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Start to run a model of a manufacturing system

Builder
Builder

I built a model with 5 machines and 4 buffers as attached. I've set the machine failures, processing time, and buffer capacity.

 

I would like to know how to setup the initial contents for each buffer. The initial contents of B1, B2, B3, and B4 are 32, 8, 8, and 8, respectively.

 

After that, I would like to run this model for an 8 hour shift, with 30 replications, and examine the confidence interval of the throughput of this manufacturing system.

 

Thanks.

14 REPLIES

Re: Start to run a model of a manufacturing system

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor
the easiest way is to use sources with the setting : Time of creation - Number Adjustable
Insert for each buffer a source with the initial number of parts into your frame.

You need also to include a source at the start of the process and a drain at the end.
Your experiments you can plan using the ExperimentManager (folder tools).
Steffen Bangsow
freelance simulation specialist  
web: www.bangsow.eu
mail: steffen@bangsow.net

Re: Start to run a model of a manufacturing system

Builder
Builder

Thank you for the reply.

 

However, I cannot find "experiment manager" in Tools folder. I attached a snapshot.

 

Re: Start to run a model of a manufacturing system

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

try manage class library --> tab Libraries

Steffen Bangsow
freelance simulation specialist  
web: www.bangsow.eu
mail: steffen@bangsow.net

Re: Start to run a model of a manufacturing system

Builder
Builder

Thanks. I add it. But it seems to be blocked when I try to use it. See attached snapshot.

 

Re: Start to run a model of a manufacturing system

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor
drag it into your frame...
Steffen Bangsow
freelance simulation specialist  
web: www.bangsow.eu
mail: steffen@bangsow.net

Re: Start to run a model of a manufacturing system

Builder
Builder

I cannot double click it, but I can drag it to the model. I need to define output. The output I will examine is the throughput. How can I configure this? Is there default variable by plant simulation or I need to define a new variable?

Re: Start to run a model of a manufacturing system

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor
the drain collects a lot of statistics, you could use as output: drain.statNumIn

And you need to set an end in the EventController
Steffen Bangsow
freelance simulation specialist  
web: www.bangsow.eu
mail: steffen@bangsow.net

Re: Start to run a model of a manufacturing system

Builder
Builder

The statistic I need is the final throughput after the model runs for 8 hour. I need to run 30 prelications. How should I configure this with eventcontroller and experiment manager?

Re: Start to run a model of a manufacturing system

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor
-set the end of the eventcontroller to 8:00:00
-in the Experiment Manager set drain.statNumIn as Output value
- set observations per experiment to 30 (= replications)
Steffen Bangsow
freelance simulation specialist  
web: www.bangsow.eu
mail: steffen@bangsow.net