[flo90000]

Hello

In my simulation I use two UDFs in 6DOF. After the initialization, even if it doesn't reach the convergence tolerance of 1e-6, it writes me this error "Error at host : 6DOF object must have positive mass". But in my UDF, I ask to return some values and I have "3d : Update 6DOF properties DT_THETA_Y:0.000000e+00, My:-0.000000e+00, Mass:1.624241e-03"
there are my codes:

#include "udf.h"
#include "math.h"

DEFINE_SDOF_PROPERTIES(valve2, prop, dt, time, dtime)
{
#if !RP_HOST
  prop[SDOF_MASS] = 0.001624241;
  prop[SDOF_IYY] = 0.000010947;
  prop[SDOF_ZERO_TRANS_X] = TRUE;
  prop[SDOF_ZERO_TRANS_Y] = TRUE;
  prop[SDOF_ZERO_TRANS_Z] = TRUE;
  prop[SDOF_ZERO_ROT_X] = TRUE;
  prop[SDOF_ZERO_ROT_Y] = FALSE;
  prop[SDOF_ZERO_ROT_Z] = TRUE;
  prop[SDOF_LOAD_M_Y] = 9.81*0.045*sin(DT_THETA (dt)[1])*0.045;
printf("\n 3d_2 : Update 6DOF properties DT_THETA_Y:%e, My:%e, Mass:%e\n", DT_THETA (dt)[1],prop[SDOF_LOAD_M_Y], prop[SDOF_MASS]);
#endif
}

include "udf.h"
#include "math.h"

DEFINE_SDOF_PROPERTIES(valve1, prop, dt, time, dtime)
{
#if !RP_HOST
  prop[SDOF_MASS] = 0.001624241;
  prop[SDOF_IYY] = 0.000010947;
  prop[SDOF_ZERO_TRANS_X] = TRUE;
  prop[SDOF_ZERO_TRANS_Y] = TRUE;
  prop[SDOF_ZERO_TRANS_Z] = TRUE;
  prop[SDOF_ZERO_ROT_X] = TRUE;
  prop[SDOF_ZERO_ROT_Y] = FALSE;
  prop[SDOF_ZERO_ROT_Z] = TRUE;
  prop[SDOF_LOAD_M_Y] = -9.81*0.045*sin(DT_THETA (dt)[1])*0.045;
printf("\n 3d_1 : Update 6DOF properties DT_THETA_Y:%e, My:%e, Mass:%e\n", DT_THETA (dt)[1],prop[SDOF_LOAD_M_Y], prop[SDOF_MASS]);
#endif
}

Is it due to my UDF? or how can I resolve it?
Thank you for your help

[Ingenieur]

I have the same problem ..
I think the parallelizing is not correct because it works normaly with serial run