This subroutine generates a user- defined screw force.
|
Language type |
SubRoutine |
|
FORTRAN |
screw_force (TIME, UPAR, NPAR, JFLAG, IFLAG, RESULT) |
|
C/C++ |
screw_force (double time, double upar[], int npar, int jflag, int iflag, double result[6]) |
Parameter information
|
Variable Name |
Size |
Description |
|
time |
double |
Current simulation time of RecurDyn/Solver. |
|
upar |
double[100] |
Parameters defined by the user. The maximum size of array is 100. |
|
npar |
int |
Number of user parameters. |
|
jflag |
int |
When RecurDyn/Solver evaluates the Jacobian, the flag is true. Otherwise, the flag is false. |
|
iflag |
int |
When RecurDyn/Solver makes its initial call to this routine, the flag is true. Otherwise, the flag is false. |
|
result |
double[6] |
Returned force vector and six-dimensional array. |
Example
This subroutine returns forces to a wheel for standing on the ground, as shown in Figure 1.
Figure 1 Wheels and Screw forces
Note
If the user wants to run this model using a user subroutine, the user can refer it in the directory (<install dir>/Help/usub/**).