hello,
I have read the source code of steel02 of Opensees. I found that the stress shift equation in the source code seems not to be the same as the papers by Spacone and also Yasshin. Thank you very much!
Best regards!
Dear fmk,
I mean the /*stress shift part*/ introduced by Prof. Filippou. I checked the Report by Spacone and Dissertiation by Yassin. the stress shift equation seems simpler than the equation in the source code.