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Search took 0.00 seconds. Search: Posts Made By: bigphil
Forum: OpenFOAM April 30, 2013, 16:18
Replies: 16
Views: 4,476
Posted By bigphil
Hi Sangeeta, Apologies for the delay in...

Hi Sangeeta,

Apologies for the delay in replying.


With the directionMixed BC above you are forcing a surface normal gradient of 10! - I really don't think this is what you intended - this is...
Forum: OpenFOAM April 14, 2013, 15:18
Replies: 16
Views: 4,476
Posted By bigphil
I think that in this case the effective stress...

I think that in this case the effective stress essentially means the average stress, and using an approach similar to homogenisation is probably the correct method. For example, the stresses on the...
Forum: OpenFOAM April 11, 2013, 05:38
Replies: 16
Views: 4,476
Posted By bigphil
Hi Sangeeta, Sorry for the delay in...

Hi Sangeeta,

Sorry for the delay in replying.

That's good to hear it is working for you, how exactly did you solve your problem for future reference?

For the homogenisation, the stress and...
Forum: OpenFOAM April 7, 2013, 13:04
Replies: 16
Views: 4,476
Posted By bigphil
Sangeeta, OK thanks I understand your case...

Sangeeta,

OK thanks I understand your case better now.

So the case works with fixedValue BCs but the apparent E is too high - this is to be expected because of the shears - the model will seem...
Forum: OpenFOAM April 7, 2013, 08:52
Replies: 16
Views: 4,476
Posted By bigphil
Sargam, Your directionMixed refValue...

Sargam,



Your directionMixed refValue seems way too large, these are the normal displacements you are enforcing.
Also, your values for traction are very small and are essentially zero.
Have...
Forum: OpenFOAM April 6, 2013, 16:11
Replies: 16
Views: 4,476
Posted By bigphil
Hi Sangeeta, essentially yes, apply...

Hi Sangeeta,

essentially yes, apply fixedValue to the top and bottom with the values you have calculated.

But remember that when you use fixedValue you may get significant shear stresses on...
Forum: OpenFOAM April 6, 2013, 14:38
Replies: 16
Views: 4,476
Posted By bigphil
Hi Sangeeta, I presume the models are static...

Hi Sangeeta,

I presume the models are static i.e. you are ignoring inertia.
If this is the case, then your model setup is very unstable as you are only using Neumann (traction) boundary...
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