PHASE4 Equivalent 5th wheel properties

General questions on the SMAC, msmac3D and other Collision Simulation programs
MSI
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PHASE4 Equivalent 5th wheel properties

Post by MSI »

Back in 1986 when we wrote smac-87 and included a comparison of smac2D to PHASE4 we also ran a simulation using a snag between a tractor and trailer to mimic how Phase4 simulates a 5th wheel connection.
PHASE4 uses a critically damped spring to make 5th wheel connections. Here are some 1986 notes on calculations to mimic the PHASE4 inputs for msmac snag option:
From page 6 of our reference smac-87
Phase4 Notes.png
Phase4 Notes.png (153.01 KiB) Viewed 973 times
Phase4 Notes2.png
Phase4 Notes2.png (103.54 KiB) Viewed 973 times