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Re: Deformation not as excepted.
any error messages when running the problem? do you have soft spring or inertial relief enabled?
you didn't include the displacement results, but it looks like to me you got the warning "large displacements" and chose the option "no" to not run the model with large displacement. as such your results are probably not as expected.
if that isn't the case, do you see any difference if you run this as a quarter symmetry model instead of half? this should add some additional restraints to the model to help prevent any of the issues that would come with an unrestrained model.
this is all based on the assumption you've checked your setup and everything setup symmetrically.
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Re: Deformation not as excepted.
Thank you Jared, Please find my answer below.
Q: any error messages when running the problem? do you have soft spring or inertial relief enabled?
A: There were no error messages, nor have i used soft spring or inertial relief.
Q:you didn't include the displacement results, but it looks like to me you got the warning "large displacements" and chose the option "no" to not run the model with large displacement. as such your results are probably not as expected.
A: I did not get "large displacement warning. Pls refer the displacement plot pasted below.
Q: if that isn't the case, do you see any difference if you run this as a quarter symmetry model instead of half? this should add some additional restraints to the model to help prevent any of the issues that would come with an unrestrained model.
this is all based on the assumption you've checked your setup and everything setup symmetrically.
A: I have not tried quarter symmetry as the model geoemtry is not quater symmetric. My concerns is as the pressure loading is symmetric,why not the displacement.
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Re: Deformation not as excepted.
looks like a rigid body mode to me, so i'm surprised about your answers to the first 2 questions.
just for giggles, can you chop your model and make it a quarter symmetry and see what happens.
or add a restraint preventing rotation.
another test you might consider is modeling a simpler case and seeing if it behaves the same (stack up of 3 cylinders/plates). that one you could post online for the rest of us to take a look at.
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Re: Deformation not as excepted.
Thanks Jared for being ever so helpful...
i am working on running FEA by making the model quarter symmetric, i'll post the results soon.
Also can you please tell me as to what this rigid body mode is ??
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Re: Deformation not as excepted.
rigid body = the part moves instead of deforming
the small displacement solver can only handle so much of this before it starts outputting results that don't make sense. normally before it gets to that point it throws an error.
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Re: Deformation not as excepted.
Sandeep,
You show a no penetration contact on the blue side. Is there a similar contact on the cyan side?
The displacement plot looks like it is exaggerated considerably. How does it look when you do a true scale plot?
Jerry S.
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