How to get a variable from Section class in a material Class

[linguan118]

Hi, fmk,
I've got a new 1d material that depends on the neutral axis position in the column section, i.e., stress=f(strain,d1/D), d1 is the depth of the neutral axis, D is the

column section (the envelope stress-strain curve of the new material varies to this variable).

I tried to modify the FiberSection2d Class. I added a variable of the position of the neutral axis of the section (Cdepth) in FiberSection2d Class. And inserted into

the function theMat->setTrial(strain, stress, tangent, Cdepth). Then in the materail, I modified the setTrialstrain and setTrial functions to include Cdepth. I then

built the Opensees.exe. But it failed! It seemed to tell me that i need to modify every setTrialstrain function in all materail Classes.

I don't know if there are other easy ways to achieve what i want. like, a global variable (Cdepth) which can be accessed in both Section and Material classes？

Thank you in advance!

[linguan118]

No one helps?

[fmk]

yes you would and that is not going to happen! i suggest you modify your material to get the na position from the section and put a method in the section class to return it. there may exist a global pointer to current SectionForceDefo, or we can put one in.