Field variable dependence for hyperelastic materials in Abaqus
I am trying to degrade material constants for a hyperelastic mooney-rivlin material using a field variable. I am trying to follow the example syntax given below. (These are lines from the .inp file)
This syntax works well for elastic materials, so, I tried to use it for hyperelastic mooney-rivlin case as follows:
*HYPERELASTIC, MOONEY-RIVLIN, DEPENDENCIES=1
It seems like Abaqus does not recognize this. I get the following error message in my .dat file:
***ERROR: in keyword *HYPERELASTIC, file Job-5.inp, line-97: Unknown parameter: dependencies. The parameter may be misspelled, obsolete, or invalid.
Can someone tell me where I am going wrong?