_mbd.mrf file

The _mbd.mrf file is a Multibody Results File.

File Creation

This file is created when a multibody dynamics subcase is defined. The file contains time history data that can be used for 2D plotting in HyperGraph. Some data is written by default, and some needs to be requested.

File Contents

Data output by default.
Type Component Description
Rigid Body X, Y, Z Position
E0, E1, E2, E3 Orientation in Euler parameters.
VM, VX, VY, VZ Magnitude and X, Y, Z components of velocity.
WM, WX, WY, WZ Magnitude and X, Y, Z components of angular velocity.
ACCM, ACCX, ACCY, ACCZ Magnitude and X, Y, X components of acceleration.
WDTM, WDTX, WDTY, WDTZ Magnitude and X, Y, Z components of angular acceleration.
KE Kinetic energy
Flex Body All Rigid Body results  
Q/i, i = 1,2,...,n Modal participation factors.
XD/i, i=1,2,...,N Modal velocity
System KE Kinetic energy
CPU Usage Total CPU time used.
CPU/Sim. Time Ratio The ration between the total CPU time used and the simulation time.
Stepsize Actual step size used in the integration.
Integration Order Order of the integrator used in the integration.
Data output by request. The request needs to be defined through a REQUEST I/O statement.
Type Component Description
Marker Displacement DM, DX, DY, DZ Magnitude and X, Y, Z components of displacement.
E0, E1, E2, E3 Orientation in Euler parameters.
Marker Velocity VM, VX, VY, VZ Magnitude and X, Y, Z components of velocity.
WM, WX, WY, WZ Magnitude and X, Y, Z components of angular velocity.
Marker Acceleration ACCM, ACCX, ACCY, ACCZ Magnitude and X, Y, Z components of acceleration.
WDTM, WDTX, WDTY, WDTZ Magnitude and X, Y, Z components of angular acceleration.
Marker Force FM, FX, FY, FZ Magnitude and X, Y, Z components of force.
TM, TX, TY, TZ Magnitude and X, Y, Z components of torque.
Expressions F1, F2,..., F8 Vectors containing evaluated expressions.