question

Cami avatar image
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Cami asked Jeanette F commented

manufacturing process and logistic

modelo, problema estibas.fsmGood afternoon, we have a problem in the model, when running this, in the part of the shelf, the pallets are not distributed in two per row, that is, they are all in the same place.

I attach the model, I would appreciate a prompt response.

FlexSim 22.0.16
processtimemanufacturinglogistic.
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Jeanette F avatar image Jeanette F ♦♦ commented ·

Hi @Cami, was Joerg Vogel's answer helpful? If so, please click the "Accept" button at the bottom of their answer. Or if you still have questions, add a comment and we'll continue the conversation.

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1 Answer

Joerg Vogel avatar image
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Joerg Vogel answered Jason Lightfoot commented

Dynamic pallet. A pallet size is without packed content. Lately in version 23 a pallet considers packed content as size of pallet. If you look for this problem on this site you find several examples to prevent this problem. I linked my solution. The involved pallet works, but it was a subject, I had with stacking in queues.

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Felix Möhlmann avatar image Felix Möhlmann commented ·

Since the number of pallets per slot is supposed to be fixed in this case (two per slot), I would suggest to simply add this as a condition to the Slot Assignment Strategy.

screenshot-2023-04-14-082118.png

I also noticed that the model becomes quite slow after a while. This happens because you have thousands of items waiting in the source. Whenever space becomes available in Rack10, the Pull Requirement (which includes the Slot Assignment Strategy) is evaluated for each of these items which slows down the model dramatically.

You can work around this by either using the interarrival time setting in the source (not create more than item in the source at a time) or by placing a queue with a maximum content of 1 inbetween the source and rack.

modelo-problema-estibas_1.fsm

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Jason Lightfoot avatar image Jason Lightfoot ♦♦ commented ·
If you need pallet stacking and unstacling use the autosizing pallet in the library posted here. This won't help with this post since you also have bottles in crates on the pallets.
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