Bearings

class AngularContactBallBearing(**kwds)

Creates an analytical bearing that overtakes radial and axial loads in one direction.

The bearing is defined by the following dimensions:

Angular Contact Ball Bearing Geometry.

Name	Type	Symbol	Required	Default	Modifiable
active	Bool			True	\(\checkmark\)
bearing_clearance	Double			0.0
bearing_density	Double
contact_angle	Double	\(a0\)	\(\checkmark\)
contact_length_a	Double	\(a\)
damping_force	Bool			True
damping_ratio	Double			0.1
external_connection	Bool			False
friction_torque	Bool			False
id	Int			Auto
inner_connection_flex_body	Reference - FlexBody
inner_connection_flex_node	Int
inner_connection_part	Reference - Part
inner_density	Double
inner_diameter	Double	\(d\)	\(\checkmark\)
inner_race_conformity	Double			0.52
inner_shoulder_diameter_1	Double	\(d1\)
inner_shoulder_diameter_2	Double	\(d2\)
label	Str
lubricant_viscosity	Double			0.0
lubrication_method	Enum			grease
na	Int			60
name	Str
nc	Int			6
no	Int			2
number_of_rollers	Int		\(\checkmark\)
outer_connection_flex_body	Reference - FlexBody
outer_connection_flex_node	Int
outer_connection_part	Reference - Part
outer_density	Double
outer_diameter	Double	\(D\)	\(\checkmark\)
outer_race_conformity	Double			0.53
outer_shoulder_diameter_1	Double	\(D1\)
output_rm	Reference - Marker
pitch_diameter	Double	\(dp\)	\(\checkmark\)
poisson_ratio	Double
rm	Reference - Marker		\(\checkmark\)
roller_density	Double
roller_diameter	Double	\(dr\)	\(\checkmark\)
roller_pass_frequency	Bool			True
rollers_force_graphics	Bool			False
simplified_graphics	Bool			False
static_load_rating	Double			0.0
transition_velocity	Double			0.1
vec_gra_scale	Double			1.0
width	Double	\(b\)	\(\checkmark\)
young_modulus	Double

active

Defines the state of the object.

Type=Bool, Default=True, Modifiable

bearing_clearance

The bearing clearance of the bearing.

Type=Double, Default=0.0

bearing_density

The bearing elements density.

See Comment 2.

Type=Double

contact_angle

The contact angle of the bearing, defined in degrees [deg].

Type=Double, Required

contact_length_a

The distance from the one face of the bearing to intersection point of rolling elements contact line and bearing axis.

Type=Double

damping_force

A flag that activates damping force.

Type=Bool, Default=True

damping_ratio

The damping factor of the bearing. Used only when damping_force flag is True.

Type=Double, Default=0.1

external_connection

A flag that allows to apply external connection to ring parts. The validation is ignored when this flag is activated.

Type=Bool, Default=False

friction_torque

A flag that activates friction torque.

Type=Bool, Default=False

id

The id of the object.

Type=Int

inner_connection_flex_body

The connection flex body to the inner ring part.

Type=Reference (FlexBody)

inner_connection_flex_node

The connection flex node to the inner ring part.

Type=Int

inner_connection_part

The Part that is connected to the inner ring.

See Comment 1.

Type=Reference (Part)

inner_density

The inner ring density. Default value calculated in [kg/mm^3].

Type=Double

inner_diameter

The inner diameter of the bearing.

Type=Double, Required

inner_race_conformity

The inner race conformity (fi) expresses the relation between the rolling element diameter (dr) and the inner raceway groove radius (ri).

fi = ri/dr, 0.51 < fi < 0.54

Type=Double, Default=0.52

inner_shoulder_diameter_1

The big shoulder diameter of inner ring.

Type=Double

inner_shoulder_diameter_2

The small shoulder diameter of inner ring.

Type=Double

label

The label of the composite element.

Type=Str

lubricant_viscosity

The viscosity of the bearing lubricant. Measured in [cSt]. Used only when friction_torque flag is True.

Type=Double, Default=0.0

lubrication_method

The lubrication method of the bearing. Used only when friction_torque flag is True.

Type=Enum, Default=grease

Permitted values are:

• grease

• oil_bath

• oil_jet

• oil_mist

na

Parameter that defines the number of nodes in the perimeter of rings graphics.

Type=Int, Default=60

name

Defines a nametag for the object.

Type=Str

nc

Parameter that defines the number of nodes in the raceway of rings graphics.

Type=Int, Default=6

no

Parameter that defines the number of nodes in the width of rings graphics.

Type=Int, Default=2

number_of_rollers

The number of rollers at the bearing in a single row.

Type=Int, Required

outer_connection_flex_body

The connection flex body to the outer ring part.

Type=Reference (FlexBody)

outer_connection_flex_node

The connection flex node to the outer ring part.

Type=Int

outer_connection_part

The Part that is connected to the outer ring.

See Comment 1.

Type=Reference (Part)

outer_density

The outer ring density. Default value calculated in [kg/mm^3].

Type=Double

outer_diameter

The outer diameter of the bearing.

Type=Double, Required

outer_race_conformity

The outer race conformity (fo) expresses the relation between the rolling element diameter (dr) and the outer raceway groove radius (ro).

fo = ro/dr, 0.51 < fo < 0.54

Type=Double, Default=0.53

outer_shoulder_diameter_1

The small shoulder diameter of outer ring.

Type=Double

output_rm

The Marker in which the results are written.

Type=Reference (Marker)

pitch_diameter

The pitch diameter of the bearing.

Type=Double, Required

poisson_ratio

The poisson ratio of the bearing elements (rings and rollers).

See Comment 2.

Type=Double

rm

The reference marker of the composite element.

Type=Reference (Marker), Required

roller_density

The rolling elements density. Cage part mass/inertia properties are calculated from rolling elements.

Type=Double

roller_diameter

The roller diameter of the bearing.

Type=Double, Required

roller_pass_frequency

A flag that defines that the rollers are rotated by the roller pass frequency in the theoretical force calculation.

Type=Bool, Default=True

rollers_force_graphics

A flag that generates force vectors graphics on the rolling elements.

Type=Bool, Default=False

simplified_graphics

A flag that activates simplified graphic representation of the bearing.

Type=Bool, Default=False

static_load_rating

The static load rating of the bearing. Used only in friction torque calculation

Type=Double, Default=0.0

transition_velocity

The angular velocity which defines the transition phase of the friction torque. Measured in [rad/sec].

Type=Double, Default=0.1

vec_gra_scale

A scale that defines the size of the output rollers force graphics.

For default value 1.0, the vector length will be 3 * pitch_diameter,when the displacement of the bearing is 0.01 * roller_diameter.

Type=Double, Default=1.0

width

The width of the bearing.

Type=Double, Required

young_modulus

Young’s modulus of the bearing elements (rings and rollers). The default value is calculated in [N/mm^2].

See Comment 2.

Type=Double

class CylindricalRollerBearing(**kwds)

Creates an analytical bearing that overtakes the primary radial load.

The bearing is defined by the following dimensions:

Cylindrical Roller Bearing Geometry.

Name	Type	Symbol	Required	Default	Modifiable
active	Bool			True	\(\checkmark\)
axial_constraint	Bool			False
bearing_clearance	Double			0.0
bearing_density	Double
contact_angle	Double	\(a0\)		0.0
damping_force	Bool			True
damping_ratio	Double			0.1
effective_roller_length	Double		\(\checkmark\)
external_connection	Bool			False
friction_torque	Bool			False
id	Int			Auto
inner_connection_flex_body	Reference - FlexBody
inner_connection_flex_node	Int
inner_connection_part	Reference - Part
inner_density	Double
inner_diameter	Double	\(d\)	\(\checkmark\)
inner_shoulder_diameter	Double
label	Str
lubricant_viscosity	Double			0.0
lubrication_method	Enum			grease
na	Int			60
name	Str
nc	Int			6
no	Int			2
number_of_rollers	Int		\(\checkmark\)
outer_connection_flex_body	Reference - FlexBody
outer_connection_flex_node	Int
outer_connection_part	Reference - Part
outer_density	Double
outer_diameter	Double	\(D\)	\(\checkmark\)
outer_shoulder_diameter	Double
output_rm	Reference - Marker
pitch_diameter	Double	\(dp\)	\(\checkmark\)
rm	Reference - Marker		\(\checkmark\)
roller_density	Double
roller_diameter	Double	\(dr\)	\(\checkmark\)
roller_length	Double	\(L\)	\(\checkmark\)
roller_pass_frequency	Bool			True
rollers_force_graphics	Bool			False
simplified_graphics	Bool			False
transition_velocity	Double			0.1
vec_gra_scale	Double			1.0
width	Double	\(b\)	\(\checkmark\)

active

Defines the state of the object.

Type=Bool, Default=True, Modifiable

axial_constraint

A flag that activates an axial constraint in CRBs to model ribs axial stiffness

Type=Bool, Default=False

bearing_clearance

The bearing clearance of the bearing.

Type=Double, Default=0.0

bearing_density

The bearing elements density.

See Comment 2.

Type=Double

contact_angle

The contact angle of the bearing.

Type=Double, Default=0.0

damping_force

A flag that activates damping force.

Type=Bool, Default=True

damping_ratio

The damping factor of the bearing. Used only when damping_force flag is True.

Type=Double, Default=0.1

effective_roller_length

The effective length of the rolling elements. Where the contact occurs.

Type=Double, Required

external_connection

A flag that allows to apply external connection to ring parts. The validation is ignored when this flag is activated.

Type=Bool, Default=False

friction_torque

A flag that activates friction torque.

Type=Bool, Default=False

id

The id of the object.

Type=Int

inner_connection_flex_body

The connection flex body to the inner ring part.

Type=Reference (FlexBody)

inner_connection_flex_node

The connection flex node to the inner ring part.

Type=Int

inner_connection_part

The Part that is connected to the inner ring.

See Comment 1.

Type=Reference (Part)

inner_density

The inner ring density. Default value calculated in [kg/mm^3].

Type=Double

inner_diameter

The inner diameter of the bearing.

Type=Double, Required

inner_shoulder_diameter

The shoulder diameter of the inner ring.

Type=Double

label

The label of the composite element.

Type=Str

lubricant_viscosity

The viscosity of the bearing lubricant. Measured in [cSt]. Used only when friction_torque flag is True.

Type=Double, Default=0.0

lubrication_method

The lubrication method of the bearing. Used only when friction_torque flag is True.

Type=Enum, Default=grease

Permitted values are:

• grease

• oil_bath

• oil_jet

• oil_mist

na

Parameter that defines the number of nodes in the perimeter of rings graphics.

Type=Int, Default=60

name

Defines a nametag for the object.

Type=Str

nc

Parameter that defines the number of nodes in the raceway of rings graphics.

Type=Int, Default=6

no

Parameter that defines the number of nodes in the width of rings graphics.

Type=Int, Default=2

number_of_rollers

The number of rollers at the bearing in a single row.

Type=Int, Required

outer_connection_flex_body

The connection flex body to the outer ring part.

Type=Reference (FlexBody)

outer_connection_flex_node

The connection flex node to the outer ring part.

Type=Int

outer_connection_part

The Part that is connected to the outer ring.

See Comment 1.

Type=Reference (Part)

outer_density

The outer ring density. Default value calculated in [kg/mm^3].

Type=Double

outer_diameter

The outer diameter of the bearing.

Type=Double, Required

outer_shoulder_diameter

The shoulder diameter of the outer ring.

Type=Double

output_rm

The Marker in which the results are written.

Type=Reference (Marker)

pitch_diameter

The pitch diameter of the bearing.

Type=Double, Required

rm

The reference marker of the composite element.

Type=Reference (Marker), Required

roller_density

The rolling elements density. Cage part mass/inertia properties are calculated from rolling elements.

Type=Double

roller_diameter

The roller diameter of the bearing.

Type=Double, Required

roller_length

The length of the rolling elements.

Type=Double, Required

roller_pass_frequency

A flag that defines that the rollers are rotated by the roller pass frequency in the theoretical force calculation.

Type=Bool, Default=True

rollers_force_graphics

A flag that generates force vectors graphics on the rolling elements.

Type=Bool, Default=False

simplified_graphics

A flag that activates simplified graphic representation of the bearing.

Type=Bool, Default=False

transition_velocity

The angular velocity which defines the transition phase of the friction torque. Measured in [rad/sec].

Type=Double, Default=0.1

vec_gra_scale

A scale that defines the size of the output rollers force graphics.

For default value 1.0, the vector length will be 3 * pitch_diameter,when the displacement of the bearing is 0.01 * roller_diameter.

Type=Double, Default=1.0

width

The width of the bearing.

Type=Double, Required

class DeepGrooveBallBearing(**kwds)

Creates an analytical bearing that overtakes the radial and axial loads in both directions.

The bearing is defined by the following dimensions:

Deep Groove Ball Bearing Geometry.

Name	Type	Symbol	Required	Default	Modifiable
active	Bool			True	\(\checkmark\)
bearing_clearance	Double			0.0
bearing_density	Double
contact_angle	Double	\(a0\)		0.0
damping_force	Bool			True
damping_ratio	Double			0.1
external_connection	Bool			False
friction_torque	Bool			False
id	Int			Auto
inner_connection_flex_body	Reference - FlexBody
inner_connection_flex_node	Int
inner_connection_part	Reference - Part
inner_density	Double
inner_diameter	Double	\(d\)	\(\checkmark\)
inner_race_conformity	Double			0.52
inner_shoulder_diameter	Double
label	Str
lubricant_viscosity	Double			0.0
lubrication_method	Enum			grease
na	Int			60
name	Str
nc	Int			6
no	Int			2
number_of_rollers	Int		\(\checkmark\)
outer_connection_flex_body	Reference - FlexBody
outer_connection_flex_node	Int
outer_connection_part	Reference - Part
outer_density	Double
outer_diameter	Double	\(D\)	\(\checkmark\)
outer_race_conformity	Double			0.53
outer_shoulder_diameter	Double
output_rm	Reference - Marker
pitch_diameter	Double	\(dp\)	\(\checkmark\)
poisson_ratio	Double
rm	Reference - Marker		\(\checkmark\)
roller_density	Double
roller_diameter	Double	\(dr\)	\(\checkmark\)
roller_pass_frequency	Bool			True
rollers_force_graphics	Bool			False
simplified_graphics	Bool			False
static_load_rating	Double			0.0
transition_velocity	Double			0.1
vec_gra_scale	Double			1.0
width	Double	\(b\)	\(\checkmark\)
young_modulus	Double

active

Defines the state of the object.

Type=Bool, Default=True, Modifiable

bearing_clearance

The bearing clearance of the bearing.

Type=Double, Default=0.0

bearing_density

The bearing elements density.

See Comment 2.

Type=Double

contact_angle

The contact angle of the bearing.

Type=Double, Default=0.0

damping_force

A flag that activates damping force.

Type=Bool, Default=True

damping_ratio

The damping factor of the bearing. Used only when damping_force flag is True.

Type=Double, Default=0.1

external_connection

A flag that allows to apply external connection to ring parts. The validation is ignored when this flag is activated.

Type=Bool, Default=False

friction_torque

A flag that activates friction torque.

Type=Bool, Default=False

id

The id of the object.

Type=Int

inner_connection_flex_body

The connection flex body to the inner ring part.

Type=Reference (FlexBody)

inner_connection_flex_node

The connection flex node to the inner ring part.

Type=Int

inner_connection_part

The Part that is connected to the inner ring.

See Comment 1.

Type=Reference (Part)

inner_density

The inner ring density. Default value calculated in [kg/mm^3].

Type=Double

inner_diameter

The inner diameter of the bearing.

Type=Double, Required

inner_race_conformity

The inner race conformity (fi) expresses the relation between the rolling element diameter (dr) and the inner raceway groove radius (ri).

fi = ri/dr, 0.51 < fi < 0.54

Type=Double, Default=0.52

inner_shoulder_diameter

The inner shoulder diameter of the bearing.

Type=Double

label

The label of the composite element.

Type=Str

lubricant_viscosity

The viscosity of the bearing lubricant. Measured in [cSt]. Used only when friction_torque flag is True.

Type=Double, Default=0.0

lubrication_method

The lubrication method of the bearing. Used only when friction_torque flag is True.

Type=Enum, Default=grease

Permitted values are:

• grease

• oil_bath

• oil_jet

• oil_mist

na

Parameter that defines the number of nodes in the perimeter of rings graphics.

Type=Int, Default=60

name

Defines a nametag for the object.

Type=Str

nc

Parameter that defines the number of nodes in the raceway of rings graphics.

Type=Int, Default=6

no

Parameter that defines the number of nodes in the width of rings graphics.

Type=Int, Default=2

number_of_rollers

The number of rollers at the bearing in a single row.

Type=Int, Required

outer_connection_flex_body

The connection flex body to the outer ring part.

Type=Reference (FlexBody)

outer_connection_flex_node

The connection flex node to the outer ring part.

Type=Int

outer_connection_part

The Part that is connected to the outer ring.

See Comment 1.

Type=Reference (Part)

outer_density

The outer ring density. Default value calculated in [kg/mm^3].

Type=Double

outer_diameter

The outer diameter of the bearing.

Type=Double, Required

outer_race_conformity

The outer race conformity (fo) expresses the relation between the rolling element diameter (dr) and the outer raceway groove radius (ro).

fo = ro/dr, 0.51 < fo < 0.54

Type=Double, Default=0.53

outer_shoulder_diameter

The outer shoulder diameter of the bearing.

Type=Double

output_rm

The Marker in which the results are written.

Type=Reference (Marker)

pitch_diameter

The pitch diameter of the bearing.

Type=Double, Required

poisson_ratio

The poisson ratio of the bearing elements (rings and rollers).

See Comment 2.

Type=Double

rm

The reference marker of the composite element.

Type=Reference (Marker), Required

roller_density

The rolling elements density. Cage part mass/inertia properties are calculated from rolling elements.

Type=Double

roller_diameter

The roller diameter of the bearing.

Type=Double, Required

roller_pass_frequency

A flag that defines that the rollers are rotated by the roller pass frequency in the theoretical force calculation.

Type=Bool, Default=True

rollers_force_graphics

A flag that generates force vectors graphics on the rolling elements.

Type=Bool, Default=False

simplified_graphics

A flag that activates simplified graphic representation of the bearing.

Type=Bool, Default=False

static_load_rating

The static load rating of the bearing. Used only in friction torque calculation

Type=Double, Default=0.0

transition_velocity

The angular velocity which defines the transition phase of the friction torque. Measured in [rad/sec].

Type=Double, Default=0.1

vec_gra_scale

A scale that defines the size of the output rollers force graphics.

For default value 1.0, the vector length will be 3 * pitch_diameter,when the displacement of the bearing is 0.01 * roller_diameter.

Type=Double, Default=1.0

width

The width of the bearing.

Type=Double, Required

young_modulus

Young’s modulus of the bearing elements (rings and rollers). The default value is calculated in [N/mm^2].

See Comment 2.

Type=Double

class SphericalRollerBearing(**kwds)

Creates an analytical bearing that overtakes the radial and axial loads in both directions.

This bearing cannot overtake any tilting moments.

The bearing is defined by the following dimensions:

Spherical Roller Bearing Geometry.

Name	Type	Symbol	Required	Default	Modifiable
active	Bool			True	\(\checkmark\)
angular_offset	Double			0.0
bearing_clearance	Double			0.0
bearing_density	Double
calculation_factor_y0	Double			0.0
contact_angle	Double	\(a0\)		0.0
damping_force	Bool			True
damping_ratio	Double			0.1
external_connection	Bool			False
friction_torque	Bool			False
id	Int			Auto
inner_connection_flex_body	Reference - FlexBody
inner_connection_flex_node	Int
inner_connection_part	Reference - Part
inner_density	Double
inner_diameter	Double	\(d\)	\(\checkmark\)
inner_race_conformity	Double			0.52
inner_shoulder_diameter	Double
label	Str
lubricant_viscosity	Double			0.0
lubrication_method	Enum			grease
na	Int			60
name	Str
nc	Int			6
no	Int			2
number_of_rollers	Int		\(\checkmark\)
outer_connection_flex_body	Reference - FlexBody
outer_connection_flex_node	Int
outer_connection_part	Reference - Part
outer_density	Double
outer_diameter	Double	\(D\)	\(\checkmark\)
outer_race_conformity	Double			0.53
outer_shoulder_diameter	Double
output_rm	Reference - Marker
pitch_diameter	Double	\(dp\)	\(\checkmark\)
poisson_ratio	Double			0.3
rm	Reference - Marker		\(\checkmark\)
roller_contour_radius	Double	\(rs\)	\(\checkmark\)
roller_density	Double
roller_diameter	Double	\(dr\)	\(\checkmark\)
roller_length	Double	\(L\)	\(\checkmark\)
roller_pass_frequency	Bool			True
rollers_force_graphics	Bool			False
simplified_graphics	Bool			False
transition_velocity	Double			0.1
vec_gra_scale	Double			1.0
width	Double	\(b\)	\(\checkmark\)
young_modulus	Double			210000

active

Defines the state of the object.

Type=Bool, Default=True, Modifiable

angular_offset

This parameter specifies the angular offset between the two rows of the rolling elements. It is measure of asymmetry in SRBs.

Type=Double, Default=0.0

bearing_clearance

The bearing clearance of the bearing.

Type=Double, Default=0.0

bearing_density

The bearing elements density.

See Comment 2.

Type=Double

calculation_factor_y0

This parameter defines the calculation factor Y0 for the SRB, where:

\(P0 = Fr + Y0 · Fa\) is the basic static equivalent radial load.

Used only for the friction torque calculation.

Type=Double, Default=0.0

contact_angle

The contact angle of the bearing.

Type=Double, Default=0.0

damping_force

A flag that activates damping force.

Type=Bool, Default=True

damping_ratio

The damping factor of the bearing. Used only when damping_force flag is True.

Type=Double, Default=0.1

external_connection

A flag that allows to apply external connection to ring parts. The validation is ignored when this flag is activated.

Type=Bool, Default=False

friction_torque

A flag that activates friction torque.

Type=Bool, Default=False

id

The id of the object.

Type=Int

inner_connection_flex_body

The connection flex body to the inner ring part.

Type=Reference (FlexBody)

inner_connection_flex_node

The connection flex node to the inner ring part.

Type=Int

inner_connection_part

The Part that is connected to the inner ring.

See Comment 1.

Type=Reference (Part)

inner_density

The inner ring density. Default value calculated in [kg/mm^3].

Type=Double

inner_diameter

The inner diameter of the bearing.

Type=Double, Required

inner_race_conformity

The inner race conformity (fi) expresses the relation between the rolling element diameter (dr) and the inner raceway groove radius (ri).

fi = ri/dr, 0.51 < fi < 0.54

Type=Double, Default=0.52

inner_shoulder_diameter

The inner shoulder diameter of the bearing.

Type=Double

label

The label of the composite element.

Type=Str

lubricant_viscosity

The viscosity of the bearing lubricant. Measured in [cSt]. Used only when friction_torque flag is True.

Type=Double, Default=0.0

lubrication_method

The lubrication method of the bearing. Used only when friction_torque flag is True.

Type=Enum, Default=grease

Permitted values are:

• grease

• oil_bath

• oil_jet

• oil_mist

na

Parameter that defines the number of nodes in the perimeter of rings graphics.

Type=Int, Default=60

name

Defines a nametag for the object.

Type=Str

nc

Parameter that defines the number of nodes in the raceway of rings graphics.

Type=Int, Default=6

no

Parameter that defines the number of nodes in the width of rings graphics.

Type=Int, Default=2

number_of_rollers

The number of rollers at the bearing in a single row.

Type=Int, Required

outer_connection_flex_body

The connection flex body to the outer ring part.

Type=Reference (FlexBody)

outer_connection_flex_node

The connection flex node to the outer ring part.

Type=Int

outer_connection_part

The Part that is connected to the outer ring.

See Comment 1.

Type=Reference (Part)

outer_density

The outer ring density. Default value calculated in [kg/mm^3].

Type=Double

outer_diameter

The outer diameter of the bearing.

Type=Double, Required

outer_race_conformity

The outer race conformity (fo) expresses the relation between the rolling element diameter (dr) and the outer raceway groove radius (ro).

fo = ro/dr, 0.51 < fo < 0.54

Type=Double, Default=0.53

outer_shoulder_diameter

The inner shoulder diameter of the bearing.

Type=Double

output_rm

The Marker in which the results are written.

Type=Reference (Marker)

pitch_diameter

The pitch diameter of the bearing.

Type=Double, Required

poisson_ratio

The poisson ratio of the bearing elements (rings and rollers).

See Comment 2.

Type=Double, Default=0.3

rm

The reference marker of the composite element.

Type=Reference (Marker), Required

roller_contour_radius

The rolling element contour radius.

Type=Double, Required

roller_density

The rolling elements density. Cage part mass/inertia properties are calculated from rolling elements.

Type=Double

roller_diameter

The roller diameter of the bearing.

Type=Double, Required

roller_length

The length of the rolling elements.

Type=Double, Required

roller_pass_frequency

A flag that defines that the rollers are rotated by the roller pass frequency in the theoretical force calculation.

Type=Bool, Default=True

rollers_force_graphics

A flag that generates force vectors graphics on the rolling elements.

Type=Bool, Default=False

simplified_graphics

A flag that activates simplified graphic representation of the bearing.

Type=Bool, Default=False

transition_velocity

The angular velocity which defines the transition phase of the friction torque. Measured in [rad/sec].

Type=Double, Default=0.1

vec_gra_scale

A scale that defines the size of the output rollers force graphics.

For default value 1.0, the vector length will be 3 * pitch_diameter,when the displacement of the bearing is 0.01 * roller_diameter.

Type=Double, Default=1.0

width

The width of the bearing.

Type=Double, Required

young_modulus

The young modulus of the bearing elements (rings and rollers). The default value is calculated in [N/mm^2]

See Comment 2.

Type=Double, Default=210000

class TaperedRollerBearing(**kwds)

Creates an analytical bearing that overtakes the radial and axial loads in one direction.

The bearing is defined by the following dimensions:

Tapered Roller Bearing Geometry.

Name	Type	Symbol	Required	Default	Modifiable
active	Bool			True	\(\checkmark\)
bearing_clearance	Double			0.0
bearing_density	Double
bearing_k_factor	Double			0.0
contact_angle	Double	\(a0\)	\(\checkmark\)
damping_force	Bool			True
damping_ratio	Double			0.1
effective_roller_length	Double		\(\checkmark\)
external_connection	Bool			False
friction_torque	Bool			False
id	Int			Auto
inner_connection_flex_body	Reference - FlexBody
inner_connection_flex_node	Int
inner_connection_part	Reference - Part
inner_density	Double
inner_diameter	Double	\(d\)	\(\checkmark\)
inner_shoulder_diameter	Double
label	Str
lubricant_viscosity	Double			0.0
lubrication_method	Enum			grease
na	Int			60
name	Str
nc	Int			6
no	Int			2
number_of_rollers	Int		\(\checkmark\)
outer_connection_flex_body	Reference - FlexBody
outer_connection_flex_node	Int
outer_connection_part	Reference - Part
outer_density	Double
outer_diameter	Double	\(D\)	\(\checkmark\)
output_rm	Reference - Marker
pitch_diameter	Double	\(dp\)	\(\checkmark\)
rm	Reference - Marker		\(\checkmark\)
roller_density	Double
roller_diameter	Double	\(dr\)	\(\checkmark\)
roller_length	Double	\(L\)	\(\checkmark\)
roller_pass_frequency	Bool			True
rollers_force_graphics	Bool			False
simplified_graphics	Bool			False
transition_velocity	Double			0.1
vec_gra_scale	Double			1.0
width_a	Double	\(a\)
width_b	Double	\(b\)
width_c	Double	\(c\)
width_t	Double	\(t\)	\(\checkmark\)

active

Defines the state of the object.

Type=Bool, Default=True, Modifiable

bearing_clearance

The bearing clearance of the bearing.

Type=Double, Default=0.0

bearing_density

The bearing elements density.

See Comment 2.

Type=Double

bearing_k_factor

The ratio of basic dynamic thrust load rating and basic dynamic radial load rating (Y/X), where:

\(P = X · Fr + Y · Fa\) is the basic dynamic equivalent radial load.(example value X = 0.4, Y = 1.53, K = 3.825).

Used only for friction torque calculation.

Type=Double, Default=0.0

contact_angle

The contact angle of the bearing. Defined in degrees [deg].

Type=Double, Required

damping_force

A flag that activates damping force.

Type=Bool, Default=True

damping_ratio

The damping factor of the bearing. Used only when damping_force flag is True.

Type=Double, Default=0.1

effective_roller_length

The effective length of the rolling elements. Where the contact occurs.

Type=Double, Required

external_connection

A flag that allows to apply external connection to ring parts. The validation is ignored when this flag is activated.

Type=Bool, Default=False

friction_torque

A flag that activates friction torque.

Type=Bool, Default=False

id

The id of the object.

Type=Int

inner_connection_flex_body

The connection flex body to the inner ring part.

Type=Reference (FlexBody)

inner_connection_flex_node

The connection flex node to the inner ring part.

Type=Int

inner_connection_part

The Part that is connected to the inner ring.

See Comment 1.

Type=Reference (Part)

inner_density

The inner ring density. Default value calculated in [kg/mm^3].

Type=Double

inner_diameter

The inner diameter of the bearing.

Type=Double, Required

inner_shoulder_diameter

The shoulder diameter of the inner ring.

Type=Double

label

The label of the composite element.

Type=Str

lubricant_viscosity

The viscosity of the bearing lubricant. Measured in [cSt]. Used only when friction_torque flag is True.

Type=Double, Default=0.0

lubrication_method

The lubrication method of the bearing. Used only when friction_torque flag is True.

Type=Enum, Default=grease

Permitted values are:

• grease

• oil_bath

• oil_jet

• oil_mist

na

Parameter that defines the number of nodes in the perimeter of rings graphics.

Type=Int, Default=60

name

Defines a nametag for the object.

Type=Str

nc

Parameter that defines the number of nodes in the raceway of rings graphics.

Type=Int, Default=6

no

Parameter that defines the number of nodes in the width of rings graphics.

Type=Int, Default=2

number_of_rollers

The number of rollers at the bearing in a single row.

Type=Int, Required

outer_connection_flex_body

The connection flex body to the outer ring part.

Type=Reference (FlexBody)

outer_connection_flex_node

The connection flex node to the outer ring part.

Type=Int

outer_connection_part

The Part that is connected to the outer ring.

See Comment 1.

Type=Reference (Part)

outer_density

The outer ring density. Default value calculated in [kg/mm^3].

Type=Double

outer_diameter

The outer diameter of the bearing.

Type=Double, Required

output_rm

The Marker in which the results are written.

Type=Reference (Marker)

pitch_diameter

The pitch diameter of the bearing.

Type=Double, Required

rm

The reference marker of the composite element.

Type=Reference (Marker), Required

roller_density

The rolling elements density. Cage part mass/inertia properties are calculated from rolling elements.

Type=Double

roller_diameter

The roller diameter of the bearing.

Type=Double, Required

roller_length

The length of the rolling elements.

Type=Double, Required

roller_pass_frequency

A flag that defines that the rollers are rotated by the roller pass frequency in the theoretical force calculation.

Type=Bool, Default=True

rollers_force_graphics

A flag that generates force vectors graphics on the rolling elements.

Type=Bool, Default=False

simplified_graphics

A flag that activates simplified graphic representation of the bearing.

Type=Bool, Default=False

transition_velocity

The angular velocity which defines the transition phase of the friction torque. Measured in [rad/sec].

Type=Double, Default=0.1

vec_gra_scale

A scale that defines the size of the output rollers force graphics.

For default value 1.0, the vector length will be 3 * pitch_diameter,when the displacement of the bearing is 0.01 * roller_diameter.

Type=Double, Default=1.0

width_a

The pressure point distance.

Type=Double

width_b

The inner ring width.

Type=Double

width_c

The outer ring width.

Type=Double