modelRollingFriction
Constant friction torque with linear range around zero
Extends from Modelica.Mechanics.Rotational.Interfaces.PartialTorque (Partial model of a torque acting at the flange (accelerates the flange)), 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).
Information
The friction model is implemented as a constant breaking torque similar to Translational.RollingFriction.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | useSupport (from PartialElementaryOneFlangeAndSupport2) | false | = true, if support flange enabled, otherwise implicitly grounded |
| Modelica.Units.SI.Torque | tau_constant | Constant friction torque (if negative, torque is acting as load) | |
| Modelica.Units.SI.AngularVelocity | w_linear | 0.1 | Region of linear torque vs angular speed |
| Boolean | useHeatPort (from PartialElementaryConditionalHeatPortWithoutT) | false | = true, if heatPort is enabled |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Flange_b | flange (from PartialElementaryOneFlangeAndSupport2) | Flange of shaft | |
| Support | support (from PartialElementaryOneFlangeAndSupport2) | Support/housing of component | |
| HeatTransfer.Interfaces.HeatPort_a | heatPort (from PartialElementaryConditionalHeatPortWithoutT) | Optional port to which dissipated losses are transported in form of heat |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Angle | phi (from PartialTorque) | Angle of flange with respect to support (= flange.phi - support.phi) | |
| Modelica.Units.SI.Torque | tau | Friction torque | |
| Modelica.Units.SI.AngularVelocity | w | Angular velocity | |
| SI.Power | lossPower (from PartialElementaryConditionalHeatPortWithoutT) | Loss power leaving component via heatPort (> 0, if heat is flowing out of component) |