*SetCoilSpring() - symmetric coil spring pair

Sets the properties of a symmetric coil spring pair.

Syntax

*SetCoilSpring(spr_name,LEFT|RIGHT,TYPE_k,TOKEN_k, 
                                            TYPE_c,TOKEN_c, 
                                            f,l)

Arguments

spr_name: The variable name of an existing coil spring pair.; Data type: varname
LEFT RIGHT: If LEFT is specified, the properties are assigned to the left spring, and the right spring properties are made symmetric to the left spring.; If RIGHT is specified, the properties are assigned to the right spring, and the left spring properties are made symmetric to the right spring.
k: The stiffness coefficient of the coil spring.; Data type: real
c: The damping coefficient of the coil spring.; Data type: real
f: The load on the coil spring when it has a particular length.; Data type: real
l: The length of the coil spring when it has a particular load.; Data type: real
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 coil spring.

Example

*Body(b_lca, 
"LCA", 
p_lca_cm)
*Body(b_frame, 
"Frame", 
p_frame_cm)
*Point(p_spr_upr, 
"Spring @ frame")
*Point(p_spr_lwr, 
"Spring @ lca")
*CoilSpring(spring_uca, 
"Coil Spring", 
b_lca, 
b_frame, 
p_spr_upr, 
p_spr_lwr)
*SetCoilSpring(spring_uca, LEFT, 
1.000e+02, 0.000e+00, 
0.000e+00, 3.500e+02)

Context

*BeginMdl()

*DefineAnalysis()

*DefineSystem()

Comments

Nonlinear properties for stiffness or damping cannot be specified for a symmetric pair.

To specify non-linear properties for the coil spring in any direction, a solver expression, 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.