Armin Abedini

Hi Javat,

Please note that stress concentration also depends on how the loading is applied (explained further in the video I sent you earlier). Depending on how you applied the load, that may also benefit from increasing the radius of sharp tips in a contact scenario, for example.
In some applications, it may not be possible to totally eliminate stress concentration, but it might be possible to "reduce" it. From your images, I can see that the peak stress level has been decreased by rounding the corner.