Hi,
try to use third part api at https://pypi.org/project/dynareadout/
or try with the exampes described in the following link
https://dpf.docs.pyansys.com/version/stable/examples/01-transient_analyses/02-lsdyna_operators.html#sphx-glr-examples-01-transient-analyses-02-lsdyna-operators-py
cheers, ram