Backlash
The Backlash subnode is automatically added to a Gear Pair, Worm and Wheel, or Rack and Pinion node when Include backlash is selected under Gear Properties.
Backlash can only be specified on a gear pair in a time-dependent analysis.
Sketch
This section shows a sketch of the contact point of gear pair in the gear tooth normal plane. The sketch highlights the direction in which backlash is interpreted.
Backlash
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Enter Backlash bl.
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Enter Penalty factor pb. The default expression is ((1[1/ms])^2)*mbd.grp1.Ie. The exact naming of the variable depends on the tags of the nodes in the model tree.
Advanced
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Select Manual control on time stepping to restrict the maximum time step taken by the solver when there is finite penetration.
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Enter Maximum allowable time step Δtmax. The default expression is (pi/30)*(sqrt(mbd.grp1.Ie/mbd.grp1.pb). The exact naming of the variables depends on the tags of the nodes in the model tree.
Theory for Backlash
Location in User Interface
This node is automatically added when Include backlash is selected in the parent Gear Pair, Worm and Wheel, and Rack and Pinion nodes. It cannot be added or removed manually.