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Distinguished Contributor
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Registered: ‎12-14-2011
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Pressure under foudation raft???

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10-05-2012 07:54 PM

Hi all.

I is prolem, I think Pressure under foudation raft >0. Why results Pressure Robot <0 ???????

2012-10-06_0939.png

Valued Mentor
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Registered: ‎09-07-2011

Re: Pressure under foudation raft???

10-07-2012 11:04 PM in reply to: athurD

Because it's a reaction?  Under vertical load, a pinned column will have +ve reaction.  So under applied load, a soil will have a +ve reaction too?

 

Distinguished Contributor
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Re: Pressure under foudation raft???

10-07-2012 11:52 PM in reply to: tony.ridley

Thank tony.

So now I have to do to pressure under the foundation raft <0 ??. This is an image of my model .

 

2012-10-08_1349_001.png

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Registered: ‎12-17-2010

Re: Pressure under foudation raft???

10-08-2012 12:27 AM in reply to: athurD

As you are supposed to tell in which direction the uplift is possible you should set UZ+ rather than UZ- (at least for a typical building :smileyhappy:).

 

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.



Artur Kosakowski
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Re: Pressure under foudation raft???

10-08-2012 01:54 AM in reply to: Artur.Kosakowski

Thank Artur.

i selection U+.

But why Run it too long, is there a way to make it run faster???

2012-10-08_1547.png

 

 

Distinguished Contributor
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Re: Pressure under foudation raft???

10-08-2012 02:10 AM in reply to: athurD

Hi. i is prolem.

How do I know choose U + or U- ??????

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Re: Pressure under foudation raft???

10-08-2012 02:11 AM in reply to: athurD

You can try to use the multi-threaded solver.



Artur Kosakowski
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Re: Pressure under foudation raft???

10-08-2012 02:14 AM in reply to: athurD

1. Check what is the orientation of the local Z axis of the panel

2. If you want to allow the panel to move (be uplifted) in the direction of the positive Z axis then you select UZ+. Otherwise UZ-.

 

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.



Artur Kosakowski
Distinguished Contributor
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Registered: ‎12-14-2011

Re: Pressure under foudation raft???

10-08-2012 02:16 AM in reply to: Artur.Kosakowski

Hi.

      "You can try to use the multi-threaded solver."

Sorry I do not quite understand, can you give me an picture example.

thank Artur

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Re: Pressure under foudation raft???

10-08-2012 02:57 AM in reply to: athurD

multi.PNG



Artur Kosakowski