Front View Instant Center
The point in the front elevation around which the wheel center rotates as it moves vertically. The instant center has two components, lateral and vertical. The lateral measurement is positive inboard of the wheel center. The vertical measurement is positive above the wheel center.
Computed by:
SVCICR
Input Variables Used:
Compliance matrix
Method:
SVC computes the instant center from the DY, DZ, and DTHETA of the wheel center due to opposite vertical forces on both sides:
left side | right side | |
DY = | C( 2,3 ) - C( 2,9 ) = | C( 8,9 ) - C( 8,3 ) |
DZ = | C( 3,3 ) - C( 3,9 ) = | C( 9,9 ) - C( 9,3 |
DTHETA = | C( 4,3 ) - C( 4,9 ) = | C( 10,9 ) - C( 10,3 ) |
The radius of the circle described is:
R = SQRT( DY2 + DZ2 ) / DTHETA
The angle of the line connecting the wheel center to the instant center is:
ANG = arctan( -DY / DZ )
The instant center position is then:
Left lateral = - R cos( ANG )
Right lateral = R cos( ANG )
Vertical = - R sin( ANG )
Instant Center Front View (Lateral, Vertical)
