• Title/Summary/Keyword: Manufacturing Simulation

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Mapping Digital Manufacturing Simulation to Synthetic Environment using SEDRIS (SEDRIS를 이용한 디지털 생산 시뮬레이션과 합성 환경 매핑)

  • Moon, Hong-Il;Han, Soon-Hung
    • Journal of the Korea Society for Simulation
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    • v.14 no.2
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    • pp.15-24
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    • 2005
  • The goal of a distributed simulation such as battle field simulation is to combine all kinds of simulations in the same synthetic environment and to make people interact at the same time. It is a key issue to share the same synthetic environment among simulations. To support reusability and affordability in the modeling and simulation area, DMSO(Defense Modeling and Simulation Office) of USA developed concepts such as HLA(High Level Architecture) and SEDRIS (Synthetic Environmental Data Representation and Interchange Specification). In the industrial simulation area, the digital manufacturing is the main stream. To reduce cost and to reuse simulation environment, the standardization becomes the focus of digital manufacturing. This study proposes to use SEDRIS to improve interoperability of manufacturing data. The simulation data of DELMIA, which is a leading commercial digital manufacturing solution, is mapped and translated into the SEDRIS transmittal format. Mapping of the manufacturing simulation data and the synthetic environment are implemented and verified through experiments.

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Agent-based Collaborative Simulation Architecture for Distributed Manufacturing Systems (분산 생산 시스템을 위한 에이전트 기반의 협업 시뮬레이션 체계)

  • Cha Yeong Pil;Jeong Mu Yeong
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2003.05a
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    • pp.808-813
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    • 2003
  • Maintaining agility and responsiveness m designing and manufacturing activities are the key issues for manufacturing companies to cope with global competition. Distributed design and control systems are regarded as an efficient solution for agility and responsiveness. However, distributed nature of a manufacturing system complicates production activities such as design, simulation, scheduling, and execution control. Especially, existing simulation systems have limited external integration capabilities, which make it difficult to implement complex control mechanisms for the distributed manufacturing systems. Moreover, integration and coupling of heterogeneous components and models are commonly required for the simulation of complex distributed systems. In this paper, a collaborative and adaptive simulation architecture is proposed as an open framework for simulation and analysis of the distributed manufacturing enterprises. By incorporating agents with their distributed characteristics of autonomy, intelligence, and goal-driven behavior, the proposed agent-based simulation architecture can be easily adapted to support the agile and distributed manufacturing systems. The architecture supports the coordination and cooperation relations, and provides a communication middleware among the participants in simulation.

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Verification of Manufacturing Process of PSC Box Girder Bridge Segment by 3D Simulation (3차원 시뮬레이션을 활용한 PSC 박스거더교 세그먼트 제작 공정의 검증)

  • Kim, Min-Seok;Son, Heung-Rak;Lee, Kwang-Myong;Park, Young-Ha;Park, Min-Seok
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2008.04a
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    • pp.235-240
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    • 2008
  • PSC box girder bridges are built through the repetitive manufacturing process of concrete segment. However, during the initial segment manufacturing stage, design change may occur frequently due to design errors and interferences between components, resulting in the extension of segment manufacturing period. This paper aims to verify the manufacturing process of PSC box girder segment by 3D simulation technique. All the components of a segment were modelled and assembled by simulation technique and then, some design errors were found and revised appropriately to optimize the manufacturing process of segment. Consequently, 3D simulation technique would be promising to improve the quality of the segment and to reduce its manufacturing time and cost.

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Computer Simulation : Simulation Languages and Application (컴퓨터 시뮬레이션 : 시뮬레이션 언어와 적용)

  • 박양병
    • The Magazine of the IEIE
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    • v.22 no.8
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    • pp.86-97
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    • 1995
  • Computer simulation is a powerful tool for the design and evaluation of manufacturing systems. This paper consists of two major parts. First, it presents a brief survey of simulation languages oriented towards the analysis of manufacturing systems, with their important properties. Second, it introduces a simple case of simulation application to a flexible manufacturing system(FMS).

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INSIMS : An Intelligent Simulation Generator for Manufacturing Systems (INSIMS : 시뮬레이션 코드 자동생성이 가능한 제조공적 전용 시뮬레이터 개발에 관한 연구)

  • 이건창
    • Journal of the Korea Society for Simulation
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    • v.5 no.1
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    • pp.67-79
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    • 1996
  • This paper proposes an intelligent simulation generator, called INSIMS, for manufacturing systems. The INSIMS provides an interactive dialogue interactive dialogue interface and code generation tools for modeling and code genration of manufacturing systems. The interactive dialogue interface helps non-expert simulation modeler specify manufacturing systems with ease. After completing the model construction processes, the modeling specifications are automatically converted into SLAM II codes by code generation tools. To validate the usefulness of INSIMS and to illustrate the modeling processes, an example system has been presented.

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Extending the DEVS formalism toward Geometrical Kinematic Modeling and Simulation for Virtual Manufacturing Environment (가상제조환경을 위한 형상기구학 모델링 및 시뮬레이션으로의 DEVS 확장)

  • 황문호
    • Proceedings of the Korea Society for Simulation Conference
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    • 1999.10a
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    • pp.24-29
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    • 1999
  • Proposed in this paper is a modeling and simulation methodology for a virtual manufacturing environment. Based on DEVS formalism[Zeigler 76], the proposed model, so called GKDEVS, is designed to descript the geometrical knematic structure as well as event-driven and continuous state dynamics. In terms of abstract simulation algorithm[Zeigler 84], the simulation method of GKDEVS is proposed for combined discrete-continuous simulation. Using the GKDEVS, and FMS model consisting of a turing machine, a 3-axis machine and a RGV-mounted robot is constructed and simulated.

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Manufacturing Line Optimization for Discrete Event Simulation and Genetic Algorithm (이산사건 시뮬레이션과 유전자 알고리즘을 이용한 제조업 공장의 라인 최적화)

  • Jeong, Young-Soo;Yim, Hyun-June;Jee, Hae-Seong;Lee, Kwang-Kook
    • Korean Journal of Computational Design and Engineering
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    • v.13 no.1
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    • pp.67-75
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    • 2008
  • In spite of rapidly increasing interests in digital manufacturing, there still lacks of a systematic approach in manufacturing line flow analysis via modeling and simulation; currently, the parameters for designing manufacturing line are defined by being solely based on engineers experiences. The paper proposes an application of the genetic algorithm to a discrete event line simulation finding optimal set of parameters for manufacturing line balancing problem. The proposed method has been applied to two example problems-one is a simple manufacturing model and the other for shipyard industry-in order to demonstrate its validity and usefulness.

The Development of Virtual Simulator for Agile Manufacturing System (민첩 생산 시스템을 위한 가상 시뮬레이터 개발)

  • 차상민
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2000.04a
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    • pp.478-483
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    • 2000
  • In this study to cope with the decreasing product's life-cycle a virtual simulator to realize the simulation environment similar to a real manufacturing line is developed. The developed simulator plays a role in reducing the product conversion time by alternating manufacturing components and work plans on the simulation as manufacturing lines change and actuating a virtual manufacturing lines change and actuating a virtual manufacturing line before a real production. The developed simulator realized a virtual manufacturing line on the simulation using various manipulators and work cells as manufacturing components. Also It can be shown that the simulator can cope with rapid change of a manufacturing line by developing a interface that a separate process is managed for each manufacturing module and a manipulator component and a work cell are changed for a user to become convenient to teach tasks of each work module. using Microsoft Visual C++ 6.0 and OpenGL of Silicon Graphics for libraries to realize 3-dimensional graphic and constructing a database system, a hybrid type of hierachical and relational model to develop a progra that has efficiency and standardization.

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An Integrated Simulation Method to Support Virtual Factory Engineering

  • Zhai, Wenbin;Fan, Xiumin;Yan, Juanqi;Zhu, Pengsheng
    • International Journal of CAD/CAM
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    • v.2 no.1
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    • pp.39-44
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    • 2002
  • This paper presents a structure and architecture of an integrated simulation method (ISM) to meet the requirements of virtual factory engineering (VFE). Combining CAD, VR and discrete event simulation techniques, the ISM provides static and dynamic simulation functions for implementation of VFE throughout the lifecycle. The static simulation can be used to evaluate the factory layout. The dynamic simulation enables us to evaluate ergonomics of factory, process performance of production system, feasibility of production plan and operation of factory, and to train operators safely, which cover the whole VFE lifecycle. The principles of the key techniques of VFE, including virtual factory data management system (VFDMS), static and dynamic simulation, are also discussed. To demonstrate and validate the ISM, a case study has been carried out in an assembly factory.

Implementation and Applications of Simulation Based Digital Shipyard (시뮬레이션 기반 디지털 조선소 구축 및 활용)

  • Han, Sang-Dong;Ryu, Cheol-Ho;Shin, Jong-Gye;Lee, Jong-Kun
    • Korean Journal of Computational Design and Engineering
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    • v.13 no.1
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    • pp.18-26
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    • 2008
  • Shipbuilding industries have been struggling to reduce production time and cost of their products in many aspects. Manufacturing systems have been changed, new production lines and robots have been installed, and new planning and scheduling systems have been adopted in order to achieve shorter time-to-market and higher productivity. Simulation based manufacturing, digital manufacturing, or virtual manufacturing simulation, whatever the name means, is an approach to achieve such a goal. In order to improve productivity in a shipbuilding process at a shipyard, a digital shipyard development has been driven. This paper proposed how to implement the digital shipyard, what to do with it, and what to obtain from it. This digital shipyard will help simulate and optimize the entire shipbuilding life cycle with its virtual environment through shipbuilding process from the initial development stage to the launch.