I have an exercise at my study where we are suppose to model a dogbone test specimen in tensile testing. to see how the crack propagates. We are supposed to use Johnson Cook method. The goal of the exercise is to see if we can put the parameters in Abaqus and see if we can get a somewhat realistic answer and interpret the result.
Currently i have, defined:
Density,
Elastic,
plasticity -Johnson cook parameters (A,B, n, m , c etc.)
- Rate dependant ( C, epsilon dot)
Johnson cook damage (d1-d5)
It is encastered at one end and is displaced at the other.
When submitting job the specimen is elongating but never fracturing.
Do anyone have a clue to why the specimen doesnt break?
I have no idea what to do?
This is a very interesting question. The sample tends to have fully relaxed to act as a fluid. How about increasing the sample's elasticity or decreasing its plasticity to make it more difficult to relax?
Jingqing Li If you want to see the project file I will add it below.
Refer to the Mullins effect in elastomers and the phenomenon of creep. Study the variation of the internal energy of the bone as a function of strain By following these directions you will bring a completely new perspective to traumatology. This topic interests me. Let me know if you want to continue
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