Elastic modulus as a function of relative density
Elastic modulus as a function of relative density
(OP)
Hi,
I am totally new to writing USDFLRs. I know I need an input file and a subroutine. Do I write the input from scratch or can I obtain that from my model. I am then trying to make the elastic modulus as a function of the relative density. I am assuming this is similar to the examples given for modulus as a function of strain? Say for example E = 2*RD + 2. If anyone could write an example that would be amazing. My case is just a plate with a porous metal plasticity relative density of .9. Once this is done, if I run a job with this would the resulting stress/strain curve have a new slope based on my relation?
Thanks so much.
I am totally new to writing USDFLRs. I know I need an input file and a subroutine. Do I write the input from scratch or can I obtain that from my model. I am then trying to make the elastic modulus as a function of the relative density. I am assuming this is similar to the examples given for modulus as a function of strain? Say for example E = 2*RD + 2. If anyone could write an example that would be amazing. My case is just a plate with a porous metal plasticity relative density of .9. Once this is done, if I run a job with this would the resulting stress/strain curve have a new slope based on my relation?
Thanks so much.





RE: Elastic modulus as a function of relative density
RE: Elastic modulus as a function of relative density
RE: Elastic modulus as a function of relative density
The Cap model should allow you to get where you want but the corner behavior is difficult with no assurance of local convexity. A Cap with a hyperelastic user routine sounds like a difficult problem to tackle. Specific preform test models are the best approach to avoid winging it on general problems. DCT was the forerunner on this approach, so thanks for the recollection. You will plough through it, keep plugging.
I believe the Cam routine allows for a one-sidedness and this may also lend a resolution that can be satisfactory, especially if you are modeling plies where the bidirectional wetting may poorly represents the adhesion behavior.
RE: Elastic modulus as a function of relative density