4569846498

Modelling and assembly of the full vehicle 381
30 m 25 m 25 m 30 m 15 m
A
C
B
A – 1.3 times vehicle width 0.25 m
B – 1.2 times vehicle width 0.25 m
C – 1.1 times vehicle width 0.25 m
Fig. 6.49 Lane change test procedure. (This material has been reproduced
from the Proceedings of the Institution of Mechanical Engineers, K2 Vol. 214
‘The modelling and simulation of vehicle handling. Part 4: handling simulation’,
M.V. Blundell, page 74, by permission of the Council of the Institution of
Mechanical Engineers)
120.0
STEERING INPUT – 100 km/h LANE CHANGE
Steering wheel angle (deg)
80.0
40.0
0.0
40.0
80.0
120.0
0.0
1.0
2.0
3.0
4.0
Time (s)
Fig. 6.50 Steering input for the lane change manoeuvre
5.0
vehicle dynamics task, however, the automotive engineer will want to carry
out simulations before the design has progressed to such an advanced state.
In this case study the level of vehicle modelling detail required to simulate
a ‘full vehicle’ handling manoeuvre will be explored. The types of manoeuvres
performed on the proving ground are discussed in the next chapter but
as a start we will consider a 100 km/h double lane change manoeuvre. The
test procedure for the double lane change manoeuvre is shown schematically
in Figure 6.49.
For the simulations performed in the case study the measured steering wheel
inputs from a test vehicle have been extracted and applied as a time dependent
handwheel rotation (Figure 6.50) as described in section 6.12.3.