PartialRigid

Models a massless, rigid connection of a defined length between two translational 1D flanges.

This partial component defines an ideal rigid bar of length L that connects two translational 1D mechanical flanges, flange_a and flange_b. The component's position is characterized by the absolute coordinate s of its center point. The positions of the flanges are then kinematically constrained relative to this center point and the length L. The key equations governing these positions are:

$$flange\mathrm{\_}a.s=s-\frac{L}{2}$$$$flange\mathrm{\_}b.s=s+\frac{L}{2}$$

This also implies that the distance between the flanges is fixed:

$$flange\mathrm{\_}b.s-flange\mathrm{\_}a.s=L$$

As a partial component, it is intended to be used as a base for other, more complete components.

Usage

PartialRigid(L=0.0)

Parameters:

Name	Description	Units	Default value
L	Length of component, from left flange to right flange	m	0

Connectors

• flange_a - (Flange)

• flange_b - (Flange)

Variables

Name	Description	Units
s	Absolute position of center of component	m

Source

# Models a massless, rigid connection of a defined length between two translational 1D flanges.
#
# This partial component defines an ideal rigid bar of length `L` that connects two
# translational 1D mechanical flanges, `flange_a` and `flange_b`. The component's
# position is characterized by the absolute coordinate `s` of its center point.
# The positions of the flanges are then kinematically constrained relative to this
# center point and the length `L`. The key equations governing these positions are:
# ```math
# flange\_a.s = s - \frac{L}{2}
# ```
# ```math
# flange\_b.s = s + \frac{L}{2}
# ```
# This also implies that the distance between the flanges is fixed:
# ```math
# flange\_b.s - flange\_a.s = L
# ```
# As a `partial component`, it is intended to be used as a base for other, more complete components.
partial component PartialRigid
  # Left translational 1D flange
  flange_a = Flange() [{"Dyad": {"placement": {"icon": {"x1": -50, "y1": 450, "x2": 50, "y2": 550}}}}]
  # Right translational 1D flange
  flange_b = Flange() [{"Dyad": {"placement": {"icon": {"x1": 950, "y1": 450, "x2": 1050, "y2": 550}}}}]
  # Absolute position of center of component
  variable s::Dyad.Position
  # Length of component, from left flange to right flange
  parameter L::Length = 0.0
relations
  flange_a.s = s-L/2
  flange_b.s = s+L/2
end

Flattened Source

# Models a massless, rigid connection of a defined length between two translational 1D flanges.
#
# This partial component defines an ideal rigid bar of length `L` that connects two
# translational 1D mechanical flanges, `flange_a` and `flange_b`. The component's
# position is characterized by the absolute coordinate `s` of its center point.
# The positions of the flanges are then kinematically constrained relative to this
# center point and the length `L`. The key equations governing these positions are:
# ```math
# flange\_a.s = s - \frac{L}{2}
# ```
# ```math
# flange\_b.s = s + \frac{L}{2}
# ```
# This also implies that the distance between the flanges is fixed:
# ```math
# flange\_b.s - flange\_a.s = L
# ```
# As a `partial component`, it is intended to be used as a base for other, more complete components.
partial component PartialRigid
  # Left translational 1D flange
  flange_a = Flange() [{"Dyad": {"placement": {"icon": {"x1": -50, "y1": 450, "x2": 50, "y2": 550}}}}]
  # Right translational 1D flange
  flange_b = Flange() [{"Dyad": {"placement": {"icon": {"x1": 950, "y1": 450, "x2": 1050, "y2": 550}}}}]
  # Absolute position of center of component
  variable s::Dyad.Position
  # Length of component, from left flange to right flange
  parameter L::Length = 0.0
relations
  flange_a.s = s-L/2
  flange_b.s = s+L/2
metadata {}
end

Test Cases

This is setup code, that must be run before each test case.

using TranslationalComponents
using ModelingToolkit, OrdinaryDiffEqDefault
using Plots
using CSV, DataFrames

snapshotsdir = joinpath(dirname(dirname(pathof(TranslationalComponents))), "test", "snapshots")

"/home/actions-runner-10/.julia/packages/TranslationalComponents/khJb7/test/snapshots"

Related

• Examples

• Experiments

• Analyses