LIBRARY

Components.Damper

Models a linear rotational mechanical damping element where torque is proportional to relative angular velocity.

This component describes a viscous damper for 1D rotational systems. It generates a torque that opposes the relative motion between its two mechanical rotational ports (flanges). The relationship between the torque and the relative angular velocity across the damper is linear and governed by the damping constant d. The defining equation is:

where d is the damping constant (parameter) and is the relative angular velocity between the component's flanges.

This component extends from RotationalComponents.Interfaces.PartialCompliantWithRelativeStates

Usage

RotationalComponents.Components.Damper(d)

Parameters:

Name	Description	Units	Default value
d	Damping coefficient, relating torque to relative angular velocity.	N.m.s/rad

Connectors

• spline_a - This connector represents a rotational spline with angle and torque as the potential and flow variables, respectively. (Spline)

• spline_b - This connector represents a rotational spline with angle and torque as the potential and flow variables, respectively. (Spline)

Variables

Name	Description	Units
phi_rel	Relative rotation angle between spline_b and spline_a	rad
tau	Torque transmitted between the splines	N.m
w_rel	Relative angular velocity between splines	rad/s
a_rel	Relative angular acceleration between splines	rad/s2

Behavior

Source

"""
Models a linear rotational mechanical damping element where torque is proportional to relative angular velocity.

This component describes a viscous damper for 1D rotational systems. It generates a torque that opposes
the relative motion between its two mechanical rotational ports (flanges). The relationship between the
torque \$\tau\$ and the relative angular velocity \$w_{rel}\$ across the damper is linear and
governed by the damping constant `d`. The defining equation is:
```math
\tau = d \\cdot w_{rel}
```
where `d` is the damping constant (parameter) and \$w_{rel}\$ is the relative angular velocity
between the component's flanges.
"""
component Damper
  extends RotationalComponents.Interfaces.PartialCompliantWithRelativeStates
  "Damping coefficient, relating torque to relative angular velocity."
  parameter d::RotationalDampingConstant
relations
  tau = d * w_rel
metadata {"Dyad": {"icons": {"default": "dyad://RotationalComponents/Damper.svg"}}}
end

Flattened Source

"""
Models a linear rotational mechanical damping element where torque is proportional to relative angular velocity.

This component describes a viscous damper for 1D rotational systems. It generates a torque that opposes
the relative motion between its two mechanical rotational ports (flanges). The relationship between the
torque \$\tau\$ and the relative angular velocity \$w_{rel}\$ across the damper is linear and
governed by the damping constant `d`. The defining equation is:
```math
\tau = d \\cdot w_{rel}
```
where `d` is the damping constant (parameter) and \$w_{rel}\$ is the relative angular velocity
between the component's flanges.
"""
component Damper
  "First rotational spline interface"
  spline_a = Spline() {"Dyad": {"placement": {"icon": {"x1": -50, "y1": 450, "x2": 50, "y2": 550}}}}
  "Second rotational spline interface"
  spline_b = Spline() {"Dyad": {"placement": {"icon": {"x1": 950, "y1": 450, "x2": 1050, "y2": 550}}}}
  "Relative rotation angle between spline_b and spline_a"
  variable phi_rel::Angle
  "Torque transmitted between the splines"
  variable tau::Torque
  "Relative angular velocity between splines"
  variable w_rel::AngularVelocity
  "Relative angular acceleration between splines"
  variable a_rel::AngularAcceleration
  "Damping coefficient, relating torque to relative angular velocity."
  parameter d::RotationalDampingConstant
relations
  phi_rel = spline_b.phi - spline_a.phi
  spline_b.tau = tau
  spline_a.tau = -tau
  der(phi_rel) = w_rel
  der(w_rel) = a_rel
  tau = d * w_rel
metadata {"Dyad": {"icons": {"default": "dyad://RotationalComponents/Damper.svg"}}}
end

Test Cases

No test cases defined.

Related

• Examples

• Experiments

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