*SetCoilSpring() - single coil spring
Sets the properties of a coil spring.
Syntax
*SetCoilSpring(spr_name, TYPE_k, TOKEN_k,
TYPE_c, TOKEN_c,
f, l)
Arguments
- spr_name
- The variable name of an existing coil spring.
- k
- The stiffness coefficient of the coil spring.
- c
- The damping coefficient of the coil spring.
- f
- The load on the coil spring when it has a particular length.
- l
- The length of the coil spring when it has a particular load.
- 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,
1.000e+02,
0.000e+00,
0.000e+00,
3.500e+02)
*CoilSpring( cspr, "Coil spring", b_frame,
b_lca,
p_spr_upr,
p_spr_lwr )
*Curve( crv_spr, "Spring rate")
*SetCoilSpring(cspr, crv_spr.interp(CUBIC,
`{cspr.DM} -235` ),
0,
0,
235)
*CoilSpring( dmp, "Damper", b_shk_upr,
b_shk_lwr,
p_shk_upr,
p_shk_lwr )
*Curve( crv_dmp, "Damping rate")
*SetCoilSpring(dmp, 0, `POLY({ dmp.VR }, 0, 0, 10, 0, 3)`,
0,
235)
Context
Comments
To specify non-linear properties for the torque 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.