The simulation not detect the MTBFMTTR data

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question

Aliff asked Mar 15, '24 Jeanette F commented Mar 21, '24

The simulation not detect the MTBFMTTR data

Hello,

right now i try to run a simple simulation with the MTBF and MTTR data at the tank. Below is my simulation. Thtigger i use are same at all tank.

The problem is when i enter the MTBFMTTR data at tank f101 and c101, i didt get the breakdown time at the tank.

This is the data that i get. The data run with 100% without a problem. I though when we enter the MTBFMTTR data at the tank, it need to have a breakdown time.

What i want from the data is the critical equipment in the simulation, breakdown time of each equipment and availability of each equipment.

Thank you?

Software Version:

FlexSim 23.2.1

FloWorks

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Jeanette F ♦♦ commented · Mar 21 at 03:31 PM

Hi @Aliff, was Patrick Zweekhorst'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.

If we haven't heard back from you within 3 business days we'll auto-accept an answer, but you can always comment back to reopen your question.

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Answer 1 · 2024-03-15T08:55:57Z

Patrick Zweekhorst answered Mar 15, '24 Aliff commented Mar 21, '24

Hi @Aliff ,

For the down and resume function you will need to select the FloWorks options:

If you select this it should all work.

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Aliff commented · Mar 16 at 07:42 AM

Thank you @Patrick Zweekhorst , I can get the equipment to stop when it down.

Right now, when the equipment down, it is showing the empty time instead of breakdown time. Is it same the breakdown time and empty time?

In my case I like to know the breakdown time of the equipment.

For my next question, how I can I find the whole system utilization in the flexsim?

Thank you.

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Patrick Zweekhorst Aliff commented · Mar 18 at 09:13 AM

Hi @Aliff ,

The state is indeed not set to breakdown. The reason for this is that it is not always the case that the object goes into complete breakdown. It can be for example that the impact factor is 0.5, which means that the max rate for the object is only half the max rate.

If you know that the impact factor is 0, and you prefer to see the state breakdown you will need to set the state breakdown yourself. In this case I would use the MTBF breakdown function to set a label:

And set the label back to 0 in the On Repair.

With this I would use the OnRateChange event to check this label and if the tank is in break down set the state to break down, see the attached example model.
RateChangeExample_3.fsm

How would you define the whole system utilization? There is no general definition for this, so it is hard to answer this question.

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ratechangeexample-3.fsm (43.5 KiB)

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