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Recommended names for masses and couplings   

The user can use any names he or she wants to when creating the masses and couplings, but it is recommended to follow a convention in order to more easily read input data files written by other people.

Numbering system
As can be seen in the above:
One digit refers to the number of the vehicle.
Two digits refers to the number of the bogie or bolster beam. The first bogie in the first vehicle is denoted 11, the second bogie in the first vehicle is denoted 12, the first bogie in the second vehicle is denoted 21,,, etc.
Three digits refers to the number of the wheelset, track piece or ground. The first axle in the first bogie in the first vehicle is denoted 111, the second axle in the first bogie in the first vehicle is denoted 112, the first axle in the second bogie in the first vehicle is denoted 121,,, etc.

Recommended names of the couplings:
The name should mainly be build up by the following parts:

1. Type of coupling:

   k	=  Stiffness
   c	=  Viscous damper
   kc	=  Viscous damper with serial flexibility
   kf	=  Friction damper with serial flexibility

2. Direction of action:

   x	=  Longitudinal
   y	=  Lateral
   z	=  Vertical
   f	=  Roll
   k	=  Pitch
   p	=  Yaw
   c	=  Direction of coupling
   m	=  Matrix direction

3. Body connected to the first end of the coupling:

   c	=  Car-body
   b	=  Bogie
   l	=  Bolster beam
   a	=  Axle (wheelset)
   w	=  Wheel
   r	=  Rail
   t	=  Track
   g	=  Ground

4. Body connected to the second end of the coupling:

   c	=  Car-body
   b	=  Bogie
   l	=  Bolster beam
   a	=  Axle (wheelset)
   w	=  Wheel
   r	=  Rail
   t	=  Track
   g	=  Ground

5. The number of the coupling.
   If the coupling exists on both right and left side of the vehicle, the letters "r" or "l" could be added to the coupling-number.
   If the coupling exists both forward and backward in the bogie, the letters "f" or "b" could be added to the coupling-number.