Linear Static Analysis - Gear Strength

Altair Forum User

Hello Team, 

 

I am working on the Linear Static analysis of Gear tooth Bending strength check. 

 

Please see attached image of Analytical calculation and FEA Results. 

 

FEA results shows the stress 10 times higher than the Analytical Value. I have used default values of E, Nu and RHO for material and Applied force in N.

 

Please review and let me know where am I making mistake in Analysis. 

 

James

<?xml version="1.0" encoding="UTF-8"?>

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

Hi JamesMech,

 

I think the bending stress formula does not hold for linear static analysis.

 

Is it possible to share the model file with us?

Altair Forum User

Hi Prakash,

 

Could you please confirm if you have received the files .hm and .fem through file transfer?

 

James

Rahul Rajan_21763

Did you check the mass of gear tooth after assigning material property?Is is it same as real life component?

Altair Forum User

Hi, 

 

I received the files and working on it

Altair Forum User

Hi Rahul, 

 

Yes, I did check the mass and volume of the component. It is same as real life component. 

 

@Prakash Pagadala

Thanks for update. Will be waiting for your response /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

 

James

Altair Forum User

Hello Prakash @Prakash Pagadala

 

Any update on the files? Any comment?

 

Waiting for response

 

James

Altair Forum User

Hi @JamesMech

 

Here are few suggestions from one of our experts:

 

1) Refine the mesh and make sure you apply the force on entire top face of the gear

2) Atleast 4-5 layers of elements along the thickness of the tooth to capture proper stress

3) If the displacements are huge, try with NLSTAT