modelRollingFriction

Constant rolling force with linear range around zero speed

Extends from Modelica.Mechanics.Translational.Interfaces.PartialForce (Partial model of a force 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

Characteristica of the rolling friction model

constant friction force for v ≥ v_linear
friction force changes sign linearly for v < v_linear to achieve a continuous transition
parameter v_linear shall not be change except for numerical reasons

Type	Name	Default	Description
Boolean	useSupport (from PartialElementaryOneFlangeAndSupport2)	false	= true, if support flange enabled, otherwise implicitly grounded
Modelica.Units.SI.Force	f_constant		Constant friction force (if negative, force is acting as load)
Boolean	useHeatPort (from PartialElementaryConditionalHeatPortWithoutT)	false	= true, if heatPort is enabled
Tuning
Modelica.Units.SI.Velocity	v_linear	0.01	Speed limit of constant rolling friction (do not change unless required)

Type	Name	Description
Flange_b	flange (from PartialElementaryOneFlangeAndSupport2)	Flange of component
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

Type	Name	Description
SI.Length	s (from PartialElementaryOneFlangeAndSupport2)	Distance between flange and support (= flange.s - support.s)
SI.Force	f (from PartialForce)	Accelerating force acting at flange (= flange.f)
Modelica.Units.SI.Velocity	v	Speed
SI.Power	lossPower (from PartialElementaryConditionalHeatPortWithoutT)	Loss power leaving component via heatPort (> 0, if heat is flowing out of component)