_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.
Marker Displacement	E0, E1, E2, E3	Orientation in Euler parameters.
Marker Velocity	VM, VX, VY, VZ	Magnitude and X, Y, Z components of velocity.
Marker 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.
Marker 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.
Marker Force	TM, TX, TY, TZ	Magnitude and X, Y, Z components of torque.
Expressions	F1, F2,..., F8	Vectors containing evaluated expressions.