Analytical equations for Pinching4 material

[andrett7]

Dear all,

I'm interested in looking at the analytical equations which govern the change in state of the Pinching4 material. Where I can find it?

Thanks for the attention.

Andrea

[gor]

Andrea, I had the same question a while back. If you mean the pinching terms, they are pretty easy to figure out if you just play around with a single spring and change the terms ( what i did). But for the degradation terms, well, all the best with that because its not exactly to figure and the only info seems to be whats on the wiki or in the PEER report that it comes from. in bocca al lupo

[andrett7]

Hi Gor,

thanks for your replay. I will play a little bit.

Grazie mille

[gor]

If its any help, I posted a simple script a while back to do something like this for the Hysteretic material. Its nothing amazing but can save you a few minutes

http://opensees.berkeley.edu/community/ ... =2&t=62229

[andrett7]

Thank you, I'll check.

Andrea