Dear Ansys Users,
I am doing a warpage simulation.
I have a bi-layer material. Simulation starts at 150°C, it goes down to 25°C. At 150°C, the material is straight (like a rectangular box). At room temperature (due to different CTE of the materials which constitutes the bimaterial), material...
Hi,
Apply displacement to the part /or load
Then select a node
check stress-strain response
by these values, you should be able to calculate the stiffness.
Best Regards,
Sartor
Hello everybody,
I am creating a model in APDL.
1)I create the geometry
2)I select my element (plane 183 for instance)
3)I save the database.
4)Now, I have prepared a macro where my material models were implemented.
When I click Material Props/Read from File: and then select my material macro...
Hello everybody,
I have a very basic question. After doing my simulation, I am not able to get back my data/see my BC/Results.
I will describe what I am doing step by step. Maybe somebody can tell me what I am skipping.
FIRST STEP
1)I opened the product launcher and type XX as jobname.
2)I...
Please take care about how you define the effects of thermal expansion.
it can be defined by three different ways in ansys:
-secant coefficient of thermal expansion
-instantaneous coefficient of TE
-thermal strain.
I would suggest that you go through the help file in order to understand what...
Linear elastic orthotropic, Hills potential, Multilinear isotropic hardening
well, max principal stress, we used to estimate failure location.
Best Regards,
Sartor
We were also surprised but that was exactly what we wanted to see at the beginning before investing money into some more complicated things.
FE-code does not know anything about our fiber layup.
We are not applying any failure criteria at the moment, although it seems like tsai-wu will work for...
I did not understand what you mean by tension and compression areas.
Imagine a normal bending case, bottom surface is under tension, and top surface (where I apply the dsplacement)is under compression.
Normal X is almost same as Max Principal.
I am just applying a displacement!
I attached an...
I totally agree with your general idea. That is how it is supposed to be done.
"If you're working in composites you have to tell the computer the fiber construction. typically it's a ply lay-up for a face of a surface/panel. typically there's a pre-processor that takes your fiber properties...
@kacarrol:
Sorry for the late reply. I did not have time to go over your document. However, I found something which I believe, would be helpful for you as well.
9. Solutions for anisotropic materials
http://www.engin.brown.edu/courses/en224/anis_general/anis_general.htm
I hope it helps you to...
@rb1957:
I totally understand your concern, however, I do not agree. We know our material. Before deciding if we need a code which describes our material, we would like to see what are the capabilities of the things that are already implemented in commercial FE-codes.
Best Regards,
Sartor
Actually,
When I simulate bending on an element(different geometry than a normal bending coupon), I have maximum principal at bottom (due to tension) and minimum principal at top (due to compression), which is also the case for normal bending coupon.
However, I have different values for Max (60...
you are right elabbasi, it is internally handled and the results (fem) are very well compared to experiments.
rb1957, I have defined a stress strain curve (NA).
Best Regards,
Sartor
Hello,
I am trying to simulate bending of a composite.
My compression strengths and tension strengths are different in all directions.
My question is: when I start applying the displacement (or load) during experiment, the contact point is under compression and at this point, my material...
@rb1957:
at the moment, it does not know!
The failure model that i would like to use has no connection with microscopic details. I need to see if I can already use the implemented failure criteria whether they can represent my material's behavior, or not.
If not, I need to go more for more...
@rb1957:
I have carbon fibers 0°/90°(x/y) and the composite behavior is non-linear.
Fiber breakage/pullout was seen after breakage.
according to linear fea, i could say that the failure might occur at some particular regions. And at those regions, I am looking for Normal X and XY shear. at the...
