It is possible to use any rigid body dynamics commands you would use during a simulation from the IronPython console, outside of the simulation environment. The following command snippets and instructions provide a demonstration of this capability:

You can access the IronPython console by clicking the File > Scripting > Open Command Window menu item.

The following code snippets load the RBD Command module into IronPython:

import clr
import os
import Ansys
import sys

clr.AddReference('Ans.Utilities')
ver=Ansys.Utilities.ApplicationConfiguration.DefaultConfiguration.VersionInfo.VersionString

awp_root=os.getenv('AWP_ROOT'+ver)
sys.path.Add(awp_root+r'\aisol\bin\winx64')
clr.AddReference('Ans.MotionSolver.MSolverLib.CSMotion')

from Ans.MotionSolver.MSolverLib.CSMotion import *

You can read an already-solved rigid body dynamics model using the following code:

dbIn=CS_MSolverDB()
dbIn.SetFileName(GetProjectDirectory()+'/TestRestart_files/dp0/SYS/MECH/file.mbd')
dbIn.OpenDataBase(0)
dbIn.ReadDB()
dbIn.Dispose()

The environment and system objects are accessed in the following way:

environment=CS_Environment.GetDefault()
system=environment.System

It is now possible to alter properties of the simulation. For example, you could modify the end time and restart from 0.5 s:

environment.AlterSimulationEndTime(2.0)
environment.RestartTime=0.5
environment.Solve()

Once you have made your changes, make use the following code snippet to save the modified database:

dbOut=CS_MSolverDB()
dbOut.SetFileName(GetProjectDirectory()+'/TestRestart_files/dp0/SYS/MECH/file.mbd')
dbOut.OpenDataBase(1)
dbOut.WriteDB()
dbOut.Dispose()