Curved beam stress calculation problem

[Aerstz]

Homework Statement

Calculate stress in a curved beam and compare with FEA model.

Homework Equations

Stress = (M*(r-rn))/(Aer)

The Attempt at a Solution

I used the above formula, which is repeated in many textbooks and reputable engineering websites, to calculate stress in a curved beam. My result was 9.5 MPa, but the FEA result was over 500 MPa (see attached image).

I've checked my calculations and I'm convinced I haven't made a mistake. I really do not know why there is such a large disagreement between my calculations and the FEA result. I have repeated the FEA process several times and in different ways but the disagreement is constant.

If anyone knows what is going wrong here please tell me!

 

[tehc21]

Hello Aertsz

I have a same problem with you.İn Curved Beams there is something I can not achieve.My Hand Calculation is 12 MPA My Ansys result is 400 MPA.If you found the reason or solution please share me?

My email: tehc21@gmail.com

 

[Nidum]

This is an old thread . Best to start a fresh one .

Please post full information about the problem in the new thread and show us your attempt at calculations .

 

[Nidum]

nb : Showing Email addresses openly on forum is not advisable . Delete yours asap .