Hinge Radau integration method

[oscom]

Hi everyone, I've been reading Professor's Scott research on this topic from 2006 research where this method had 4 integration points, to a modification of this method with 6 integration points later in 2015 and I have some questions

1) The 'HingeRadau' method is currently aplying the 4 or 6 integration points ?
2) I'm a bit new in the general finite element theory and I've not been able to find the explanation why 2 extra integration points were added in the inner (elastic) region of the beam and its locations. I'd be very thankfull if anyone can help me a bit with this.

Thank you.

[mhscott]

Here's a brief explanation:

https://portwooddigital.com/2019/10/12/ ... -interior/

[oscom]

Thank you very much Professor, and about the integration points, in OpenSeesPy documentation, it says 4 integration points are used (at the element ends and 8/3Lp inside), but I'm obtaining 6 Section moment-curvature relationships by using an element recorder, could you please confirm this and what the integration points locations and weights are?

Thank you.

[goraner]

Here's a brief explanation:

https://portwooddigital.com/2019/10/12/behind-the-elastic-interior/

Thanks for it!