38.2.2.1. Group Ball Bearing Property
Figure 38.14 Definition of Bearing Property
Figure 38.15 BallBearingGroup dialog box [Group Ball Bearing Property]
Bearing Body
Inner Ring Property: Defines the material property of inner ring.
Figure 38.16 Bearing Body Info dialog box
Outer Ring Property: Defines the material property of outer ring and characteristic values for Beam Force. For more information, click here.
Figure 38.17 Bearing Body Info dialog box
Ball Property: Defines the material property of ball.
Bearing Contact: Defines characteristic values for each contact. Refer to Bearing Contact Characteristic.
Inner Ring and Ball Contact Property: The sphere in torus contact is used.
Outer Ring and Ball Contact Property: The sphere in torus contact is used.
Outer Ring and Outer Body Contact Property
Radial Clearance: Defines the clearance in the radial direction.
Outer Body Width: Defines the width of the outer body.
Axial Clearance: Defines the clearance in the axial direction. This option is activated, when the user selects Front, Rear or Both as Flange.
Flange: The user can close faces of outer body.
None: Does not close the faces of outer body. It is possible that the shaft can get out of the outer body.
Front: Closes the front face of outer body.
Rear: Closes the rear face of outer body.
Both: Closes the front and rear face of outer body.
Figure 38.18 Geometric information of outer body (case)
Inner Slip Ratio: Defines the slip ratio for the ball and the inner ring.
Outer Slip Ratio: Defines the slip ratio for the ball and the outer ring.
\(\begin{aligned} & (1-{{\xi }_{i}})\frac{{{D}_{ri}}}{2}({{\theta }_{i}}-{{\theta }_{o}})=\frac{{{D}_{ba}}}{2}{{\theta }_{ba}} \\ & (1-{{\xi }_{o}})\frac{{{D}_{ro}}}{2}{{\theta }_{o}}=\frac{{{D}_{ba}}}{2}{{\theta }_{ba}} \\ & \therefore {{\theta }_{o}}=\frac{(1-{{\xi }_{i}}){{D}_{ri}}}{(1-{{\xi }_{i}}){{D}_{ri}}+(1-{{\xi }_{o}}){{D}_{ro}}}{{\theta }_{i}} \\ & \therefore {{\theta }_{ba}}=\frac{{{D}_{ro}}}{{{D}_{ba}}}\left[ \frac{(1-{{\xi }_{i}})(1-{{\xi }_{o}}){{D}_{ri}}}{(1-{{\xi }_{i}}){{D}_{ri}}+(1-{{\xi }_{o}}){{D}_{ro}}} \right]{{\theta }_{i}} \\ \end{aligned}\)
\({{\xi }_{i}}\): Slip ratio for the roller and inner ring (\(0\le {{\xi }_{i}}\le 1\))
\({{\xi }_{o}}\): Slip ratio for the roller and outer ring (\(0\le {{\xi }_{o}}\le 1\))
Each Rendering: The selected mode can be displayed in Each Render mode.
38.2.2.1.1. Outer Ring Beam Property
The segments of the outer ring are connected by beam forces. For more information, refer to Beam Force supported as a Force entity.
Figure 38.19 Segments of the outer ring
Circle Type
Figure 38.20 Circle type beam
Radius: Enters the radius of the circle.
Damping Ratio: Enters the ratio for damping coefficient.
Get Values from Library: Young’s Modulus and Poisson’s Ratio can be calculated from Library.
Young’s Modulus: Specifies the young’s modulus of elasticity for the beam material. This value is calculated automatically using Get Values from Library function.
Poisson’s Ratio: Specifies the poisson’s ratio of elasticity for the beam material. This value is calculated automatically using Get Values from Library function.
Shear Modulus: Specifies the shear modulus of the beam. This value is calculated from Young’s Modulus and Poisson’s Ratio automatically using Cal. Function
Rectangle
Figure 38.21 Rectangle type beam
Width: Enters the radius of the rectangle.
Height: Enters the height of the rectangle.
Damping Ratio: Enters the ratio for damping coefficient.
Get Values from Library: Young’s Modulus and Poisson’s Ratio can be calculated from Library.
Young’s Modulus: Specifies the young’s modulus of elasticity for the beam material. This value is calculated automatically using Get Values from Library function.
Poisson’s Ratio: Specifies the poisson’s ratio of elasticity for the beam material. This value is calculated automatically using Get Values from Library function.
Shear Modulus: Specifies the shear modulus of the beam. This value is calculated from Young’s Modulus and Poisson’s Ratio automatically using Cal. Function