DirectInertia
InverseInertia
SpringDamper
Spring
SpringDamperNoRelativeStates
Utility classes used by rotational example models
This package contains utility models and functions used by some of the example models from the rotational mechanics package.
Extends from Modelica.Icons.UtilitiesPackage (Icon for utility packages).
| Name | Description |
|---|---|
| DirectInertia
|
Input/output block of a direct inertia model |
| InverseInertia
|
Input/output block of an inverse inertia model |
| SpringDamper
|
Input/output block of a spring/damper model |
| Spring
|
Input/output block of a spring model |
| SpringDamperNoRelativeStates
|
Linear 1D rotational spring and damper in parallel (phi and w are not used as states) |
Modelica.Mechanics.Rotational.Examples.Utilities.DirectInertiaInput/output block of a direct inertia model
A rotational component with pure signal interface which can be applied for
a FMU (Functional Mock-up Unit)
exchange.
The input torque tauDrive is applied on one side of a rotational
component with inertia whereby the input torque tau is applied
on the other side of it.
Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).
| Name | Description |
|---|---|
| J | Inertia [kg.m2] |
| Name | Description |
|---|---|
| tauDrive | Accelerating torque acting at flange (= -flange.tau) [N.m] |
| phi | Inertia moves with angle phi due to torque tau [rad] |
| w | Inertia moves with speed w due to torque tau [rad/s] |
| a | Inertia moves with acceleration a due to torque tau [rad/s2] |
| tau | Torque to drive the inertia [N.m] |
Modelica.Mechanics.Rotational.Examples.Utilities.InverseInertiaInput/output block of an inverse inertia model
A rotational component with pure signal interface which can be applied for
a FMU (Functional Mock-up Unit)
exchange.
Based on the kinematic inputs applied on a component with inertia
the output torque tau is returned.
Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).
| Name | Description |
|---|---|
| J | Inertia [kg.m2] |
| Name | Description |
|---|---|
| phi | Angle to drive the inertia [rad] |
| w | Speed to drive the inertia [rad/s] |
| a | Acceleration to drive the inertia [rad/s2] |
| tau | Torque needed to drive the flange according to phi, w, a [N.m] |
Modelica.Mechanics.Rotational.Examples.Utilities.SpringDamperInput/output block of a spring/damper model
A linear 1D rotational spring and damper in parallel with pure signal interface which can be applied for a FMU (Functional Mock-up Unit) exchange.
Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).
| Name | Description |
|---|---|
| c | Spring constant [N.m/rad] |
| d | Damping constant [N.m.s/rad] |
| phi_rel0 | Unstretched spring angle [rad] |
| Name | Description |
|---|---|
| phi1 | Angle of left flange of force element [rad] |
| w1 | Speed to left flange of force element [rad/s] |
| tau1 | Torque generated by the force element [N.m] |
| phi2 | Angle of right flange of force element [rad] |
| w2 | Speed to right flange of force element [rad/s] |
| tau2 | Torque generated by the force element [N.m] |
Modelica.Mechanics.Rotational.Examples.Utilities.SpringInput/output block of a spring model
A linear 1D rotational spring with pure signal interface which can be applied for a FMU (Functional Mock-up Unit) exchange.
Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).
| Name | Description |
|---|---|
| c | Spring constant [N.m/rad] |
| phi_rel0 | Unstretched spring angle [rad] |
| Name | Description |
|---|---|
| phi1 | Angle of left flange of force element [rad] |
| tau1 | Torque generated by the force element [N.m] |
| phi2 | Angle of right flange of force element [rad] |
| tau2 | Torque generated by the force element [N.m] |
Modelica.Mechanics.Rotational.Examples.Utilities.SpringDamperNoRelativeStatesLinear 1D rotational spring and damper in parallel (phi and w are not used as states)
A spring and damper element connected in parallel. The component can be connected either between two masses to describe the joint elasticity and damping, or between a mass and the housing (component Fixed), to describe a coupling of the element with the housing via a spring/damper.
This is the same element as Rotational.Components.SpringDamper but with the only difference, that the relative quantities are not used as states. If the relative states are potentially used as states, "a_rel = der(w_rel)" is present, and then exporting this model as FMU requires to also have the accelerations in the flanges as inputs, which is usually not desired for a force element.
Extends from Modelica.Mechanics.Rotational.Interfaces.PartialCompliant (Partial model for the compliant connection of two rotational 1-dim. shaft flanges), 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).
| Name | Description |
|---|---|
| c | Spring constant [N.m/rad] |
| d | Damping constant [N.m.s/rad] |
| phi_rel0 | Unstretched spring angle [rad] |
| useHeatPort | = true, if heatPort is enabled |
| Initialization | |
| phi_rel | Relative rotation angle (= flange_b.phi - flange_a.phi) [rad] |
| Name | Description |
|---|---|
| flange_a | Left flange of compliant 1-dim. rotational component |
| flange_b | Right flange of compliant 1-dim. rotational component |
| heatPort | Optional port to which dissipated losses are transported in form of heat |