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T.P.D.M.V.2.2
(Al/2001)
DIAGRAM 2.2.3.10
PREDICTION OF ARTICULATED VEHICLE SWEPT PATH
-SCHNEIDER METHOD
.0 , 0:
1.1 1 U
00
Iy I. la
L2
12 U
1. DRAW APPROPRIATE RADIUS, 10m, 15m etc.
2. DRAW OUTLINE OF TRACTOR AND TRAILER UNITS.
THE TRACTOR UNIT SHOULD BE PLOTTED AS FOR THE
RIGID VEHICLE EXAMPLE. HOWEVER, WHEN
PLOTTING THE NEXT POSITION OF THE TRACTOR
THE ARC RADIUS Yi Y 2 MAY BE TAKEN AS
BEING GREATER THAN THE WHEEL BASE.
APPROXIMATELY 1-5 x WHEEL BASE HAS BEEN
FOUND TO BE CONVENIENT LENGTH.
3. DRAW RADIUS R* THROUGH PIVOT POINT Zi
CONCENTRIC TO OUTSIDE RADIUS,
4. PLOT NEXT POSITION OF TRACTOR UNIT AND
22 NEXT POSITION OF PIVOT POINT , ALONG R2 .
WHERE U a DISTANCE OF PIVOT FROM REAR
OF TRACTOR.
5. FIND P MID POINT OF ARC Zi Z: .
6. DRAW LINE FROM Wt TO P . WHERE Wi Qi = t *
7. DRAW ARC OF RADIUS 16 * I FROM 22
5. WHERE ARC INTERSECTS Wi P IS NEXT POSITION
W2 OF CENTRE OF REAR AXLE .
9. JOIN W2 22 [ i OF TRAILER ) AND CONSTRUCT
Lz M 2 N 2 02 .
WHERE L2M 2 * WIDTH OF TRAILER
AND M2 N* » 15 * U * 17 + U .
10. REPEAT UNTIL COMPLETE TURN PLOTTED.