Select Force Models in the Bushing Property File
The .gbs file is an ASCII file that adheres to the TeimOrbit format. The .gbs file contains data in the form of blocks. Each block has a title that identifies what the block is, followed by the data.
- Header block
- Units block
- Global block
- Directions block
- Friction block
[HEADER]
[UNITS]
[GLOBAL]
[DIRECTIONS]
[FRICTION]
[SPLINE_STIFFNESS_FX] [SPLINE_STIFFNESS_FY] [SPLINE_STIFFNESS_FZ]
[CONSTANT_STIFFNESS_FX] [CONSTANT_STIFFNESS_FY] [CONSTANT_STIFFNESS_FZ]
[CUBIC_SIFFNESS_FX] [CUBIC_STIFFNESS_FY] [CUBIC_STIFFNESS_FZ]
[CONSTANT_DAMPING_FX] [CONSTANT_DAMPING_FY] [CONSTANT_DAMPING_FZ]
[RUBBER_DAMPING_FX] [RUBBER_DAMPING_FY] [RUBER_DAMPING_FZ]
[HYDROMOUNT_DAMPING_FX] [HYDROMOUNT_DAMPING_FY] [HYDROMOUNT_DAMPING_FZ]
[SPLINE_STIFFNESS_TX] [SPLINE_STIFFNESS_TY] [SPLINE_STIFFNESS_TZ]
[CONSTANT_STIFFNESS_TX] [CONSTANT_STIFFNESS_TY] [CONSTANT_STIFFNESS_TZ]
[CUBIC_STIFFNESS_TX] [CUBIC_STIFFNESS_TY] [CUBIC_STIFFNESS_TZ]
[CONSTANT_DAMPING_TX] [CONSTANT_DAMPING_TY] [CONSTANT_DAMPING_TZ]
[RUBBER_DAMPING_TX] [RUBBER_DAMPING_TY] [RUBBER_DAMPING_TZ]
[HYDROMOUNT_DAMPING_TX] [HYDROMOUNT_DAMPING_TY] [HYDROMOUNT_DAMPING_TZ]
(ACTIVITY)
sub-block in the [DIRECTIONS]
block
in the property file defines the force models that are active. The directions block
is a 6x6 matrix.- Each column represents a force direction and each row represents one of the 6 force models.
- A one (1) in entry [I,J] indicates that for force model [I] is active for force direction [J].
- A zero (0) in entry [I,J] indicates that for force model [I] is inactive for force direction [J].
- For FX: SPLINE_STIFFNESS and RUBBER DAMPING are active
- For FY: CONSTANT_STIFFNESS and HYDROMOUNT DAMPING are active
- For TX: CUBIC_STIFFNESS and CONSTANT_DAMPING are active
- For TZ: CUBIC_STIFFNESS and RUBBER DAMPING are active
$---------------------------------------------------------- DIRECTIONS
[DIRECTIONS]
(ACTIVITY)
{ formulation FX FY FZ TX TY TZ }
'SPLINE_STIFFNESS' 1 0 0 0 0 0
'CONSTANT_STIFFNESS' 0 1 0 0 0 0
'CUBIC_STIFFNESS' 0 0 1 1 1 1
'CONSTANT_DAMPING' 0 0 1 1 1 0
'RUBBER_DAMPING' 1 0 0 0 0 1
'HYDROMOUNT_DAMPING' 0 1 0 0 0 0
Therefore the net force output for any direction is the sum of the forces due to the active force formulations in that direction.