*SetMotion() - asymmetric motion pair

Sets the properties of an asymmetric motion pair.

Syntax

*SetMotion(motion_name, , DISP|VEL|ACCL, 
                                    TYPE_left, 
                                    TOKEN_left, 
                                    TYPE_right, 
                                    TOKEN_right)

Arguments

motion_name: The variable name of an existing motion pair.; Data type: varname
DISP VEL ACCL: This argument identifies whether a displacement, velocity, or acceleration is being specified.
curve_name, AKIMA|CUBIC|LINEAR|QUINTIC, `indep_variable`: When using curve data, a curve, an interpolation method, and an independent variable must be specified, where curve_name is the variable name of an existing curve that represents the force characteristic, the interpolation method can be set to AKIMA, CUBIC, LINEAR, or QUINTIC. The indep_variable is the solver expression representing the independent variable along which the force curve is characterized.
spl3d name, AKIMA|CUBIC|LINEAR| QUINTIC, 'indep_var1', 'indep_var2': When using spline3d, a Spline3D entity, an interpolation method, and two independent variables must be specified, where spl3d_name is the variable name of an existing Spline3D entity that would represent the force v/s two independent variables. The interpolation method can be set to AKIMA, CUBIC, LINEAR, or QUINTIC. indep_var1 is the solver expression for the first independent variable. indep_var2 is the solver expression that represents the second independent variable.
`expression`: A solver expression for the motion.

Example

*RevJointPair(j_crank_pivot, "Crank pivot", 
 b_crank, 
 B_Ground, 
 p_crank_pivot, 
 p_crank_pivot_axis)
*MotionPair(crank_rot, "Crank rotation", j_crank_pivot)
*SetMotion(mtn1, RIGHT, VEL, ds.real1.value +
 ds.real2.value, 30)
*SetMotion(crank_rot, , DISP, 
 `30xsin(2*P1*TIME)`, 
 `30xcos(2*P1*TIME)`)
*MotionPair( mtn_wc, "Wheel center motion", j_wc_trans)
*Curve( crv_wc_mtn, "Wheel center mtn")
*SetMotion(mtn_wc, , DISP, crv_wc_mtn.interp(AKIMA, `TIME`), 
 crv_wc_mtn.interp(AKIMA, `TIME`))
*SetMotion(mtn_wc, , DISP, `USER({ crv_wc_mtn.id, %d })`, 
 `USER({ crv_wc_mtn.id, %d })`)

Context

*BeginMdl()

*DefineAnalysis()

*DefineSystem()

Comments

The second argument (used to specify symmetry) is left empty when specifying asymmetric properties for a motion pair.

Nonlinear properties can be specified only for asymmetric coil spring pairs.

To specify non-linear properties for the motion in any direction, a solver expression or curve data, or spline 3D data can be used. When using solver expressions, Templex syntax is used and all variables are enclosed in braces {} and the rest is treated as literal.

The QUINTIC interpolation method is supported for MotionSolve only.