Hi all,
I am trying to run a VUMAT subroutine for isotropic hardeining, whenever I input the command "abaqus j=inp_name user=subroutine_name " the analysis begins, the ODB file is generated but in few secs the analysis exits with an error, and the error is..

Abaqus Error: The executable C:\ABAQUS\6.7-1\exec\explicit.exe
aborted with system error code 5.

It also says...

Hello everyone, I am testing a bio degradable material for bone implants. I have to test its "Dynamic Imact behaviour" using "Split Hopkinson Pressure bar", I have done the experiment and have the results. Now I need to simulate the same using "Abaqus 6.7". I have meshed the parts, i.e the incident bar which hits the specimen, the specimen and the transmitter bar using HEX elemnts and I have around 100,000 elements in the simulation. I have applied proper boundary conditions and material properties and step conditions.. But I end up with a warning and the simulation doesnt run as it has to.. the warning  i get is..