#1 2020-11-13 21:20:07

MrSnail

Member

Registered: 2018-10-26

Posts: 29

SSNP166: unreinforced concrete beam - with solids

Hi

I run a test of an unreinforced concrete beam with a notch in the middle. (same as SSNP166a, but with solid elements)
I made a bit of research and found the Load-Displacement curves for the real tests, and from the Abaqus validation benchmark.
It seems I am able to go very close to the original Load-Displacement curve, but only if I use a fake Gf value.
Originally it should be 0.124 Nmm / mm2 but it overestimates the peak and the softening as well.
I can have a good match with using a Gf = 0.025 value.
I do not want to make a more refined mesh since Abaqus works with that mesh, and the model runs a bit long.

I would like to ask what might be the reason behind that it is working only with Gf lower than the normal value?
Anybody any experience? Am I doing something in a wrong way?

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Attachments:
LoadDisplacement.png, Size: 24.75 KiB, Downloads: 30

MrSnail

Member

Registered: 2018-10-26

Posts: 29

Re: SSNP166: unreinforced concrete beam - with solids

And the model

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Attachments:
NotchedModel.hdf, Size: 1.17 MiB, Downloads: 25