TrainCar Icon

`TrainCar`

This component extends from TranslationalComponents.Mass

Usage

TrainCar(L=0.0, m, g=-9.80665, theta=0.0)

Parameters:

Name	Description	Units	Default value
`L`	Length of component, from left flange to right flange	m	0
`m`	Mass of the sliding mass	kg
`g`	Gravity (defaults to standard acceleration of gravity)	m/s2	-9.80665
`theta`	Angle of motion w.r.t. gravity, 0 = horizontal, pi / 2 = vertical with gravity pulling backward	rad	0

Connectors

flange_a - (Flange)
flange_b - (Flange)

Variables

Name	Description	Units
`s`	Absolute position of center of component	m
`v`	Absolute velocity of component	m/s
`a`	Absolute acceleration of component	m/s2

\[ \begin{align} \mathtt{flange\_a.s}\left( t \right) &= - \frac{1}{2} L + s\left( t \right) \\ \mathtt{flange\_b.s}\left( t \right) &= \frac{1}{2} L + s\left( t \right) \\ v\left( t \right) &= \frac{\mathrm{d} s\left( t \right)}{\mathrm{d}t} \\ a\left( t \right) &= \frac{\mathrm{d} v\left( t \right)}{\mathrm{d}t} \\ \left( a\left( t \right) + g \sin\left( \mathtt{theta} \right) \right) m &= \mathtt{flange\_b.f}\left( t \right) + \mathtt{flange\_a.f}\left( t \right) \end{align} \]

Source

component TrainCar
  extends TranslationalComponents.Mass
metadata {
  "JuliaSim": {"icons": {"default": "jsml://JuliaSimExampleComponents/mass.svg"}}
}
end

Flattened Source

component TrainCar
  flange_a = Flange() [{
    "JuliaSim": {"placement": {"icon": {"x1": -50, "y1": 450, "x2": 50, "y2": 550}}}
  }]
  flange_b = Flange() [{
    "JuliaSim": {"placement": {"icon": {"x1": 950, "y1": 450, "x2": 1050, "y2": 550}}}
  }]
  # Absolute position of center of component
  variable s::JSML.Position
  # Length of component, from left flange to right flange
  parameter L::Length = 0.0
  # Mass of the sliding mass
  parameter m::JSML.Mass
  # Absolute velocity of component
  variable v::Velocity
  # Absolute acceleration of component
  variable a::Acceleration
  # Gravity (defaults to standard acceleration of gravity)
  parameter g::Acceleration = -9.80665
  # Angle of motion w.r.t. gravity, 0 = horizontal, pi / 2 = vertical with gravity pulling backward
  parameter theta::Angle = 0.0
relations
  flange_a.s = s-L/2
  flange_b.s = s+L/2
  v = der(s)
  a = der(v)
  m*(a+g*sin(theta)) = flange_a.f+flange_b.f
metadata {
  "JuliaSim": {"icons": {"default": "jsml://JuliaSimExampleComponents/mass.svg"}}
}
end

Test Cases

Examples
Experiments
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