You can convert volumetric mesh from VTK format to Abaqus .inp file using the free meshio Python package.
I am not sure if material ID is included in the output file, but if you find that it is not, then you can submit a feature request to meshio.
You can convert volumetric mesh from VTK format to Abaqus .inp file using the free meshio Python package.
I am not sure if material ID is included in the output file, but if you find that it is not, then you can submit a feature request to meshio.