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prestressed column with increasing load

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HStruct

Structural
May 21, 2006
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Dear FEA gurus,

I am wondering if somebody can help me with this situation.

1. I have a column (with 1000x1000x2000 units dimentions) compressed by a load of 100 units.
2. After the solution is done in ANSYS I want to keep the column in compression (prestressed) and add another compressive load of say 100 units.

It seems pretty simple but the the column is not holding the stresses due to first loading during second loading. I have tried Prestres option however doesnt seem to work.

Could anybody please suggest me how to do it?

-HMT
 
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