Peter, thank you so much.

Please correct me if I am wrong.

As we can see in Hooks diagram-dry max stress is 125 MPa and strain is 3 %, and in the properties of this material those stress - strain are breaking criteria for tem 23?

I am confused, I have some question. If anyone knows, please tell me.

1. Whether the force at max. stress 125 MPa and strain 3 % is max force that will occur on the construction for the material of the last post? And this point (125 MPa - 3 %) means the fracture point, the construction will break? In the example from the last post, the fracture force will be smaller than a force of 10,000 N, because this force creates a stress of 132 MPa and the fracture stress is 125.

2. From this link:

We can see the stress after max stress start to decrease and at elongation 40 % will occur fracture of the construction.

In the above link, the max force is 630 N and occurs at max. stress. I do not know how to analyze after max stress, from max stress to stress at fracture (40% elongation). In ansys I can input decreasing stress after max stress. Whether I can do this analysis in static or i must need another type of analysis.

Maybe for the fracture criteria I need to use elongation (40%) no stress criteria and assume that stress from max to stress at elongation 40% is constant?

The elongation of 40 %, how can I get it, will I use force higher than 630 N, for example 700N (assumption that at force of 700 N will occur the elongation of 40%). And that force of action (assumed force of 700N) not equal force of reaction (as we can se form the above video, the breaking force is about of 488 N). And can I say that breaking of the construction will occur at 700 but at 630 N the construction can be used in real life?

In The below link has one more example of tensile test.

https://www.admet.com/how-to-perform-an-astm-d638-plastic-tensile-strength-test/

If anyone want to help me that verify this analysis in the above link.

3. Can Hooks diagram use for all loads (bending) or it we can use only for tensile.

I am trying to do max. force for panel clips, but an analysis did not converge. I always have problems with non linear contact. I attached the archive file.

Thank in advance.

Best regards.