Input Data Requirement for Manufacturing Simulation Model

[hoangdung]

Dear Elammers!

Thank you for your useful information. i had a copy of this book already.
but its too old. Because its very very difficult to find a book like that in VietNam (im a IE engineer).
Expecially, IE career is not polular here, there is only one university which trains about IE. Could you scan this book for me ( just asking)?

Milllions of thanks for your help!

[abo_3abd]

Hello i want your help plz to make project about arena simulation for my univesity my problem is data .
where i can get it ?

[ewilliams]

You will need (to begin with) all cycle times for the operations on the two lines, positions and sizes of all buffers on those lines (if any!), the speeds, lengths, and parts capacities of the conveyors, whether the conveyors are accumulating or non-accumulating, the arrival rate of parts to this system, information on the frequency and duration of all downtimes, considerations of logic flow (is part flow strictly upstream-to-downstream, or can parts "return upstream" (e.g., they have failed an inspection and go back for rework)), all rules of service priority (are they ever different from first-come-first-served [FCFS], schedule of operations (lunch breaks, coffee breaks, number of shifts), etc. Some things the hedging "etc." might cover are availability of labor (if some operations are manual), the methods of material handling (in addition to the conveyors, are there any forklifts or AGVs in use, etc.) There's that "etc." again! But these items will give you a good start and put you well on the road to simulation success. As a 30-year veteran of simulation, after meeting with a client to ask a series of detailed questions about the system to be simulated, I always ask, as we're about to arise from the meeting table, "What important questions have I forgotten to ask you?" That is my metaquestion -- literally, a question about questions.

[ewilliams]

Another strong player (especially since a major release 7 recently) is the simulation software Extend. Extend is particularly strong for models in which continuous and discrete concepts must be intertwined (e.g. fluid flows continuously from Tank 1 to Tank 2 until Tank 2 reaches a certain level -- then a valve closes (open versus closed is discrete) and the flow rate drops suddenly and discontinuously to zero. Here is another situation easy to model in Extend and difficult in other packages: a ship enters a dock and 2 cranes begin to unload it. After both have worked for awhile, one breaks down and the other keeps working. A little later, the broken crane is repaired and returns to help the first one. When will the ship be completely unloaded of its cargo?

[rwilcox]

Since a textbook for Arena was mentioned earlier in this thread, is there a textbook on simulation which uses Extend as its "explanatory vehicle"?

[ewilliams]

The text "Business Process Modeling, Simulation, and Design" by Manuel Laguna and Johan Marklund is Extend-based. As the title indicates, this text is directed to management-science (not IE) curricula, but the ideas and concepts transfer readily.

[dkrahl]

I will start by stating that I work at Imagine That, the developers of ExtendSim (the simulation software previously known as Extend). If you would like a reference on ExtendSim, take a look at the ExtendSim manual. We have worked very hard to make it readable, complete, and useful. Its not intended to be a textbook, but it does have all that you should need to learn about ExtendSim. You can download a copy (.pdf) from our web site (www.extendsim.com).

dave krahl