simulation- coupling dentate wheels

[ruggine]

Hello.

I wanted to use simulation to study a 2-stage reducer. the gears I designed them and are precise to the point that I can make them turn "by contact" with motion.

How can I bind wheels for finite element analysis?

 

[meccanicamg]

If you want to bind them for finite element analysis and already touch them correctly in the right contact point, there is nothing else to do. at the limit there will be the non-congruent mesh to activate to transfer the load to the contact zone. avoids the compnetrations as much as possible (categorically).

Try and then tell us.

 

[ruggine]

I tried but I can't, I applied a couple on one wheel and one resistant on the other but no tensions are created.

 

[meccanicamg]

Did you just bind the system? Are the forces the game right? Isn't it better to apply pairs, drive on the primary and an ink or torque resistant to conduct? Are the bodies in contact or not? verify that forces are transmitted by working on mesh on contact. if everything does not work you should make single fem on each wheel.

I saw the couples in the pdf but should test the model.

 

[Snake]

@meccanicamg: you could do using "motion" and then do "export data in simulation" ?
...I haven't been able to analyze gears yet but I would do so... maybe then I analyze acting in a single part environment by applying the force on the gear tooth. . .

I don't know, what do you say? Would a similar approach be wrong?

Thank you. :smile:

 

[meccanicamg]

@meccanicamg: you could do using "motion" and then do "export data in simulation" ?
...I haven't been able to analyze gears yet but I would do so... maybe then I analyze acting in a single part environment by applying the force on the gear tooth. . .

I don't know, what do you say? Would a similar approach be wrong?

Thank you. :smile:

Surely it can be a correct approach even if I want to remember that the cinematic parameters, pairs and powers in play are the theoretical ones calculated by hand because in the design they consider valid calculations with rhendard procedure supported by so much good theory. Blindly trusting a modeler and his calculation modules is the most wrong thing you can do.

 

[Ste_d]

@meccanicamg: you could do using "motion" maybe then analyze acting in a single part environment applying the force on the gear tooth. . .

I would do just like this, separate the wheels and on each one I would put the strength on the tooth... or a constraint on the tooth and a pair to the wheel.

 

[ruggine]

from the various tests that I have done, the only thing that has turned out really exhausting to me was to study every single wheel applying radial and tangential forces on the tooth (lewis method).