This subroutine generates a user - defined soil force.
|
Language type |
SubRoutine |
|
FORTRAN |
track_soil_force (TIME, INFO, UPAR, NPAR, DIRD, DIRV, DISP, LGORI, NGPOS, NGORI, NGVEL, LENGTH, WIDTH, IFLAG, RESULT) |
|
C/C++ |
track_soil_force (double time, int info[], double upar[], int npar, double dird[], double dirv[], double disp[], double lgori[], double ngpos[], double ngori[], double ngvel[], double length, double width, int iflag, double result[3]) |
Parameter information
|
Variable Name |
Size |
Description |
|
time |
double |
Current simulation time of RecurDyn/Solver. |
|
info |
int[3] |
ID of body & node. |
|
upar |
double[30] |
Parameters defined by the user. The maximum size of array is 30. |
|
npar |
int |
Number of user parameters. |
|
dird |
double[3] |
Direction vector of a ground patch. |
|
dirv |
double[3] |
Returned force vector and six-dimensional array. |
|
lgori |
double[9] |
Global orientation of a track link. |
|
ngpos |
double[3] |
Global position of a contact node. |
|
ngvel |
double[3] |
Global velocity of a contact node |
|
length |
double |
Length of meshed rectangle at a track link. |
|
width |
double |
Width of meshed rectangle at a track link. |
|
iflag |
int |
When RecurDyn/Solver makes its initial call to this routine, the flag is true. Otherwise, the flag is false. |
|
result |
double[3] |
Returned force vector. |
Example
Figure 1 Track vehicle model using track soil user subroutine
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/**).