rolland.track.SimplePeriodicSlabSingleRailTrack¶

class rolland.track.SimplePeriodicSlabSingleRailTrack(*, rail, slab=Slab(ms=1e20), pad, mount_prop={}, distance=0.6, num_mount=100)[source]¶

Bases: DiscrSlabSingleRailTrack

Single rail slab track with simple periodic support.

All mounting properties are uniform and no variation is allowed. Slab is assumed to be rigid.

Layer	Component	Condition	Variability
/	rail	continuous	no
1st	pads	discrete	no
1st/2nd	slab	discrete (rigid)	no
2nd	ballast	/	/

Parameters:

rail (Rail)
slab (Slab)
pad (DiscrPad)
mount_prop (dict[float, tuple[DiscrPad, None, None]])
distance (float)
num_mount (int)

rail¶

Rail instance.

Type:: Rail

slab¶

Slab instance.

Type:: Slab

pad¶

Discrete pad instance.

Type:: DiscrPad

distance¶

Distance between mounting positions.

Type:: float, default=0.6

num_mount¶

Number of mounting positions.

Type:: int, default=100

mount_prop¶

Dictionary for discrete mounting positions (x-> (Pad, None)).

Type:: dict[float, tuple[DiscrPad, None, None]]

l_track¶

Track length \([m]\). (May change slightly after discretization. Results from the number of mounting positions and the mounting distances).

Type:: float, default=100.0

Example

>>> from rolland.database.rail.db_rail import UIC60
>>> from rolland.components import DiscrPad, Slab
>>> from rolland.track import SimplePeriodicSlabSingleRailTrack

>>> thepad = DiscrPad(sp = [300*10**6, 0], dp = [30000, 0])
>>> theslab = Slab(ms = 250)
>>> track = SimplePeriodicSlabSingleRailTrack(
...     rail=UIC60,
...     pad=thepad,
...     slab=theslab,
...     distance=0.6,
...     num_mount=100)
...

calc_mount_prop(change=None)[source]¶: Calculate the mounting properties.