Enable JavaScript to interact with content and submit forms on Wolfram websites. Learn how

WOLFRAM SYSTEM MODELER

ContactRing

Normal and friction contact forces between disk and housing

Diagram

Wolfram Language

In[1]:=

SystemModel["RotatingMachinery.Supports.ContactRing"]

Out[1]:=

Information

Contact model

The component calculates normal and friction contact forces between disk and housing. The forces are zero until the deflection is larger than the parameter GapShaftHousing.

Figure 1: Contact parameters tab.

The stiffness and damping coefficients for the contact force in the normal direction are kInSurface and damping.

The friction coefficient has a static and a dynamic part. To avoid numerical problems, the friction behavior has been smoothened with the function TripleS_Func.

Parameters (7)

kInSurface	Value: 5000000 Type: Real (N/m) Description: Spring constant of in-plane motion
damping	Value: 10000 Type: Real (N⋅s/m) Description: Damping of in-plane motion
mu_static	Value: 0 Type: Real Description: Static friction coefficient
mu_dynamic	Value: 0 Type: Real Description: Dynamic friction coefficient
housingDiameter	Value: 1.1 Type: Real (m) Description: Inner diameter of the housing
gapShaftHousing	Value: 0.05 Type: Real (m) Description: Clearance between disk and housing
N_to_m	Value: world.defaultN_to_m Type: Real (N/m) Description: Force arrow scaling (length = force/N_to_m)

Connectors (2)

	frame_a	Type: Frame_a Description: Coordinate system a fixed to the component with one cut-force and cut-torque
	frame_b	Type: Frame_b Description: Coordinate system b fixed to the component with one cut-force and cut-torque

frame_a

Type: Frame_a

Description: Coordinate system a fixed to the component with one cut-force and cut-torque

frame_b

Type: Frame_b

Description: Coordinate system b fixed to the component with one cut-force and cut-torque

Components (2)

	world	Type: World Description: World coordinate system + gravity field + default animation definition
	arrow	Type: Arrow Description: Visualizing an arrow with variable size

world

Type: World

Description: World coordinate system + gravity field + default animation definition

arrow

Type: Arrow

Description: Visualizing an arrow with variable size

Used in Examples (4)

	ClampedRotor RotatingMachinery.Examples.ContactAnalysis Study of contact forces between a disk and a housing
	NoClearance RotatingMachinery.Examples.ContactAnalysis Inspection of deflection of a free rotor without clearance
	RunningUpRotorClearance RotatingMachinery.Examples.ContactAnalysis Calculation of deflection for a rotor with a surrounding and a clearance
	SlowingRotorClearance RotatingMachinery.Examples.ContactAnalysis Application of a running down rotor deflection with a clearance