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After running an MBD for ANSYS simulation, several result files are generated..

(The result files are generated in ResultFolder\ResultFolder_files\user_files\SYS  - ResultFolder is an example name of the folder where the wbpj.pic file is located.)


Multi-Body-Dynamics-for-ANSYS-ResultFiles


The following files are saved:

  • *.msg (Message): A text file that contains the analysis data from the solver. This file has simulation information such as calculation time or DOFs.
  • *.rad: An animation file
  • *.ran: The animation frame results collected during the analysis for RecurDyn Viewer
  • *.rmd: A text file that contains all of the data about the model that the solver used in the simulation (like parameters of bodies, joints, forces and others)
  • *.rplt: The analysis results used to draw a plot of the analysis. This file can be imported directly to the plot document of RecurDyn Viewer.
  • *.rbx: Data about the objects in the MBD for ANSYS model, such as the bodies, joints, forces, and contacts. Model information file for RecurDyn Viewer.
  • *.sdk: Model data that can be imported into RecurDyn or RecurDyn Viewer (Caution: When you import an *.sdk file into RecurDyn or RecurDyn Viewer, the *.rbx and *.x_b files must also be in the same folder as the *.sdk file.)
  • *.x_b: Geometry data for the analysis model
  • Contact output file (*.con): A text file that contains the contact information related to the geo contact objects recorded by the solver. For the text format, please refer to the following:
    • Time: Simulation time
    • NCP: Total number of calculated contact points
    • NO: Current contact point number
    • X_RefPos: X position of the Output Reference Marker from Global
    • Y_RefPos: Y position of the Output Reference Marker from Global
    • Z_RefPos: Z position of the Output Reference Marker from Global
    • Z_EulerA: Euler angle X of the Output Reference Marker from Global
    • X_EulerA: Euler angle Y of the Output Reference Marker from Global
    • Z_EulerA: Euler angle Z of the Output Reference Marker from Global
    • X_ConPos: X position of the Calculated Contact Reference Frame from Global
    • Y_ConPos: Y position of the Calculated Contact Reference Frame from Global
    • Z_ConPos: Z position of the Calculated Contact Reference Frame from Global
    • X_NorDir: Normal Direction X of the Calculated Contact Reference Frame from Global
    • Y_NorDir: Normal Direction Y of the Calculated Contact Reference Frame from Global
    • Z_NorDir: Normal Direction Z of the Calculated Contact Reference Frame from Global
    • X_TanDir: Tangent(Friction) Direction X of the Calculated Contact Reference Frame from Global
    • Y_TanDir: Tangent(Friction) Direction Y of the Calculated Contact Reference Frame from Global
    • Z_TanDir: Tangent(Friction) Direction Z of the Calculated Contact Reference Frame from Global
    • Pen: Penetration depth
    • PenVel: Penetration depth velocity or relative velocity in the normal direction
    • TanVel: Relative velocity in tangent direction
    • FricCoeff: Coefficient of friction
    • NorForce: Magnitude of normal force
    • FricForce: Magnitude of friction force


MBDResult.sdk is especially important. This text file includes other result file names such asMBDResult.rbx, MBDResult.x_b, MBDResult.ran and MBDResult.rplt.

If you change the name of the result files to import *.sdk files into RecurDyn Viewer, you need to change the names of the other files accordingly.