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jiaru72300

stress concentration problem of contact

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Model description:

A set of gears

LoadTorque

Non-linear analysis conditions (NLSTAT)

There have contact between the gears (Slide)

 gears.png.efd6cf0826069f36919c7e9d9379e25f.png

 

Problem Description:

The ideal result should be that the largest stress is at the root of the tooth, but the analysis result is that the largest stress is at one point of the tooth surface.

This maybe stress concentration.

 

Is it a model problem? Or, if not, how to solve the stress concentration problem caused by this analysis.

 

When I look at the results at different times,

stress is still relatively uniform even at t=0.9, but stress concentration occurs at t=1.0.

Is the load equally divided?

 

The following pictures show the stress results

On the left is t=0.9. On the right is t=1.0.

 

sun_gear_stress.thumb.png.cdc45377c175803fe424c1f7a3dc87dd.png

planet_gear_stress.thumb.png.866fe340bc915ffb367c9d7af2b4ab1c.png

Ring_gear_stress.thumb.png.4ac07a4c3b696b90486397d14b782d65.png

 

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Hi @jiaru72300

 

Not sure what is the reason for that,

 

Is it possible to share the model file and .out file?

 

Please use the file transfer link in my signature to share the model file

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