WOLFRAM SYSTEM MODELER
PinnedDriveEndComponent that can act as a pinned drive end to a beam, containing different options |
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Diagram
Wolfram Language
In[1]:=
SystemModel["RotatingMachinery.Supports.PinnedDriveEnd"]
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Information
Hinge Support - Pinned Drive End
This class contains components that act as support to a beam. Depending on the settings of the parameters, the support will act as pinned (hinged) or pinned-free (roller) support. The default setting is a pinned support with a locked position in the axial direction (z axis).
Figure 1: Pinned supports [1].
Preceding are two images showing the difference in setting the axialFixed = true (left) or false (right).
This component acts as the drive end because the condition between the initial revolute angle (revolute.phi) is set to fixed = true. In its counter-class, PinnedNonDriveEnd, the initial revolute angle is set to fixed = false. This means that the drive end will set the initial condition for the components connected to it, while the non-drive end will follow.
All models will need one or more supports. In this model, a pinned support is connected to a beam and can function as either a hinged or roller support depending on the parameter settings shown below.
Figure 2: Support parameters tab
By default, axialFixed is set to true, meaning that it will act as a pinned support with a fixed axial position. Note that it does not restrict rotational displacements. There are two other types of supports: fixed and flexible.
Parameters:
- useFlangeSupport = Set to true if the support should be connected to an external flange
- axialFixed = Set to true if the support should act as only a pinned support; set to false if the support should act as a pinned-free support. If set to true, the following parameters will be relevant:
- AxialPosition = Defines the axial position (z axis) of the fixed point the beam is connected to
- HorizontalPosition = Defines the horizontal position (x axis) of the fixed point the beam is connected to
- VerticalPosition = Defines the vertical position (y axis) of the fixed point the beam is connected to
- shaftConnection = Set to true if a rotating shaft flange should be connected to flange b
References
[1] Schmid, S. R., B. J. Hamrock and Bo. O. Jacobson. Fundamentals of Machine Elements. CRC Press, 2013.
Parameters (8)
| useFlangeSupport |
Value: false Type: Boolean Description: = true, if there is a need to connect to an external flange support |
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| axialFixed |
Value: true Type: Boolean Description: = true, if a fixed axial position in z direction should be set. To avoid built-in axial stresses, driving end should normally be fixed |
| shaftConnection |
Value: false Type: Boolean Description: = true, if a rotating shaft flange will be used. I.e. a connection to flange b |
| angle |
Value: 0 Type: Angle_deg (°) Description: Initial torsional rotation |
| torsionalDampingConstant |
Value: 0 Type: RotationalDampingConstant (N⋅m⋅s/rad) Description: Damping constant |
| axialPosition |
Value: 0 Type: Length (m) Description: Axial position, z direction |
| horisontalPosition |
Value: 0 Type: Length (m) Description: Horisontal position, x direction |
| verticalPosition |
Value: 0 Type: Length (m) Description: Vertical position, y direction |
Connectors (3)
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frame_b |
Type: Frame_b Description: Coordinate system fixed to the component with one cut-force and cut-torque (non-filled rectangular icon) |
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frame_to_support |
Type: Frame_b Description: Coordinate system fixed to the component with one cut-force and cut-torque (non-filled rectangular icon) |
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frame_shaftConnection |
Type: Frame_b Description: Coordinate system fixed to the component with one cut-force and cut-torque (non-filled rectangular icon) |
Components (7)
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revolute |
Type: Revolute Description: Revolute joint (1 rotational degree-of-freedom, 2 potential states, optional axis flange) |
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universal |
Type: Universal Description: Universal joint (2 degrees-of-freedom, 4 potential states) |
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fixedRotation |
Type: FixedRotation Description: Fixed translation followed by a fixed rotation of frame_b with respect to frame_a |
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damper |
Type: Damper Description: Linear 1D rotational damper |
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fixed1 |
Type: Fixed Description: Frame fixed in the world frame at a given position |
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prismatic |
Type: Prismatic Description: Prismatic joint (1 translational degree-of-freedom, 2 potential states, optional axis flange) |
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fixedRotationPrismatic |
Type: FixedRotation Description: Fixed translation followed by a fixed rotation of frame_b with respect to frame_a |
Used in Examples (9)
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RotatingMachinery.Examples.BearingAnalysis Two roller bearings on flexible supports |
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RotatingMachinery.Examples.BearingAnalysis Frequency analysis of a bearing defect on a simple shaft mounted on a structure |
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RotatingMachinery.Examples.Gears.SpurGears Building a two-wheeled gear train on shafts |
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RotatingMachinery.Examples.Gears.SpurGears Construction of triple gearbox on three shafts |
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RotatingMachinery.Examples.JeffcottRotorDamping Determine shaft damping |
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RotatingMachinery.Examples.JeffcottRotorDamping A basic Jeffcott rotor with internal and external damping |
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RotatingMachinery.Examples.RotorBalancing An unbalanced rotor stabilized by balancing planes |
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RotatingMachinery.Examples.Shafts Inspection of an axle's vibrations |
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RotatingMachinery.Examples.Shafts Inspection of a car axle deflection on tires |
Used in Components (1)
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RotatingMachinery.Gears.PlanetaryGears This component is a three-shaft gearbox and is a part of the wind turbine gearbox |