ABAQUS/Standard with UMAT: How to calculate HOURGLASS STIFFNESS for C3D8R?

[ShadowWarrior]

The analysis involves UMAT so HOURGLASS STIFFNESS parameter has to be specified in the input file -

http://50.16.225.63/v6.14/books/usb/default.htm?startat=pt06ch27s01aus113.html#d0e296981

Now, How do I calculate the HOURGLASS STIFFNESS parameter for C3D8R element? All I have is the value of E, v and plastic stress-strain curve.

Thanks for helping out.

 

[HHNL]

Hi ShadowWarrior,

you may have a look at the Abaqus documentation:

http://129.97.46.200:2080/v6.14/books/key/default.htm?startat=ch08abk05.html

You could also start some convergence studies in order to see the variation in the total energy (hourglass control energy is the term i believe) and see how it behaves also trying to vary the hourglass control in the element options.

Hope I could give you some small, useful hints.

Cheers,

Jousef

Cloud-based simulation in your browser:

https://www.simscale.com/

 

[ShadowWarrior]

Hi Jousef,

I have had a look at the link, but still need something step by step on how to calculate the Hourglass energy.

Hope somebody can help out.