Study On Logistics Modeling And Simulation Of The Automobile Assembly Shop Based On Flexsim Platform

When competition of manufacturing enterprises turns to improve the production speed from expanding production scale and improving production quality, how to shorten the time between orders to delivery is the primary factor to win the market for enterprise. And whether the manufacturing facility layout of enterprise is reasonable directly influences its productivity and production period. As one of important branch of Industrial Engineering, the manufacturing facility design is to organize the facility of enterprise to improve the utilization of enterprise resources (human, equipments, materials, energy etc.) to achieve the efficient performance. The traditional method of facility design is mainly quantitative analysis combining with experience, this method is complex in computing and the design period is long, and whether the design plan is reasonable need to verify through real production, so it increases cost and risk, and doesn't adapt to the enterprise production. With rapidly development of system simulation technique, using simulation technique to the design, verification and analysis phases of facility design plans can effectively avoid risk of changing real facility layout.Firstly, this paper analysis the basic theory on manufacture logistics system, pus forward the logistics simulation principle discusses the schedule ways and analysis technology of manufacture layout in details and gives the value means on manufacture logistics system performance. Then it puts forward the Perti theory and analysis why the normal Perti Net can not fit the logistics modeling, educes the ESHLEP-N to modeling manufacture logistics system, points out the basic steps using ESHLEP-N to modeling manufacture logistics system. And introduce the Flexsim software.Second, it studies the convert means from ESHLEP-N models to Flexim models, designs the Flexsim interface function of Flexim models, especially studies logistics route layouts, manufacture time and setup time, rand breakout, plan, and assemble means in details. Through revising interface function and script function, this function can be realized. The aims of manufacture logistics models are to analysis simulation results and find out the problems on the whole produce lines. Aim at theses problems, finds out the solutions and simulate it again. Through the many time, it gets the rational production line. To this paper, after setting up the Flexsim models and validate it comparability. Then It runs the schedule plan and analysis the performance of some GONGWEI, adjusts it after analyzing. To the results, analysis the system states, discusses the bottleneck, puts forwards the reform measure.At last, the paper brings forward several feasible suggestions on the simulation output.