Maximal Reduced Stress

[manan]

Hi,

I designed a shaft using the design accelerator, I got various stress values based on the inputs I provided, but I came across stress called Maximal Reduced Stress. I wanted to know what it means and how it affects design. Kindly support me with this

[jan.vonasek · Accepted solution]

Hi,

you can find exact formula here https://knowledge.autodesk.com/support/inventor/learn-explore/caas/CloudHelp/cloudhelp/2020/ENU/Inve...

Maximal Reduced Stress is combined stress from bending, torsion, shear and tension which has to be lower than allowable stress (reduced by safety factor).

[manan · Accepted solution]

Thank you for the reply I got my doughts cleared

[Anonymous]

What do you mean with the combination of all the stress? Do you mean the max stress in the shaft? How can I explain to someone what Inventor means with the maximal reduced stress?

Thanks

[jan.vonasek · Accepted solution]

Hi Jose,

Reduced stress is kind of sum of all stresses. For more details you may look for example here https://en.wikipedia.org/wiki/Von_Mises_yield_criterion.

[Anonymous]

Hi Jan

Thanks for you quick replay

so, reduce stress is the von misses theory of yield which means that reduce stress is the stress where the component can start to yield in any direction. 

right?

Regards

Jose

[jan.vonasek]

Hi Jose,

yes, it can be explained this way.

[Anonymous]

thanks