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Gearbox
Realistic model of a gearbox
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Description
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This component models the essential effects of a gearbox, in particular, gear efficiency due to friction between the teeth and bearing friction in a Lossy Gear component; and gear elasticity, damping, and backlash in an ElastoBacklash component. The inertia of the gear wheels is not modeled.
The model consists of a Lossy Gear component connected in series to an ElastoBacklash component.
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Connections
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Name
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Description
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Modelica ID
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![flange[a]](/support/helpjp/helpview.aspx?si=3516/file08781/math50.png)
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Flange to driving shaft
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flange_a
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![flange[b]](/support/helpjp/helpview.aspx?si=3516/file08781/math60.png)
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Flange to driven shaft
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flange_b
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support
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Flange to the gearbox housing
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support
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Parameters
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Name
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Default
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Units
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Description
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Modelica ID
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r
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-
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-
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Transmission ratio 
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r
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Loss Table
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![[0, 1, 1, 0, 0]](/support/helpjp/helpview.aspx?si=3516/file08781/math126.png)
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-
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 matrix for mesh efficiencies and bearing friction depending on speed
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lossTable
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-
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Gear elasticity (spring constant)
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c
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-
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Relative gear damping
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d
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Total backlash
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b
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Initial Conditions
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Symbol
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Units
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Description
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Modelica ID
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![phi[rel0]](/support/helpjp/helpview.aspx?si=3516/file08781/math210.png)
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rad
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Relative rotational angle over gear elasticity
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phi_rel
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![omega[rel0]](/support/helpjp/helpview.aspx?si=3516/file08781/math223.png)
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Relative angular velocity over gear elasticity
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omega_rel
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See Also
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Bearings and Gears
1-D Mechanical Overview
The components described in this topic are from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.
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Download Help Document
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