## Card 22 - Articulated Vehicle Option: Veh1

 Gam1.1 Gam2.1 NF.1 NS.1 TTimuRR1 TTimuLR1 XF3 XR3 YS3 22

 Card:  Field Variable Description Original Units Metric Units Vehicle 1 Articulated Vehicle/Trailer Option Inputs: (Card 2 of 2 required) Tractor-trailer option articulation angle limit stops definitions These inputs are used to define the articulation stop properties of the tractor-trailer system.  For the m-smac articulation option,  an articulation  limit is simulated by means of a linearly increasing resistance to articulation which occurs between the angles gam1.1 and gam2.1. The resistance is defined by the friction moment (NF.1) and the angular stop moment (NS.1) 22:1 Gam1.1 Beginning angle for increased resistance of V1 trailer articulation deg 22:2 Gam2.1 Maximum articulation angle for V1 trailer. Deg 22:3 NF.1 V1 trailer friction moment. lb-in N-cm 22:4 NS.1 V1 trailer angular stop moment. lb-in N-cm The following Optional Tirmu inputs are permits the simulation of individual tires which have drag factors different than the nominal MU (i.e., metal gouging, etc.). If entered as 0.0, program assumes default value of 1.0 (normal). An input value of 0.86 would produce an effective friction of 0.60 for a tire on a nominal friction coefficient of 0.70 22:5 TTirmuRR1 V1 trailer RR trailer tire Tirmu friction multiplier factor 22:6 TTirmuLR1 V1 trailer LR trailer tire Tirmu friction multiplier factor 22:7 XF3 Distance from the CG of the trailer of Vehicle 1 to the front of the trailer in mm 22:8 XR3 Distance from the CG of the trailer of Vehicle 1 to the rear end of the trailer in mm 22:9 YS3 Overall width of the trailer of Vehicle 1 (may also be entered as trailer ½ width. Value compared with the track width, if less than the track width, assumed to be ½ width) in mm

Card 20 – Articulated Vehicle Option: Veh1

Card 98 – Veh#3/Trailer Collision information

Card 21 – Articulated Vehicle Option: Veh2

Card 23 - Articulated Vehicle Option: Veh2, additional inputs

Figure 14  5th Wheel Friction

Figure 15  5th Wheel Articulation Stops

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Card 21 - Articulated Vehicle Option: Veh2