ASTM A53 Gr.B Stress-Strain Curve

[GasGuy]

Does anyone have a typical stress-strain curve for ASTM A53 Gr.B carbon steel pipe? If not, something similar?

I would like it for a non-linear FEA model.

 

[whiteram]

Hi GasGuy,
Why not try the ASTM materials' specification handbook for a start or look up/get in touch with some manufacturers of the material on the net. Those might help

Goodluck.

whiteram.

 

[jte]

Why not just use an elastic-perfectly-plastic approach and use the Young's modulus at temperature for a bilinear stress-strain curve? Chances are it'll show that your subject piping is ok and it'll be a lot easier to model.

jt

 

[GasGuy]

By elastic-perfectly-plastic do you mean the stress strain curve would have astraight line up to the yield point and then a horizontal line from there on?

Wouldn't this be very conservative as the material will keep straining until the stress gets back below the yield stress?

 

[jte]

Yes, two straight lines. Yes, it is typically conservative. The material will yield locally thus distributing the load until equilibrium is reached. If this results in an acceptable answer, problem solved.

If not, you might want to consider strain hardening effects.

What type of piping configuration are you evaluating which would require a nonlinear analysis?

jt

 

[jte]

Ok, never mind the last question... Pretty clear in your other post.

jt