General Bushing System Files
The Model Identification Tool (MotionView) is a utility in HyperGraph that you use to fit experimental data to various bushing models. The MotionView generates a General Bushing System file, .gbs file, which defines the bushing properties.
Component | Method | Description |
---|---|---|
Stiffness | Constant Stiffness | F=-K*x ; used when the bushing’s stiffness
behavior is linear. The value x is the
deformation in the direction of interest. |
Spline Stiffness | F=-g(x) ; where g(x) is a
cubic spline interpolation of static force vs. displacement data
in the .gbs file. Linear extrapolation is
used when the data is outside the range of specified
data. |
|
Cubic Stiffness | F=-h(x) ; where h(x) is
defined by a pair of cubic polynomials whose coefficients are
derived from the measured force vs. displacement data in the
.gbs file. |
|
Damping | Constant Damping | F=-c*v ; used when the bushing’s damping
behavior is linear. The value v is the
deformation velocity in the direction of interest. |
Rubber Damping | An amplitude and frequency-dependent bushing model, whose coefficients are fit to measured data using a tool such as the MotionView. | |
Hydromount Damping | An amplitude and frequency dependent model for hydrodynamic mounts, whose coefficients are fit to measured data using a tool such as the MotionView. |