rolland.components.ContPad

class rolland.components.ContPad(*, sp=[0.0, 0.0], etap=0, fresp=[0.0, 0.0], dp=[0.0, 0.0])[source]

Bases: object

Cont Pad Class.

Contains the properties of a continuous pad.

Parameters:

  • sp (list[float])

  • etap (float)

  • fresp (list[float])

  • dp (list[float])

sp

Vertical/lateral pad stiffness (per meter) \([N/m^2]\). Lateral value can be set to zero when lateral rail deflections are omitted.

Type:

list[float], default=[0.0, 0.0]

etap

Pad loss factor \([-]\).

Type:

float

fresp

Vertical/lateral pad resonance frequencies \([Hz]\). These frequencies are needed for calculating the viscous damping coefficients if they are not provided. Lateral value can be set to zero when lateral rail deflections are omitted.

Type:

list[float], default=[0.0, 0.0]

dp

Vertical/lateral viscous damping coefficient (per meter) \([Ns/m^2]\). Lateral value can be set to zero when lateral rail deflections are omitted.

Type:

list[float], default=[0.0, 0.0]