Barrier direction

Barrier direction

patrick_zweekhorst
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Message 1 of 4

Barrier direction

patrick_zweekhorst
Advocate
Advocate

[ FlexSim 19.0.2 ]

Hi,

We found something strange where we are not sure if it is behaving as intended or if it is a small bug. We cut a barrier in 3 different pieces and change the directions where you are allowed to pass through the barrier (see picture). We expected the operator to take the green route, but it takes the red route. Is that correct?

18600-barrier.png

Thanks,

Patrick

barrier3.fsm

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Message 2 of 4

Matthew_Gillespie
Autodesk
Autodesk
Accepted solution

You have to look at the grid to really tell what's going on (Click on the grid.png link to see the grid better). Notice that the grid points along the top of the barrier are all plus shapes. This means that a traveler can cross from that top row down into the barrier at any point. Once the traveler reaches the first row of grid points within the barrier he only travels left as you would expect. This is all working as expected.

18602-grid.png

If you stretch the top part of the barrier up some more then you'll see the traveler take the green path.



Matthew Gillespie
FlexSim Software Developer

Message 3 of 4

philboboADSK
Autodesk
Autodesk

Patrick,

To add to Matthew's explanation, it looks like what you are trying to do is actually this:

18603-try1.png

You need more horizontal conditions, like this:

18604-try2.png

Your confusion probably comes from the fact that a barrier that isn't split (and hasn't changed its pattern) changes the outer nodes so that you can't go onto that barrier from any direction.

A split or pattern barrier only affects the grid nodes that are within the barrier. It doesn't affect any nodes outside the barrier:

18607-outernodes.png

We kept the functionality of the un-split barrier affecting its outer nodes for backwards compatibility and ease of creation of simple barriers.

If you use the new split/pattern feature, you need to account for the fact that it behaves differently than the un-split barriers with regards to the nodes just outside of the barrier.



Phil BoBo
Sr. Manager, Software Development
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Message 4 of 4

patrick_zweekhorst
Advocate
Advocate

Hi Phil,

Thanks for your extra explanation. This will help with what we wanted to model

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