Variable Name
Size
Description
ifbody
int
Sequential id of FFlex body defined in RecurDyn/Solver. This is a related argument with the 5th argument of Nodal_Force_Ext subroutine.
NodeSeq
int
Node sequential id defined in RecurDyn/Solver. This is a related argument with the 6th argument of Nodal_Force_Ext subroutine.
MKID
int [2]
An array of integer type. Each value should be zero or a marker id. 1st value is defined as base marker. 2nd value is defined as reference marker.
nMK
double*
An integer variable for considering base and reference marker. If nMK is 0, then the subroutine returns global acceleration vectors of NodeSeq. If nMK is 1, then the subroutine calculates acceleration vectors considering base marker. If nMK is 2, then the subroutine calculates acceleration vectors considering base and reference marker.
Acc
double [6]
An array of double precision type. The array size must be 6. First 3 values mean a relative acceleration vector.
Where, is a orientation matrix of the
reference marker (=MKID[1] ). 
is a global position
vector of NodeSeq. 
is a global
position vector of the base marker (=MKID[0]). The last 3 values mean a
relative angular acceleration vector.
Where, 
is a global
angular velocity vector of NodeSeq. 
is a angular velocity
vector of the base marker (=MKID[0]).
Errflg
int
Error flag.
If the result of this argument is -1 (means TRUE in Fortran logical value), there is no error.
The others mean that there is an error.