Damper

Linear 1D translational damper

This component extends from PartialCompliantWithRelativeStates

Usage

Damper(d)

Parameters:

Connectors

• flange_a - (Flange)
• flange_b - (Flange)

Variables

Behavior

\[ \begin{align} \mathtt{s\_rel}\left( t \right) &= \mathtt{flange\_b.s}\left( t \right) - \mathtt{flange\_a.s}\left( t \right) \\ \mathtt{v\_rel}\left( t \right) &= \frac{\mathrm{d} \mathtt{s\_rel}\left( t \right)}{\mathrm{d}t} \\ \mathtt{flange\_b.f}\left( t \right) &= f\left( t \right) \\ \mathtt{flange\_a.f}\left( t \right) &= - f\left( t \right) \\ f\left( t \right) &= d \mathtt{v\_rel}\left( t \right) \\ \mathtt{lossPower}\left( t \right) &= \mathtt{v\_rel}\left( t \right) f\left( t \right) \end{align} \]

Source

# Linear 1D translational damper
component Damper
  extends PartialCompliantWithRelativeStates
  parameter d::TranslationalDampingConstant
  variable f::JSML.Force
  variable lossPower::Power
relations
  f = d*v_rel
  lossPower = f*v_rel
metadata {
  "JuliaSim": {"icons": {"default": "jsml://TranslationalComponents/Damper.svg"}}
}
end

# Linear 1D translational damper
component Damper
  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}}}
  }]
  # Relative distance between `flange_b` and `flange_a`
  variable s_rel::Distance
  # Relative velocity between `flange_b` and `flange_a`
  variable v_rel::Velocity
  # Forces between the flanges
  variable f::JSML.Force
  parameter d::TranslationalDampingConstant
  variable lossPower::Power
relations
  s_rel = flange_b.s-flange_a.s
  v_rel = der(s_rel)
  flange_b.f = f
  flange_a.f = -f
  f = d*v_rel
  lossPower = f*v_rel
metadata {
  "JuliaSim": {"icons": {"default": "jsml://TranslationalComponents/Damper.svg"}}
}
end

Test Cases

Related

• Examples
• Experiments
• Analyses
• Tests
  • MassDamperSpringFixedTest