Fixed

Represents a mechanical rotational element fixed at a specified angle.

This component models a shaft that is rigidly clamped or fixed in its housing, preventing any rotation. The angle of this fixed shaft, phi0, is a configurable parameter. It effectively acts as an angular boundary condition in a 1D rotational mechanical system. The core behavior is defined by the equation that sets the angle of its connection spline (spline.phi) to this fixed parameter phi0:

$$spline.phi=phi0$$

Usage

Fixed(phi0=0.0)

Parameters:

Name	Description	Units	Default value
phi0	The prescribed fixed angle of the shaft with respect to the housing.	rad	0

Connectors

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

Behavior

$$\begin{array}{rl}\mathtt{spline}\mathtt{.}\mathtt{phi}\left(t\right)& =\mathtt{phi}\mathtt{0}\end{array}$$

Source

# Represents a mechanical rotational element fixed at a specified angle.
#
# This component models a shaft that is rigidly clamped or fixed in its housing,
# preventing any rotation. The angle of this fixed shaft, `phi0`, is a
# configurable parameter. It effectively acts as an angular boundary
# condition in a 1D rotational mechanical system. The core behavior is
# defined by the equation that sets the angle of its connection spline
# (`spline.phi`) to this fixed parameter `phi0`:
# ```math
# spline.phi = phi0
# ```
component Fixed
  # Rotational connector representing the mechanical interface of the fixed shaft.
  spline = Spline() [{"Dyad": {"placement": {"icon": {"x1": 450, "y1": -50, "x2": 550, "y2": 50}}}}]
  # The prescribed fixed angle of the shaft with respect to the housing.
  parameter phi0::Angle = 0.0
relations
  spline.phi = phi0
metadata {"Dyad": {"icons": {"default": "dyad://RotationalComponents/Fixed.svg"}}}
end

Flattened Source

# Represents a mechanical rotational element fixed at a specified angle.
#
# This component models a shaft that is rigidly clamped or fixed in its housing,
# preventing any rotation. The angle of this fixed shaft, `phi0`, is a
# configurable parameter. It effectively acts as an angular boundary
# condition in a 1D rotational mechanical system. The core behavior is
# defined by the equation that sets the angle of its connection spline
# (`spline.phi`) to this fixed parameter `phi0`:
# ```math
# spline.phi = phi0
# ```
component Fixed
  # Rotational connector representing the mechanical interface of the fixed shaft.
  spline = Spline() [{"Dyad": {"placement": {"icon": {"x1": 450, "y1": -50, "x2": 550, "y2": 50}}}}]
  # The prescribed fixed angle of the shaft with respect to the housing.
  parameter phi0::Angle = 0.0
relations
  spline.phi = phi0
metadata {"Dyad": {"icons": {"default": "dyad://RotationalComponents/Fixed.svg"}}}
end

Test Cases

No test cases defined.

Related

• Examples

• Experiments

• Analyses

• Tests

  • TwoInertiasWithDrivingTorque