Why do we simulate Tensile test ?
Why do we simulate Tensile test ?
(OP)
Hi All
I know it might be a basic question for you guys
but since I have not dealt with this , I would like to ask , we do the tensile test only when we have to know the material behavior, once we know that, why should we simulate it ? definitely we don't know the material stess-strain behavior if we have not tested if before
Thank you very much
I know it might be a basic question for you guys
but since I have not dealt with this , I would like to ask , we do the tensile test only when we have to know the material behavior, once we know that, why should we simulate it ? definitely we don't know the material stess-strain behavior if we have not tested if before
Thank you very much





RE: Why do we simulate Tensile test ?
When I am given uniaxial stress-strain data I will often perform a single element tension test to verify that I have defined the material model correctly in the FEA code. Takes 2 minutes and gives confidence in the model.
Dave
RE: Why do we simulate Tensile test ?
RE: Why do we simulate Tensile test ?
Not sure what you mean. For what I described:
- Take the uniaxial stress-strain data which you have generated or taken from the literature.
- Use it to define the appropriate material model (elastic-plastic, hyperelastic etc.) in the FEA code.
- Perform a single element uniaxial tension test to replicate the conditions under which the test data was generated.
- Verify that the FEA output matches the measurements from the test.
Just a simple test to check a material model is defined correctly. I'm sure there are other reasons to simulate a uniaxial tension test? Maybe it is useful to people who modelling damage/failure or developing user-defined material models?Good luck,
Dave
RE: Why do we simulate Tensile test ?
I think I need a bit more elaboration
let's say we have test results, with a yield stess at 320 MPa @☺0.02 of strain , then 500 MPa @0.1 strain and 800 MPa @2 (strain) - I know there are just three point , let's say we have a full diagram
then we do the analysis, I see the material has yielded at 800 MPa
If we assume that the correct and real UTS was 750 MPa , how am I gonna justify it with that single element analysis ??
RE: Why do we simulate Tensile test ?
If you define your material model using uniaxial test data and run a single element tension test, your FEA output should match your test output. If the they match, you have verified the material model. If they don't match you made a mistake defining the material model.
Dave
RE: Why do we simulate Tensile test ?
RE: Why do we simulate Tensile test ?
What part does not make sense?
Dave