A Study on Dynamic Characteristics of Satellite Antenna System considering 3D Revolute Clearance Joint

Table 2

Parameters used in the dynamic simulation.

Parameters	Value
Driving moment of vertical axis (Nm)	10sin(2)
Driving moment of horizontal axis (Nm)	4sin(2)
Length of shaft 1 (m)	0.5
Length of shaft 2 (m)	0.5
Bearing length (m)	0.05
Bearing radius (m)	0.01
Bearing thickness (m)	0.002
Journal length (m)	0.054
Journal radius (m)	0.0098
Radius of journal flange (m)	0.014
Thickness of journal flange (m)	0.002
Radial clearance size (mm)	0.2
Axial clearance size (mm)	0.2
Static friction coefficient	0.15
Dynamic friction coefficient	0.1
Critical velocity of static friction (m/s)	0.1
Critical velocity of the maximum dynamic friction (m/s)	1.0
Restitution coefficient	0.9
Step size (s)	0.0001