the behavior of the release version of the EDISON Open-Platform under normal operating conditions. This management tool has been implemented using the RESTful API designed in EDISON middleware. The intention is to check co-operation between the middleware and the infrastructure. Suggested tools include User management, Simulation and Job management, and Simulation software (i.e., solver) testing. Finally, it is considered meaningful to develop a management tool that is not supported in other web-based online simulation services.

유연체 동역학 모델과 전력전자 회로의 연동해석을 통한 단기통 왕복 압축기 거동해석에 관한 연구 (A Study on Dynamic Behaviour of Single Cylinder Reciprocating Compressor by Joint Simulation of Flexible Multi-body Dynamics and Electromagnetic Circuit)

  • 성원석;황원걸
    • 한국자동차공학회논문집
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    • 제20권1호
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    • pp.28-38
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    • 2012
  • The characteristics of vibration and noise of a compressor used for electric appliances have significant influence on the quality of the products. For improvement on the quality of electric appliances, investigations for understanding the dynamic behaviour of the compressor are essential. Since Virtual Lab for the dynamics model and MAXWELL for the electromagnetics model are separate software programs with no interface, the joint simulation of the models could not be performed. This study suggests a way to develop the compressor model capable of the joint simulation with MATLAB/SIMULINK linking a flexible multi-body dynamics model, a torque model, and an electricity control model. The compressor model is found to be able to perform I/O data transfer among the sub-models and joint simulation. The simulation results of the flexible body and rigid body dynamics models were compared to check availability of the joint simulation system. In addition, the simulated vibration and driving torque of the compressor mechanisms were compared with measurements. Through the simulations, the influence of springs and LDT on the dynamic behaviour of the compressor was examined. This study examines the influence of the dynamic behaviour of the compressor mechanisms through joint simulation of the flexible multi-body dynamics model and electromagnetic circuit allows analysis.