With the addition of the Veh#3/Trailer Option, an additional option to permit snagging Veh#2 & Veh#3/Trailer has been added. The option is specified on m-smac input card 16, sequence 1. To insert input card16, sequence 1, simply indicate 1 in the Sequence Number field of the Insert Command of medit.
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TSBEG |
TSWIND |
FSOPO |
XSPI |
YSPI |
AKSP |
DELSPM |
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AKSP2 |
1 |
16 |
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Card: Field |
Variable |
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Description |
Original Units |
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"SNAG" Impulsive Restraint Optional Input for snags between vehcicle#2 and optional veh#3/Trailer. For SNAG, you specify a point in V2 (FSOPO=1,2) and at the start time for the snag (TSBEG) the location of the point specified is determined either in the other vehicle (FSOPO=2) or in space (FSOPO=1). Then an impulsive constraint is applied to the vehicle(s), based on the stiffness AKST, to attempt to minimize the separation of the points during the pulse width (TSWIND).
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16:1 |
TSBEG |
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Time to begin reaction and to begin use of DTCOLL. |
Sec |
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16:2 |
TSWIND |
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Pulse width, or duration of reaction. |
Sec |
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16:3 |
FSOPO |
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Option = 0 - no reaction. 1 - Point specified in V2, reaction point fixed in space. 2 - Point specified in V2, reaction point fixed in V2. |
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16:4 |
XSPI |
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X coordinate of force application point in V2 |
inches |
mm | ||||||||||||
16:5 |
YSPI |
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Y coordinate of force application point in V2 |
inches |
mm | ||||||||||||
16:6 |
AKSP |
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Linear load-deflection characteristic of impulsive force. |
lb/inch |
N/cm | ||||||||||||
16:7 |
DELSPM |
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Deflection at which saturation of impulsive force occurs. NOTE: Maximum value of Impulse = AKSP*DELPSM*TSWIND |
inches
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Mm | ||||||||||||
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16:9 |
AKSP2 |
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Normally with DELSPM the force saturates at AKSP*DELPSM. Setting AKSP2 > 0 applies a secondary resistance for deflections > DELSPM. |
Lb/inch
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N/cm |
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