question

Taimur avatar image
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Taimur asked Felix Möhlmann answered

How to do the rework state step

I am creating the following model, but a I have little bit confusion with the steps 4,5,6 Could anyone please guide me accordingly. I wanted to know which object does this apply to and how to do it,

PS: I am beginner for flexsim

Model Building Exercise Description:

  1. The arrival rate of our shipments is actually described by the exponential distribution, with a location value of 0 and scale value of 120 seconds.
  2. The number of parts in a shipment is described by a distribution called duniform, with a minimum 2 and a maximum of 6.
  3. The Setup time is described by the triangular distribution; minimum time 1.5 seconds maximum of 4.5 seconds but most commonly (mode) 2.5 seconds.
  4. The processing time is described using the lognormal (mean/standard deviation version) distribution with a mean of 10 and standard deviation of 3.
  5. There is now a 20% chance parts will need to be reworked after processing and be sent back to the Queue.
  6. Assign a label on the output (OnExit) of the Processor specifying the rework status of the products (call it "ReworkState") and refer it to the port number (because the port number will define the rework status of the products for us; it would indicate whether the products needed to be reworked or not, through port number 1, we have products that do not require rework, while those passing through port number 2 - these are those that required rework).

Ouput:

What is the Throughput by Flowitem Rework State after 1 hour of work?

FlexSim 25.0.0
processormodelreworkdistribucion
5 |100000

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1 Answer

Felix Möhlmann avatar image
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Felix Möhlmann answered

You'd have two output connections from the processor. One goes to the next station and one goes back to the queue in front of the processor. In the "Send to Port" option of the processor use "Random > By Percentage" to send 20% of items back to the queue and 80% to the next station.

As the exercise text mentions, add an On Exit trigger to the processor and use the "Set Label" option to write the port through which the item leaves to a label on the item ("port" is variable in the code of the On Exit trigger, do not assume that this is possible in any trigger).

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