best constraint for an gear contact

Hello Everybody,

i need help from you guys because i don´t have that much experience. My question is very simple.

What is the best constraint for an gear contact without modeling an complex gear contact (for example using the Rigid-Elements)?

The FE-Simulation is also very simple. There is a torque which acts on a pipe. The reaction force comes from the gear contact. But i dont want to model that much gear contacts.

Thank you very much.

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