how to set the parameters of Hyeteretic material?

CMPeng · Post by **CMPeng** » Thu Oct 18, 2007 5:40 am

I have checked the previous topic in the OpenSees Forum, but still need more help.

Questions about parameters of Hyeteretic material:damage1,damage2 and beta.

1 You suggested damage1=0.002,damage2=0.001,but it needs lots of trial work, and I still don't know what damage1 damage2 reallly mean.

2 Could you tell me the reasonable value for beta parameters and its real meaning.

3 Could I get the source code of Hysteretic material from you or others?

Thanks a lot !

silvia · Post by **silvia** » Thu Oct 18, 2007 7:50 am

the source code for opensees is available on-line all the time.
go to the opensees web page.
http://opensees.berkeley.edu/cgi-bin/cv ... nSees/SRC/

silvia · Post by **silvia** » Thu Oct 18, 2007 7:51 am

also,
timoshenk recommends a value of beta=0.5.

it is the slope of the unloading curve, dependent on the ductility level.