Thanks for the suggestion. I have looked into using FEBio, it has a very good and straightforward way of implementing biphasic materials. But our model is developed in Abaqus and it has too many pieces for us to be able to port it at this point.
Do you think defining an element in VUEL would...
My goal is to use a biphasic poroviscoleastic material model for cartilage. But the C3D8P element type is only accessible via the implicit analysis. If I were to use VUMAT to code the biphasic behavior, the fluid pressure term won't be provided or accessible like it is in UMAT.
So my question...
IceBreaker,
what I meant was: even though the *amplitude may help with the high number of loadings, it still won't help me get rid of 150 time steps! I am trying to find a way to cycle through those 3 step; if so, then no need to define 150loads or use *amplitude.
I have to add: But if I don't...
IceBreaker,
I don't think I can, cuz I need the subroutines to do their thing after each loading, so having several steps is unavoidable as subroutines only run after each step.
btw i saw you were wondering why does usdfld run twice after each step. could you find the answer? it is really...
plain and simple: I have 3 seperate Static steps (each with their own loading conditions) and I want ABAQUS to run them in a loop for 50 times. how can I get this done?! i.e. step1,step2,step3,step1,step2,step3,...
more info: each step should be run for 1 increment, so the whole analysis should...
Tina,
even if there is a code out there, you have to search really hard in thesis databases to find one. finding an "algorithm" would be easier though, and you can write your code based on that algorithm.
And about your question on abaqus command, i couldnt understand if you are looking for the...
Ok I solved the problem and I am going to write it here for future researchers so that it wiil save them a few days.
In bone remodeling applications, if you are using USDFLD for calculating and updating the elements' Young Modulus based on strain energy density (SED),
You have to request "ENER"...
IceBreakerSours,
We don't have a Simulia Support Center in our country, and they won't provide any form of support to us due to some sanctions!
but thanks anyway [thumbsup2]
IceBreakerSours,
I checked Simulia Learning Community, navigated in its subsections for hours, but I didn't find "the page that talks about bone remodeling". Can you please provide me with a link?
Thank you really. Actually I had found that one (took me hours, how did you find it so quickly?)...
IceBreakerSours,
thanks for your input.
I emailed Simulia, no answer.
I searched for days/hours, no luck on finding a useful code in published materials.
Thank you Mustaine3,
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About density, is there a way around this? The bone's density is a function of Strain Energy Density and I need it to change. :-|
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Your point about ESEDEN being a whole element variable is a valid point, my mistake.
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But even if I try using SENER, I get the error...
I am using usdfld to simulate the bone remodeling response. This is the subroutine that SIMULIA suggests for this application, although many researchers use UMAT.
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Using USDFLD, I want to use a "look up table" to relate Young's Modulus ( E ) and Density (ro) of the material, to "Strain Energy...
