• Title/Summary/Keyword: Production logistics simulation

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Simulation of Block Logistics at a Big Shipyard (대형 조선소의 블록 물류 시뮬레이션)

  • Song, Chang-Sub;Kang, Yong-Woo
    • Korean Journal of Computational Design and Engineering
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    • v.14 no.6
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    • pp.374-381
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    • 2009
  • To meet the soaring demand recently, South Korea big shipbuilders are examining two things. One is new investment in plant and equipment. The other is replacement of production resources. Considering plant & equipment investment and replacement of production resources, even if actual production ability would be enough, the real output could be affected by limitation of logistics with lack of analysis. As we set up big shipyard in virtual space, we could perform actual production by using confirm production plan in virtual space. We've analyzed the load of block stock, load of road and load of transporter for logistics effects are followed by production increase. This research is to determine the possible problems of those analyzed results and to present the resolution using the current layout. And then modified yard layout, we reanalyzed previous three logistics effects. This simulation model could help administrator to make rational decision for changing yard layout.

A Development of Reverse Supply Chain Simulation Model Considering a Recycling (재활용을 고려한 역공급사슬 시뮬레이션 모델 개발)

  • Lim, Seok-Jin;Park, Byung-Tae
    • Journal of the Korea Safety Management & Science
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    • v.11 no.4
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    • pp.193-199
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    • 2009
  • Recently, an industrial production-distribution planning problem has been widely investigated in Supply Chain Management(SCM). One of the key issues in the current SCM research area is reverse logistics network. This study have developed a simulation model for the reverse logistics network. The simulation model analysis reverse logistics network issues such as inventory policy, manufacturing policy, transportation mode, warehouse assignment, supplier assignment. Computational experiments using commercial simulation tool ARENA show that the real problems. The model can be used to decide an appropriate production-distribution planning problem in the research area.

Research on a simulation-based ship production support system for middle-sized shipbuilding companies

  • Song, Young-Joo;Wo, Jong-Hun;Shin, Jong-Gye
    • International Journal of Naval Architecture and Ocean Engineering
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    • v.1 no.2
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    • pp.70-77
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    • 2009
  • Today, many middle-sized shipbuilding companies in Korea are experiencing strong competition from shipbuilding companies in other nations. This competition is particularly affecting small- and middle-sized shipyards, rather than the major shipyards that have their own support systems and development capabilities. The acquisition of techniques that would enable maximization of production efficiency and minimization of the gap between planning and execution would increase the competitiveness of small- and middle-sized Korean shipyards. In this paper, research on a simulation-based support system for ship production management, which can be applied to the shipbuilding processes of middle-sized shipbuilding companies, is presented. The simulation research includes layout optimization, load balancing, work stage operation planning, block logistics, and integrated material management. Each item is integrated into a network system with a value chain that includes all shipbuilding processes.

A Digital Twin Architecture for Automotive Logistics- An Industry Case Study

  • Gyusun Hwang;Jun-hee Han;Haejoong Kim
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.18 no.8
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    • pp.2399-2416
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    • 2024
  • The current automotive industry is transitioning from Internal Combustion Engine (ICE) vehicles to Electric Vehicles (EVs), adopting a mixed assembly production approach to respond to fluctuating demand. While mixed assembly production offers the advantages of lower investment costs and flexibility in responding to changing demands, the supply of EV components requires more extensive provisioning compared to ICE vehicle components, potentially leading to unexpected issues such as congestion of transport vehicles. This study proposes a digital twin system architecture that uses Discrete Event Simulation (DES) and Business Intelligence (BI) tools to specifically address logistics challenges. The proposed architecture facilitates real-time, data-driven decision making across three layers; Data source, Simulation, and BI. It was implemented in factories engaged in the mixed assembly production of ICE and EV vehicles. The simulation challenges involve a tier 1 vendor supplying parts to Korean automobile manufacturers that produce both ICE and EV parts. A total of 240 scenarios were created to run the simulations. The deployment of the proposed architecture demonstrates its capability to quickly respond to diverse experimental situations and promptly identify potential issues.

Simulation Anaysis for Determining Location and Size of Logistic Network (물류 네트워크 구축을 위한 입지 및 규모 선정을 위한 시뮬레이션 분석)

  • Jeong, Suk-Jae;Lee, Jae-Jun;Kim, Kyung-Sup
    • Journal of the Korea Society for Simulation
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    • v.14 no.3
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    • pp.67-77
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    • 2005
  • Logistics network of the enterprise is defined to determine the optimal node and link considering the production, inventory and transportation based on the demand forecasting. This study consider the optimal logistics network of A painter company which maintain the existing transportation network and plan to relocate its plants and build new distribution centers. For this, we design possible alternative scenarios and install the simulation models for analysis of each scenario. The result of simulation will help the proper logistic network and determining the size of distribution center further.

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A Study on the improvement of procurement logistics for synchronous manufacturing (동기화 생산을 위한 조달물류 개선에 관한 연구)

  • Yoo, Sung-Hee;Jang, Jung-Hwan;Zhang, Jing-Lun;Lee, Chang-Ho
    • Journal of the Korea Safety Management & Science
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    • v.15 no.4
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    • pp.261-267
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    • 2013
  • In automobile company it is needed to establish the collaborative relationship between the assembly company and the part manufacturing company. In this paper we established the improvement for the procurement logistics and logistics in assembly company and thus we derived the near optimal procurement cycle through the simple EXCEL simulation and the improved inventory management method for H automobile company in CHINA. At this time we adopted the pull manufacturing process instead of push manufacturing process. We resulted that the manufacturing activity of both companies was stabilized and the usage of storage area in assembly company was reduced by 50%, especially it was reduced by 100% in the case of directly delivering the parts to assembly line through the third party logistics company.

Scheduling Simulator for Semiconductor Fabrication Line (반도체 FAB의 스케줄링 시뮬레이터 개발)

  • Lee, Young-Hoon;Cho, Han-Min;Park, Jong-Kwan;Lee, Byung-Ki
    • IE interfaces
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    • v.12 no.3
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    • pp.437-447
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    • 1999
  • Modeling and system development for the fabrication process in the semiconductor manufacturing is presented in this paper. Maximization of wafer production can be achieved by the wafer flow balance under high utilization of bottleneck machines. Relatively simpler model is developed for the fabrication line by considering main characteristics of logistics. Simulation system is developed to evaluate the line performance such as balance rate, utilization, WIP amount and wafer production. Scheduling rules and input rules are suggested, and tested on the simulation system. We have shown that there exists good combination of scheduling and input rules.

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Development of the Packaging Specification Design System Based on Web Online Packaging IT Service (온라인 기반의 패키징 IT 서비스를 위한 패키징 디자인 사양 설계 시스템 개발에 관한 연구)

  • You, Yeon-Hwa;Jang, Dong-Sik;Park, Sang-Hee;Shim, Jin-Kie;Lee, Jun-Young
    • Journal of Information Technology Services
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    • v.11 no.2
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    • pp.275-289
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    • 2012
  • Although the specification of packaging box is one of the most important process to be considered before deciding cost in terms of production and logistics, there are no efficient services in our country at this time as such the making decision only through the empirical knowledge. In this research, we have developed the packaging specification design system based on the web online packaging IT service. The developed system was advanced from the existing-inefficient process of deciding the specification of packaging box, and which can decide the specification of packaging box considering the efficiency of logistics through use of IT based tool. Therefore, this study shows applied cases of normalized packaging process through the obtained packaging design simulation program. The packaging specification design system can provide the simulation and user interface. Those could calculate the specification of packaging box(packaging box size, packaging box quantity, packaging box pattern, packaging compressive strength, packaging cost etc.) considering the efficiency of logistics.

A Simulation Analysis on the Assembly System of Mobile Bath Vehicles (이동식 목욕차량의 조립시스템에 대한 시뮬레이션 분석)

  • Chung, Hoyeon
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.44 no.2
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    • pp.93-101
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    • 2021
  • The purpose of this study is to analyze the adequacy of production capacity of the assembly process system of mobile bath vehicle's top box panel and process design through a simulation analysis. Towards this end, the layout of the facility designed with pre-verification job using a simulation modeling and an experiment, and facility, logistics process, and personnel input method were made into a simulation model, and the design system's adequacy was evaluated through an experiment. To produce 120 mobile bath vehicles annually, it was analyzed that 14 general workers and seven skilled workers were adequate through the experiment. It was also identified that three painting process lines carried out through outsourcing were adequate. Production lead time was 201.7 hours on average and it was 230 hours maximum. To meet customer delivery service level of 95% within the deadline when establishing a customer order and vehicle delivery plan, it was analyzed that more than 215 hours of lead time is needed minimum. If the process cycle time is reduced to 85% upon system stabilization and skillfulness improvement, it was analyzed that annual output of 147 vehicles can be achieved without additional production line expansion.

System Dynamics Inventory Model with Imperfect Inspection and Reverse Logistics (품질검사의 불완전성과 회수물류를 고려한 시스템 다이나믹스 재고 모형)

  • Yu, Seung-Ho;Park, Myeong-Seop
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2006.11a
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    • pp.391-402
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    • 2006
  • Most previous studies considering inventory models for imperfect quality assumed that defective items could be completely detected by inspection and fixed before delivery to customers. This makes it difficult to adopt their research results to practice. This study reduces the assumption of perfect inspection, and presents an inventory model considering reverse logistics caused by imperfect inspection. System dynamics model is used to describe complex and dynamic problem and to show the effect of imperfect inspection on profit by simulation. Then, this article provides a guideline for the inspection policy which provides the maximum profit.

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