undrained triax test of fully saturated material (using TriaxialStressController and FlowEngine)
Hi,
For my simulations it is no problem to do a drained triax test with this PFV options:
flow.bndCondIsP
flow.bndCondVal
I also want to do an undrained test, like this:
flow.bndCondIsP
flow.bndCondVal
Then I get this warning:
CHOLMOD warning: matrix not positive definite
something went wrong in Cholesky factorization, use LDLt as fallback this time
To solve this, I have to use at least one fixed pressure boundary condition or impose pressure at one (or more) cells, e.g.:
flow.imposePres
So the pressure of this cell will be constant during the calculation and in the end it is still a drained test, right?
If I do flow.clearImpos
Is there a trick to simulate an undrained test with FlowEngine?
Christian
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- Yade Edit question
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- Solved by:
- Bruno Chareyre
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