Package ModelicaExtras.Mechanics.RotationalAdditional components to model 1-dimensional, rotational mechanical systems
Package ModelicaExtras.Mechanics.Rotational
Standard package icon.
Extends from Modelica.Icons.Package (Icon for standard packages).
| Name | Description |
|---|---|
IdealDifferential | Ideal differential gear without inertia |
VariableDamper | Linear 1D rotational damper |
VariableSpring | 1D rotational spring with variable stiffness |
Model ModelicaExtras.Mechanics.Rotational.IdealDifferential| Type | Name | Default | Description |
|---|---|---|---|
Real | ratio | 1 | Transmission ratio (2 * flange_a.phi / (flange_left.phi + flange_right.phi)) |
| Type | Name | Description |
|---|---|---|
Flange_a | flange_a | Flange of driving shaft |
Flange_b | flange_left | Flange of left shaft |
Flange_b | flange_right | Flange of right shaft |
Model ModelicaExtras.Mechanics.Rotational.VariableSpring
A linear 1D rotational spring. The component can be connected either between two inertias/gears to describe the shaft elasticity, or between a inertia/gear and the housing (component Fixed), to describe a coupling of the element with the housing via a spring.
Extends from Modelica.Mechanics.Rotational.Interfaces.PartialCompliant (Partial model for the compliant connection of two rotational 1-dim. shaft flanges).
| Type | Name | Default | Description |
|---|---|---|---|
Angle | phi_rel0 | 0 | Unstretched spring angle |
| Type | Name | Description |
|---|---|---|
input RealInput | c | Variable spring constant |
Flange_a | flange_a | Left flange of compliant 1-dim. rotational component |
Flange_b | flange_b | Right flange of compliant 1-dim. rotational component |
Model ModelicaExtras.Mechanics.Rotational.VariableDamper
Linear, velocity dependent damper element. It can be either connected between an inertia or gear and the housing (component Fixed), or between two inertia/gear elements.
See also the discussion State Selection in the User's Guide of the Rotational library.
Extends from Modelica.Mechanics.Rotational.Interfaces.PartialCompliantWithRelativeStates (Partial model for the compliant connection of two rotational 1-dim. shaft flanges where the relative angle and speed are used as preferred states) and Modelica.Thermal.HeatTransfer.Interfaces.PartialElementaryConditionalHeatPortWithoutT (Partial model to include a conditional HeatPort in order to dissipate losses, used for textual modeling, i.e., for elementary models).
| Type | Name | Default | Description |
|---|---|---|---|
Angle | phi_nominal | 1e-4 | Nominal value of phi_rel (used for scaling) |
StateSelect | stateSelect | StateSelect.prefer | Priority to use phi_rel and w_rel as states |
Boolean | useHeatPort | false | =true, if heatPort is enabled |
| Type | Name | Description |
|---|---|---|
input RealInput | d | Variable damping factor |
Flange_a | flange_a | Left flange of compliant 1-dim. rotational component |
Flange_b | flange_b | Right flange of compliant 1-dim. rotational component |
HeatPort_a | heatPort | Optional port to which dissipated losses are transported in form of heat |