Subroutine Type

Modeling

Definition

Used to compute the force value for a force entity.

Use

User defined request calling a SFOSUB for the calculation of the force magnitude:

<Force_Scalar_TwoBody

    id                  = "30101"

    type                = "Force"

    i_marker_id         = "30103031"

    body1_id            = "30103"

    j_marker_id         = "30104041"

    body2_id            = "30104"

    usrsub_param_string = "USER(50,1000)"

    usrsub_dll_name     = "NULL">

 </Force_Scalar_TwoBody>

Calling Syntax

Fortran

SUBROUTINE SFOSUB (ID, TIME, PAR, NPAR, DFLAG,IFLAG, VALUE)

C

void STDCALL SFOSUB (int *id, double *time, double *par, int *npar, int *dflag, int *iflag, double *result)

Python

def SFOSUB(id, time, par, npar, dflag, iflag):

    return value

MATLAB

function result = SFOSUB(id, time, par, npar, dflag, iflag)

Input Arguments

[integer] ID

The user-defined force element identifier.

[double precision] TIME

The current simulation time.

[double precision] PAR

An array that contains the constant arguments from the list provided in the user-defined statement.

[integer] NPAR

The number of entries in the PAR array.

[logical] DFLAG

The differencing flag.

[logical] IFLAG

The initialization flag.

Output Values

[double precision] VALUE

The output value that contains the force value that the SFOSUB has computed.

Example

def SFOSUB(id, time, par, npar, dflag, iflag):

    [dm, errflg] = py_sysfnc("DM", [par[0],par[1]])

    [vm, errflg] = py_sysfnc("VM", [par[2],par[3]])

    [vector, errflg] = py_impact(dm, vm, par[4], par[5], par[6], par[7], par[8], 0)

    return vector[0]