A generalized digital simulation has been programmed in the basic FORTRAN language for calculating the motions and forces during operation of a multi-membered railcar. The railcar is driven at selected speeds along a pair of rails represented by recorded numerical measurements. All massive components of the railcar are treated as general mechanical members with six degrees of freedom, coupled to each other by an arbitrary set of linear elements or a programmed set of nonlinear functions having given spring rates, damping constants, etc. The model includes simulation of truck hunting phenomena with cylindrical or taped wheel treads and simulation of the compliance properties of the rail roadbed. (FRA abstract)
Dynamic Railcar Simulation Program
1970
293 pages
Report
No indication
English
Transportation Safety , Railroad cars , Dynamics , Equations of motion , Force(Mechanics) , Torque , Linear systems , Nonlinear programming , Simulation , Digital computers , Mathematical models , Railroad tracks , Velocity , Drag , Statistical analysis , Punched cards , Subroutines , Degrees of freedom , Computer graphics , Wheel rail interactions